{ "version": "2.7.0", "generated": "2026-04-29T18:00:00Z", "source": "https://github.com/sunnyday-technologies/M3-CRETE", "parts": [ { "id": 5, "category": "Frame Hardware & Brackets", "name": "Straight Line Internal Connectors (20-Series)", "description": "In-slot connector bars for modular X-direction 2m members. M3-2 uses 3 butt joints x 4 connector bars per joint = 12 total. Bars fit inside the top and bottom V-slots across each joint and clamp with two set screws on either side. These are alignment aids, not the primary stiffness or centering method: SN 001 can flex this joint under gravity with connector bars alone. Each 2m X-direction splice is therefore centered and reinforced by a 1000mm 2040 insert friction-fit inside the 4080 C-Beam and held with printed retainers (id 65/id 85). The 2040 insert also avoids relying on steel set screws as the primary centering feature, reducing galvanic-corrosion concern at the joint. Stagger splice locations across parallel rails to avoid aligned weak planes. For M3-1: qty 0.", "qty": 12, "unit": "pieces", "mfg_type": "buy", "sort_order": 15, "mpn": null, "substitute_ok": true, "exclude_from_kit": true, "suppliers": [ { "id": 14, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "20-series straight line connector bar, 100mm, with M5 set screws. Alignment aid only; 2040 insert provides primary centering/stiffness.", "sku": null, "step_url": null, "approved": true }, { "id": 15, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "2020/20-series straight connector bar. Use 4 per 2m X-direction joint.", "sku": null, "step_url": null, "approved": true }, { "id": 16, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "20-series internal connector bar. Use 4 per 2m X-direction joint.", "sku": null, "step_url": null, "approved": true }, { "id": 1300, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/joining-strip/", "notes": "Internal connector bars, 20-series compatible. Use 4 per 2m X-direction joint.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 6, "category": "Frame Hardware & Brackets", "name": "T-Slot Drop-In Nuts M5 (20-Series)", "description": "300 total — M5 is the standard fastener for 4080 C-beam (20-series compatible 6mm slot width). Spring-loaded drop-in style recommended for easier assembly. NOT M6 — M6 is for 40-series only.", "qty": 3, "unit": "packs of 100", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 17, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "M5 spring-loaded T-nut 20-series", "sku": null, "step_url": null, "approved": true }, { "id": 18, "supplier_name": "ZYLtech", "product_url": "https://www.zyltech.com/", "notes": "M5 T-nut for 2020/2040/2080", "sku": null, "step_url": null, "approved": true }, { "id": 19, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "M5 drop-in nut for 20mm T-slot", "sku": null, "step_url": null, "approved": true }, { "id": 20, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "M5 T-nut 100-pack (20-series 6mm slot)", "sku": null, "step_url": null, "approved": true }, { "id": 1301, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/tee-nuts/", "notes": "M5 drop-in T-nuts, 20-series", "sku": null, "step_url": null, "approved": true }, { "id": 1304, "supplier_name": "JLCMC", "product_url": "https://jlcmc.com/product/s/T02/TPAA/m3-m4-m5-t-nut-20-series-aluminum-profile-fasteners", "notes": "M3/M4/M5 T-nut for 20-series aluminum profile (6mm slot) — same SKU family covers M3 and M4 as well", "sku": null, "step_url": null, "approved": true } ] }, { "id": 7, "category": "Frame Hardware & Brackets", "name": "Eccentric Spacers (V-Slot)", "description": "One per wheel, all 32 positions (2026-04-23: eccentric on every wheel for maximum preload adjustability on prototype). 6mm tall, 10mm OD, 6mm bore, off-center. Adds 6mm of axial offset along the bolt axis only — zero protrusion in the travel direction. Stack per wheel: M5 bolt -> plate -> eccentric spacer (6mm) -> V-wheel -> 6mm plain spacer (id 83) -> washer -> lock nut. NOTE: check all wheels for inner bearing spacer between the two 625ZZ races — missing inner spacer causes axial wheel slop.", "qty": 32, "unit": "pieces", "mfg_type": "buy", "sort_order": 25, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 21, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "Eccentric spacer for V-Slot (6mm bore, 10mm OD)", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Hardware/Eccentric Spacer 6mm.step", "approved": true }, { "id": 22, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "Eccentric spacer — precision ground", "sku": null, "step_url": null, "approved": true }, { "id": 23, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/Eccentric-Spacers-Full-Size-Wheels/dp/B01D2FAV44", "notes": "V-Slot eccentric spacer 10-pack", "sku": "B01D2FAV44", "step_url": null, "approved": true } ] }, { "id": 8, "category": "Frame Hardware & Brackets", "name": "Adjustable Leveling Feet M16", "description": "Critical for leveling on uneven job-site floors. 1000lb-rated per foot. NOTE: M16 thread will not fit directly into 4080 C-beam slot — requires printed or CNC base plates to interface with frame.", "qty": 4, "unit": "pieces", "mfg_type": "buy", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 24, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Heavy duty 1000lb swivel leveling foot", "sku": null, "step_url": null, "approved": true }, { "id": 25, "supplier_name": "Grainger", "product_url": "https://grainger.com", "notes": "Vibration dampening leveling mount", "sku": null, "step_url": null, "approved": true }, { "id": 26, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Standard M16 leveling foot", "sku": null, "step_url": null, "approved": true } ] }, { "id": 9, "category": "X-Axis Motion System", "name": "NEMA23 Stepper Motor (X-axis, 8mm shaft)", "description": "MUST be 8mm shaft variant to match pulleys and couplers. TMC5160 StallGuard for sensorless homing. 3Nm minimum torque recommended.", "qty": 1, "unit": "motor", "mfg_type": "buy", "sort_order": 10, "mpn": "23HS45-4204S1", "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 28, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "NEMA23 4.5Nm High Torque 8mm shaft", "sku": null, "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 29, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "NEMA23 3Nm — verify 8mm shaft", "sku": null, "step_url": null, "approved": true }, { "id": 27, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com/nema-23-bipolar-3nm-425oz-in-8mm-diameter-4-2a-57x57x113mm-4-wires-stepper-motor-23hs45-4204s1", "notes": "NEMA23 3Nm 8mm shaft", "sku": "23HS45-4204S1", "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 191, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/STEPPERONLINE-Stepper-Bipolar-57x57x113mm-Engraving/dp/B0CG58KY17", "notes": "STEPPERONLINE 23HS45-4204S1 3Nm 4.2A 8mm shaft", "sku": "B0CG58KY17", "step_url": null, "approved": true } ] }, { "id": 10, "category": "X-Axis Motion System", "name": "GT2 Timing Belt 10mm (Y-axis, 2x ~2.5m loops)", "description": "Y-axis motion belts, 10mm reinforced GT2", "qty": 2, "unit": "meters", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 30, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Gates PowerGrip GT2 10mm", "sku": null, "step_url": "https://www.gates.com/us/en", "approved": true }, { "id": 31, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Fiberglass core GT2 10mm", "sku": null, "step_url": null, "approved": true }, { "id": 32, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "Standard rubber GT2 10mm", "sku": null, "step_url": null, "approved": true } ] }, { "id": 11, "category": "X-Axis Motion System", "name": "GT2 Pulley 20-Tooth (8mm Bore, all axes)", "description": "Drive and idler pulleys — MUST match motor shaft diameter (8mm). Metal recommended for belt tooth engagement under load. Aluminum or steel.", "qty": 7, "unit": "pulleys", "mfg_type": "buy", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 33, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "Aluminum 20T 8mm bore GT2", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Pulleys/GT2 Timing Pulley 20 Tooth.step", "approved": true }, { "id": 34, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Steel 20T 8mm bore GT2", "sku": null, "step_url": null, "approved": true }, { "id": 35, "supplier_name": "ZYLtech", "product_url": "https://www.zyltech.com/", "notes": "GT2 20T pulley — 5mm/6.35mm/8mm bore options", "sku": null, "step_url": null, "approved": true }, { "id": 187, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/BEMONOC-2GT-Timing-Pulley-printer/dp/B01CL24CAI", "notes": "BEMONOC 5-pack GT2 20T 8mm bore 10mm width", "sku": "B01CL24CAI", "step_url": null, "approved": true }, { "id": 1302, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/gt2-pulley/", "notes": "GT2 20-tooth pulley, 8mm bore", "sku": null, "step_url": null, "approved": true } ] }, { "id": 13, "category": "X-Axis Motion System", "name": "X-Axis Carriage Plate Assembly", "description": "Carries the 1.5kg printhead. Print saves $70+ with CF-Nylon/ABS. Must be compatible with 4080 C-beam rail width. Hose is counter-weighted to reduce gantry loading.", "qty": 1, "unit": "assembly", "mfg_type": "print", "sort_order": 50, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 39, "supplier_name": "Local CNC Shop", "product_url": "", "notes": "CNC Aluminum 6061 6mm", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Plates/V-Slot Gantry Plate 20-80mm.step", "approved": true }, { "id": 40, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D Printed Carbon Fiber Nylon", "sku": null, "step_url": null, "approved": true }, { "id": 194, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/vs80-1/", "notes": "V-Slot Gantry Bundle Universal 20-80mm", "sku": null, "step_url": null, "approved": true }, { "id": 195, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/v-slot-gantry-bundle-2/", "notes": "V-Slot Gantry Bundle - ships from US warehouse", "sku": null, "step_url": null, "approved": true } ] }, { "id": 14, "category": "Dual Y-Axis Motion System", "name": "NEMA23 Stepper Motor (Y-axis, 8mm shaft)", "description": "Dual motors for anti-racking — TMC5160 StallGuard compatible. MUST be 8mm shaft variant. Both Y motors must be identical model for matched steps/mm.", "qty": 2, "unit": "motors", "mfg_type": "buy", "sort_order": 10, "mpn": "23HS45-4204S1", "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 43, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "NEMA23 4.5Nm High Torque 8mm shaft", "sku": null, "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 44, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "NEMA23 3Nm — verify 8mm shaft", "sku": null, "step_url": null, "approved": true }, { "id": 42, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com/nema-23-bipolar-3nm-425oz-in-8mm-diameter-4-2a-57x57x113mm-4-wires-stepper-motor-23hs45-4204s1", "notes": "NEMA23 3Nm 8mm shaft", "sku": "23HS45-4204S1", "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 192, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/STEPPERONLINE-Stepper-Bipolar-57x57x113mm-Engraving/dp/B0CG58KY17", "notes": "STEPPERONLINE 23HS45-4204S1 3Nm 4.2A 8mm shaft", "sku": "B0CG58KY17", "step_url": null, "approved": true } ] }, { "id": 15, "category": "X-Axis Motion System", "name": "GT2 Timing Belt 6mm (X-axis, 1x ~2.4m fixed strand)", "description": "X-axis belt-pinion drive. Uses 6mm GT2 because the X belt must fit inside the gantry slot; do not substitute the 10mm belt used on Y/Z here.", "qty": 1, "unit": "meters", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 45, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Source 6mm GT2 for X-axis only; 10mm stock is for Y/Z belts.", "sku": null, "step_url": null, "approved": true }, { "id": 46, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Source 6mm GT2 for X-axis only; 10mm stock is for Y/Z belts.", "sku": null, "step_url": null, "approved": true }, { "id": 47, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "Source 6mm GT2 for X-axis only; 10mm stock is for Y/Z belts.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 17, "category": "Dual Y-Axis Motion System", "name": "V-Groove Wheels (Polycarbonate)", "description": "32 total confirmed from SN 001 physical assembly (2026-04-23). Breakdown: Z 4x4=16 + Y 2x4=8 + X double-plate 2x4=8. Polycarbonate (Xtreme/Solid) for heavy gantry loads.", "qty": 32, "unit": "wheels", "mfg_type": "buy", "sort_order": 40, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 52, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "Solid V-Wheel polycarbonate", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Wheels/Xtreme Solid V Wheel.step", "approved": true }, { "id": 53, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "V-Slot V-Wheel kit with bearings", "sku": null, "step_url": null, "approved": true }, { "id": 51, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/vk0012/", "notes": "Xtreme Solid V-Wheel", "sku": "VW02-RS", "step_url": null, "approved": true } ] }, { "id": 18, "category": "Dual Y-Axis Motion System", "name": "Y-Axis Gantry Plates", "description": "Connects gantry beam to Y-rail carriages. Current design target is the same 125x125mm C-Beam gantry plate geometry used across Y/Z/X where practical; 3D-print prototype allowed. Common plate standard reduces SKU count and supports component swaps.", "qty": 2, "unit": "plates", "mfg_type": "print", "sort_order": 50, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 54, "supplier_name": "Local CNC Shop", "product_url": "", "notes": "CNC Aluminum 8mm", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Plates/V-Slot Gantry Plate 20-80mm.step", "approved": true }, { "id": 55, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D Printed CF-Nylon Reinforced", "sku": null, "step_url": null, "approved": true }, { "id": 196, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/vs80-1/", "notes": "V-Slot Gantry Bundle Universal 20-80mm", "sku": null, "step_url": null, "approved": true }, { "id": 197, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/v-slot-gantry-bundle-2/", "notes": "V-Slot Gantry Bundle - ships from US warehouse", "sku": null, "step_url": null, "approved": true } ] }, { "id": 19, "category": "Quad Z-Axis System (Self-Tramming)", "name": "NEMA23 Stepper Motor (Z-axis, 8mm shaft)", "description": "Four independent motors for auto-tramming via Klipper Z_TILT_ADJUST. 8mm shaft to match pulleys. Belt-driven Z — same motor type as X/Y for full parts commonality.", "qty": 4, "unit": "motors", "mfg_type": "buy", "sort_order": 10, "mpn": "23HS45-4204S1", "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 58, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "NEMA23 4.5Nm High Torque 8mm shaft", "sku": null, "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 59, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "NEMA23 3Nm — verify 8mm shaft", "sku": null, "step_url": null, "approved": true }, { "id": 57, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com/nema-23-bipolar-3nm-425oz-in-8mm-diameter-4-2a-57x57x113mm-4-wires-stepper-motor-23hs45-4204s1", "notes": "NEMA23 3Nm 8mm shaft", "sku": "23HS45-4204S1", "step_url": "https://www.omc-stepperonline.com/download", "approved": true }, { "id": 193, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/STEPPERONLINE-Stepper-Bipolar-57x57x113mm-Engraving/dp/B0CG58KY17", "notes": "STEPPERONLINE 23HS45-4204S1 3Nm 4.2A 8mm shaft", "sku": "B0CG58KY17", "step_url": null, "approved": true } ] }, { "id": 20, "category": "Quad Z-Axis System (Self-Tramming)", "name": "GT2 Timing Belt 10mm (Z-axis, 4x ~2.5m loops)", "description": "Belt-driven Z - same GT2 10mm belt as Y-axis; X-axis remains 6mm to fit the gantry slot. ~3m per Z corner (up + down run + tensioner), 12m total for 4 independent Z drives. Belts shed concrete splatters unlike lead screw threads.", "qty": 4, "unit": "meters", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 60, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Gates PowerGrip GT2 10mm - same as Y; X uses 6mm.", "sku": null, "step_url": null, "approved": true }, { "id": 61, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Fiberglass core GT2 10mm", "sku": null, "step_url": null, "approved": true }, { "id": 62, "supplier_name": "StepperOnline US", "product_url": "https://www.omc-stepperonline.com", "notes": "Standard rubber GT2 10mm", "sku": null, "step_url": null, "approved": true } ] }, { "id": 23, "category": "Quad Z-Axis System (Self-Tramming)", "name": "Z-Axis Carriage Plates", "description": "Connects gantry frame to V-wheel carriages on vertical posts. 4 plates (one per corner). Current design target is the same 125x125mm C-Beam gantry plate geometry used across Y/Z/X where practical; must mount V-wheels + belt clamp.", "qty": 4, "unit": "plates", "mfg_type": "print", "sort_order": 50, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 69, "supplier_name": "Local CNC Shop", "product_url": "", "notes": "CNC Aluminum 6mm", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Plates/V-Slot Gantry Plate 20-80mm.step", "approved": true }, { "id": 70, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D Printed CF-Nylon Reinforced", "sku": null, "step_url": null, "approved": true }, { "id": 198, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/vs80-1/", "notes": "V-Slot Gantry Bundle Universal 20-80mm", "sku": null, "step_url": null, "approved": true }, { "id": 199, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/v-slot-gantry-bundle-2/", "notes": "V-Slot Gantry Bundle - ships from US warehouse", "sku": null, "step_url": null, "approved": true } ] }, { "id": 24, "category": "Quad Z-Axis System (Self-Tramming)", "name": "Z-Axis Motor Mounts (integrated 3D-printed corner brackets)", "description": "No purchased Z motor brackets in the current reference design. Z motor mounting is integrated into the printed combined corner bracket/post cap/spacer with belt clearance (see id 75). Print in PETG for prototype or CCF for production.", "qty": 4, "unit": "mounts", "mfg_type": "print", "sort_order": 60, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 72, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "Print as part of the combined corner bracket. Do not purchase metal NEMA23 L-brackets for SN 001.", "sku": null, "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Custom/Corner_Bracket_Combined.step", "approved": true }, { "id": 73, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/s?k=NEMA+23+L+bracket+stepper", "notes": "Legacy reference only; current design prints the mounts.", "sku": null, "step_url": null, "approved": false }, { "id": 1303, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/nema23-bracket/", "notes": "Legacy reference only; current design prints the mounts.", "sku": null, "step_url": null, "approved": false } ] }, { "id": 25, "category": "Electronics & Control System", "name": "BTT Kraken Mainboard", "description": "8 stepper drivers (TMC5160) — perfect for this build: X + 2×Y + 4×Z + Extruder. StallGuard sensorless homing on all axes.", "qty": 1, "unit": "board", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 75, "supplier_name": "Filastruder", "product_url": "https://www.filastruder.com", "notes": "BTT Kraken v1.0", "sku": null, "step_url": "https://github.com/bigtreetech/Kraken/tree/master/Hardware", "approved": true }, { "id": 77, "supplier_name": "Filastruder", "product_url": "https://www.filastruder.com", "notes": "BTT Octopus Pro (alt)", "sku": null, "step_url": "https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-Pro", "approved": true }, { "id": 76, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/BIGTREETECH-Control-Onboard-8%C3%97TMC2160-High-Performance/dp/B0CQX9XJ4W", "notes": "BTT Kraken", "sku": "B0CQX9XJ4W", "step_url": null, "approved": true } ] }, { "id": 26, "category": "Electronics & Control System", "name": "Raspberry Pi 5 (8GB RAM)", "description": "Runs Klipper firmware. 8GB recommended for large print files.", "qty": 1, "unit": "computer", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 78, "supplier_name": "Adafruit", "product_url": "https://www.adafruit.com", "notes": "RPi 5 8GB", "sku": null, "step_url": null, "approved": true }, { "id": 80, "supplier_name": "Adafruit", "product_url": "https://www.adafruit.com", "notes": "RPi 4 8GB (alt)", "sku": null, "step_url": null, "approved": true }, { "id": 79, "supplier_name": "Amazon - CanaKit", "product_url": "https://www.amazon.com/Raspberry-Pi-8GB-SC1112-Quad-core/dp/B0CK2FCG1K", "notes": "RPi 5 8GB Kit", "sku": "B0CK2FCG1K", "step_url": null, "approved": true } ] }, { "id": 27, "category": "Electronics & Control System", "name": "7-inch Touchscreen Display", "description": "User interface for printer control via KlipperScreen.", "qty": 1, "unit": "display", "mfg_type": "buy", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 81, "supplier_name": "Adafruit", "product_url": "https://www.adafruit.com", "notes": "Raspberry Pi 7\" Official", "sku": null, "step_url": null, "approved": true }, { "id": 82, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Waveshare 7\" HDMI", "sku": null, "step_url": null, "approved": true }, { "id": 83, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Generic 7\" capacitive touch", "sku": null, "step_url": null, "approved": true } ] }, { "id": 28, "category": "Electronics & Control System", "name": "Power Supply 24V 600W", "description": "MeanWell for reliability. 600W handles 7 NEMA23 steppers + accessories. 24V bus for Kraken + peripherals.", "qty": 1, "unit": "PSU", "mfg_type": "buy", "sort_order": 40, "mpn": "LRS-600-24", "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 86, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Generic 24V 600W", "sku": null, "step_url": null, "approved": true }, { "id": 85, "supplier_name": "Digi-Key", "product_url": "https://www.digikey.com/en/products/detail/mean-well-usa-inc/LRS-600-24/16394242", "notes": "MeanWell RSP-750-24", "sku": "1866-LRS-600-24-ND", "step_url": null, "approved": true }, { "id": 84, "supplier_name": "Mouser Electronics", "product_url": "https://www.mouser.com/ProductDetail/MEAN-WELL/LRS-600-24", "notes": "MeanWell LRS-600-24", "sku": "709-LRS-600-24", "step_url": null, "approved": true } ] }, { "id": 29, "category": "Electronics & Control System", "name": "Emergency Stop Button", "description": "Critical safety component. NC (normally-closed) contacts — pressing opens the circuit and kills 24V via contactor.", "qty": 1, "unit": "switch", "mfg_type": "buy", "sort_order": 50, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 87, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Mushroom E-stop NC", "sku": null, "step_url": null, "approved": true }, { "id": 88, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "Twist-release E-stop NC", "sku": null, "step_url": null, "approved": true }, { "id": 89, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Panel mount E-stop NC", "sku": null, "step_url": null, "approved": true } ] }, { "id": 30, "category": "Electronics & Control System", "name": "Cable Drag Chain (Sealed)", "description": "Enclosed/sealed type for concrete dust protection. X-axis: 25x50mm ID, 2.5m (M3-2 travel). Y-axis: 25x38mm ID, 1.3m. Open-style chains will clog with concrete dust. igus E2 micro series is ideal for dusty environments.", "qty": 4, "unit": "meters total (X: 2.5m + Y: 1.3m)", "mfg_type": "buy", "sort_order": 80, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 90, "supplier_name": "igus", "product_url": "https://www.igus.com", "notes": "E2 micro sealed drag chain — premium, dust-proof", "sku": null, "step_url": "https://www.igus.com/", "approved": true }, { "id": 91, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Heavy duty sealed 35mm cable carrier", "sku": null, "step_url": null, "approved": true }, { "id": 92, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D Printed parametric sealed chain", "sku": null, "step_url": null, "approved": true }, { "id": 190, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/uxcell-Plastic-Cable-Carrier-Chain/dp/B01LXNJ7NI", "notes": "uxcell R55 25x50mm enclosed drag chain 1M", "sku": "B01LXNJ7NI", "step_url": null, "approved": true } ] }, { "id": 31, "category": "Electronics & Control System", "name": "Shielded Motor Cable - Flex-Rated (18AWG 4C)", "description": "4-conductor 18AWG, foil shield + drain, silicone jacket, continuous-flex drag-chain-rated. For X, Y, and extruder motors on moving axes. M3-2 X-axis travel requires ~2m more than M3-1. Critical for reliable StallGuard sensorless homing.", "qty": 20, "unit": "meters (1 spool)", "mfg_type": "buy", "sort_order": 100, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 93, "supplier_name": "igus", "product_url": "https://www.igus.com", "notes": "chainflex CF211 — premium drag-chain-rated", "sku": null, "step_url": null, "approved": true }, { "id": 94, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "18AWG 4C shielded silicone flex cable", "sku": null, "step_url": null, "approved": true }, { "id": 95, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Continuous-flex shielded cable", "sku": null, "step_url": null, "approved": true } ] }, { "id": 32, "category": "Electronics & Control System", "name": "Shielded Motor Cable - Static (18AWG 4C)", "description": "4-conductor 18AWG, foil shield + drain, PVC jacket, UL2464. For 4 stationary Z-axis motors. Shield drain connects at controller end only (star ground).", "qty": 10, "unit": "meters (1 spool)", "mfg_type": "buy", "sort_order": 110, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 96, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Alpha Wire or Belden UL2464 shielded 4C 18AWG", "sku": null, "step_url": null, "approved": true }, { "id": 97, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "18AWG 4C foil-shielded cable", "sku": null, "step_url": null, "approved": true }, { "id": 98, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Shielded multi-conductor cable", "sku": null, "step_url": null, "approved": true } ] }, { "id": 33, "category": "Electronics & Control System", "name": "GX16-4 Aviation Connector Sets", "description": "Quick-disconnect for all 8 stepper motors. IP65 when mated — critical for concrete dust protection. Panel-mount female + inline male per set. Apply dielectric grease at assembly.", "qty": 10, "unit": "sets (8 needed + 2 spare)", "mfg_type": "buy", "sort_order": 120, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 100, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Amphenol equivalent circular connectors", "sku": null, "step_url": null, "approved": true }, { "id": 99, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/Female-Connector-GX16-4-Silver-Aviation/dp/B07174LCGR", "notes": "GX16-4 male-inline + female-panel set", "sku": "B07174LCGR", "step_url": null, "approved": true } ] }, { "id": 34, "category": "Electronics & Control System", "name": "Power Wire — 12AWG Silicone (Red + Black)", "description": "PSU 24V output to BTT Kraken main power input. 12AWG handles 25A max draw at 600W/24V. Also used for E-stop contactor power loop.", "qty": 2, "unit": "meters each color (4m total)", "mfg_type": "buy", "sort_order": 130, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 101, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "12AWG silicone stranded wire (red + black)", "sku": null, "step_url": null, "approved": true }, { "id": 102, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "12AWG stranded hookup wire", "sku": null, "step_url": null, "approved": true } ] }, { "id": 35, "category": "Electronics & Control System", "name": "Distribution Wire — 18AWG (Red + Black)", "description": "24V branch distribution, accessory power, E-stop signal loop. For internal control panel wiring.", "qty": 6, "unit": "meters total (3m each color)", "mfg_type": "buy", "sort_order": 135, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 103, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "18AWG silicone hookup wire assortment", "sku": null, "step_url": null, "approved": true }, { "id": 104, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "18AWG stranded hookup wire", "sku": null, "step_url": null, "approved": true } ] }, { "id": 36, "category": "Electronics & Control System", "name": "Ferrule Crimping Tool + Assortment Kit", "description": "Every stranded wire into a screw terminal MUST have a ferrule — critical in high-vibration concrete printer. Expect to use ~100 ferrules.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 140, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 105, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/IWISS-Self-Adjusting-AWG23-10-End-Sleeves-Ferrule/dp/B00ODSJGSW", "notes": "IWISS or Wirefy ratcheting crimper + ferrule kit", "sku": "B00ODSJGSW", "step_url": null, "approved": true }, { "id": 106, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/IWISS-Crimper-Plier-Self-adjustable-Crimping/dp/B00H950AK4", "notes": "Preciva ferrule crimping set", "sku": "B00H950AK4", "step_url": null, "approved": true } ] }, { "id": 37, "category": "Electronics & Control System", "name": "IEC C14 Power Inlet w/ EMI Filter & Fuse", "description": "Panel-mount AC inlet with integrated EMI filter, fuse holder (6A slow-blow for 120V), and rocker switch. Single mains entry point.", "qty": 1, "unit": "unit", "mfg_type": "buy", "sort_order": 150, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 108, "supplier_name": "Mouser", "product_url": "https://mouser.com", "notes": "TE Connectivity Corcom series", "sku": null, "step_url": null, "approved": true }, { "id": 109, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "IEC C14 inlet fused + filtered", "sku": null, "step_url": null, "approved": true }, { "id": 107, "supplier_name": "Digi-Key", "product_url": "https://www.digikey.com/en/product-highlight/s/schaffner/fn9260-series-power-entry-modules", "notes": "Schaffner or Qualtek IEC inlet w/ filter", "sku": "FN9260-6-06", "step_url": null, "approved": true } ] }, { "id": 38, "category": "Electronics & Control System", "name": "24V Safety Contactor / Relay", "description": "E-stop cuts 24V power via this contactor. NC E-stop loop controls the coil. 30A contacts minimum for 600W PSU output.", "qty": 1, "unit": "unit", "mfg_type": "buy", "sort_order": 155, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 110, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Omron or Schneider 24VDC coil contactor", "sku": null, "step_url": null, "approved": true }, { "id": 111, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "IDEC or Fuji 24VDC relay", "sku": null, "step_url": null, "approved": true }, { "id": 112, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "24V DC coil contactor 30A+", "sku": null, "step_url": null, "approved": true } ] }, { "id": 39, "category": "Electronics & Control System", "name": "24V-to-5V DC-DC Buck Converter (5A)", "description": "Powers Raspberry Pi 5 and touchscreen from the 24V bus. RPi 5 draws up to 5A with peripherals. Use dedicated converter, NOT Kraken 5V output.", "qty": 1, "unit": "unit", "mfg_type": "buy", "sort_order": 160, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 113, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Pololu 5V 5A step-down regulator", "sku": null, "step_url": null, "approved": true }, { "id": 114, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Mean Well DDR-30G-5 DIN-rail mount", "sku": null, "step_url": null, "approved": true }, { "id": 115, "supplier_name": "Adafruit", "product_url": "https://www.adafruit.com", "notes": "5V 5A buck converter breakout", "sku": null, "step_url": null, "approved": true } ] }, { "id": 40, "category": "Electronics & Control System", "name": "DIN-Rail Terminal Block Kit + Rail", "description": "10-position terminal blocks, DIN-rail end clamps (plastic clips that hold terminal blocks in place — NOT motion endstops; M3-CRETE uses TMC5160 StallGuard sensorless homing), jumper bars, and 0.5m 35mm DIN rail. Star-ground bus bar for all shield drain wires.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 165, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 116, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Phoenix Contact UK series + rail", "sku": null, "step_url": null, "approved": true }, { "id": 117, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Dinkle DIN-rail terminal block kit", "sku": null, "step_url": null, "approved": true }, { "id": 118, "supplier_name": "AutomationDirect", "product_url": "https://automationdirect.com", "notes": "DINnector terminal block set", "sku": null, "step_url": null, "approved": true } ] }, { "id": 41, "category": "Electronics & Control System", "name": "Nylon Cable Gland Assortment", "description": "IP68 cable glands for every wire entering the control panel. Prevents concrete dust ingress. Mount on bottom/sides only. Sizes: PG7-PG13.5.", "qty": 1, "unit": "50-pack assorted", "mfg_type": "buy", "sort_order": 170, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 119, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Nylon cable gland assortment PG7-PG13.5", "sku": null, "step_url": null, "approved": true }, { "id": 120, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Strain relief cable glands", "sku": null, "step_url": null, "approved": true } ] }, { "id": 42, "category": "Electronics & Control System", "name": "Snap-On Ferrite Cores (13mm ID)", "description": "One per stepper motor cable at the controller end. Suppresses EMI that interferes with StallGuard sensorless homing.", "qty": 8, "unit": "pieces", "mfg_type": "buy", "sort_order": 175, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 122, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Fair-Rite or TDK snap ferrite", "sku": null, "step_url": null, "approved": true }, { "id": 121, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/Ferrite-Noise-Filter-Cable-3-5mm/dp/B01N0AV746", "notes": "Snap-on ferrite cores 13mm (8-pack)", "sku": "B01N0AV746", "step_url": null, "approved": true } ] }, { "id": 43, "category": "Electronics & Control System", "name": "Cable Sleeving, Labels & Tie Kit", "description": "10m PET braided sleeving (1/2\" + 1/4\"), 100x UV-resistant cable ties, 30x screw-mount bases, self-laminating wire labels. Label both ends: M1-X, M2-YL, M3-YR, M4-Z1..M7-Z4, M8-EXT.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 180, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 123, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "PET sleeving + cable tie + label bundle", "sku": null, "step_url": null, "approved": true }, { "id": 124, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Braided sleeving, nylon ties, markers", "sku": null, "step_url": null, "approved": true } ] }, { "id": 44, "category": "Concrete Extrusion System", "name": "Progressive Cavity Pump", "description": "REFERENCE ONLY — not included in M3-CRETE motion system kit. The concrete extrusion system operates at high pressure and requires commercial-grade components. Proven options include progressive cavity pump systems from established manufacturers. Contact Sunnyday Technologies for current recommendations.", "qty": 1, "unit": "pump", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": true, "exclude_from_kit": true, "suppliers": [ { "id": 125, "supplier_name": "MAI International (Austria)", "product_url": "https://mai.at/en/product-range/3d-printing/mai-2pump-pictor-3d/", "notes": "MAI 2PUMP PICTOR-3D — 0.7-15.5 L/min, grain up to 2mm, analog 0-10V control. Industry standard for research and startups.", "sku": null, "step_url": null, "approved": true }, { "id": 126, "supplier_name": "M-Tec (Germany)", "product_url": "https://m-tec.com/", "notes": "M-Tec P20 3DCP — 3-24 L/min, grain up to 4mm, Modbus-RTU control. Higher throughput for large-format printing.", "sku": null, "step_url": null, "approved": true }, { "id": 127, "supplier_name": "StoneFlower 3D (Germany)", "product_url": "https://www.stoneflower3d.com/store/concrete-3d-printer/", "notes": "Automated concrete pump — up to 10 L/min, 40 bar, aggregates up to 6mm. Includes operator training.", "sku": null, "step_url": null, "approved": true }, { "id": 128, "supplier_name": "Community Interest: US-Sourced Stepper Pump", "product_url": "", "notes": "INTEREST CHECK — stepper-driven PC pump using NEMA23 + external driver + Kraken stepper signal. Need 10 commitments for a small production batch.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 46, "category": "Concrete Extrusion System", "name": "External Stepper Driver — TMC5160 (48V High Current)", "description": "Drives geared pump motor via Kraken STEP/DIR/EN signals. External driver recommended: higher current (6A) and 48V for more torque. SPI enables StallGuard for material blockage alarm.", "qty": 1, "unit": "driver board", "mfg_type": "buy", "sort_order": 16, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 133, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "BIGTREETECH TMC5160T Pro V1.0 — 48V, SPI/UART.", "sku": null, "step_url": null, "approved": true }, { "id": 134, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Analog Devices TMC5160-BOB evaluation board.", "sku": null, "step_url": null, "approved": true }, { "id": 132, "supplier_name": "West3D (US)", "product_url": "https://west3d.com/products/tmc5160-pro-48v-stepper-motor-driver-drivers-btt", "notes": "BTT TMC5160 Pro V1.2 — 48V, external MOSFETs, SPI.", "sku": "TMC5160T-Pro-V1.2", "step_url": "https://github.com/bigtreetech/TMC5160T-Pro", "approved": true } ] }, { "id": 47, "category": "Concrete Extrusion System", "name": "Progressive Cavity Pump Element (Rotor + Stator)", "description": "Core pumping element — chrome-plated SS rotor inside elastomer stator. For mortar/concrete with aggregates up to 2-6mm. Stator: Buna Nitrile (NBR) for concrete, EPDM for alkaline. Expect stator replacement every 200-500 hours.", "qty": 1, "unit": "rotor + stator set", "mfg_type": "buy", "sort_order": 17, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 136, "supplier_name": "Progressive Cavity Parts (US)", "product_url": "https://www.progressivecavityparts.com/", "notes": "Aftermarket replacement rotors and stators for Moyno, Seepex, Netzsch, Continental.", "sku": null, "step_url": null, "approved": true }, { "id": 137, "supplier_name": "Seepex (via US distributors)", "product_url": "https://www.seepex.com/en-nam/products/pumps/standard-progressive-cavity-pumps/bn-pump-with-block-design/", "notes": "BN series — industrial PC pump. US distributors: Tencarva, Edelmann, Cummins-Wagner.", "sku": null, "step_url": null, "approved": true }, { "id": 138, "supplier_name": "Community Interest: Custom Batch", "product_url": "", "notes": "INTEREST CHECK — small-batch custom rotor+stator. CNC SS rotor + cast NBR stator. Need 10 commitments.", "sku": null, "step_url": null, "approved": true }, { "id": 135, "supplier_name": "Continental Ultra Pumps (Missouri)", "product_url": "https://www.continentalultrapumps.com/store/CP22-progressing-cavity-pump.html", "notes": "CP22 pump — 0.4-4.9 GPM, 100 PSI, 3/4\" NPT, chrome SS rotor, Buna stator. Smallest US-made PC pump. Call 636-456-6006.", "sku": "CP22", "step_url": null, "approved": true } ] }, { "id": 48, "category": "Concrete Extrusion System", "name": "Pump Drive Coupling — Universal Joint + Connecting Rod", "description": "Converts motor rotation to rotor orbital motion. PC pump rotors orbit eccentrically — a rigid shaft will break. Use gear-type universal joint or double-cardan joint.", "qty": 1, "unit": "coupling assembly", "mfg_type": "buy", "sort_order": 18, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 139, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Miniature universal joints + flex couplings. Match bore sizes to motor output and rotor drive shaft.", "sku": null, "step_url": "https://mcmaster.com", "approved": true }, { "id": 140, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Stainless steel universal joint couplers (8-14mm bores) + jaw couplings.", "sku": null, "step_url": null, "approved": true }, { "id": 141, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "CNC or metal SLS custom connecting rod. STL files in repo /cad/pump/ directory.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 49, "category": "Concrete Extrusion System", "name": "Pump Housing & Bearing Assembly", "description": "Encloses rotor/stator and provides bearing support. Must handle axial thrust. If using Continental CP22, housing is included. For DIY: CNC aluminum + sealed bearings.", "qty": 1, "unit": "assembly", "mfg_type": "cnc", "sort_order": 19, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 142, "supplier_name": "Continental Ultra Pumps", "product_url": "https://www.continentalultrapumps.com/", "notes": "CP22 housing included with pump purchase.", "sku": null, "step_url": null, "approved": true }, { "id": 143, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "DIY: Flanged ball bearings (sealed, SS) + Schedule 40 SS pipe as stator housing.", "sku": null, "step_url": null, "approved": true }, { "id": 145, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D printed PETG prototype housing for testing only — concrete slurry is abrasive.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 51, "category": "Concrete Extrusion System", "name": "48V Power Supply for Pump Driver (Optional)", "description": "Only needed if running external TMC5160 pump driver at 48V. Mean Well LRS-200-48 provides dedicated 48V for the geared stepper. Not needed if running pump from Kraken onboard driver at 24V.", "qty": 1, "unit": "PSU", "mfg_type": "buy", "sort_order": 21, "mpn": "LRS-200-48", "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 149, "supplier_name": "Mouser Electronics", "product_url": "https://mouser.com", "notes": "Mean Well LRS-200-48 — 48V 200W enclosed", "sku": null, "step_url": null, "approved": true }, { "id": 150, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "Mean Well UHP-200-48 — 48V slim profile", "sku": null, "step_url": null, "approved": true }, { "id": 151, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Mean Well 48V PSU — also on Amazon Prime", "sku": null, "step_url": null, "approved": true } ] }, { "id": 52, "category": "Concrete Extrusion System", "name": "Material Hopper 20-Liter", "description": "Material reservoir above the pump. HDPE or stainless for concrete compatibility. Printable in PETG for testing.", "qty": 1, "unit": "hopper", "mfg_type": "print", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 152, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Stainless steel hopper", "sku": null, "step_url": null, "approved": true }, { "id": 153, "supplier_name": "US Plastic Corp", "product_url": "https://usplastic.com", "notes": "HDPE funnel 5-gal", "sku": null, "step_url": null, "approved": true }, { "id": 154, "supplier_name": "Self-Manufacture", "product_url": "", "notes": "3D Printed PETG hopper", "sku": null, "step_url": null, "approved": true } ] }, { "id": 53, "category": "Concrete Extrusion System", "name": "Concrete Nozzle Assembly", "description": "Critical for print quality. Replaceable-tip design recommended for different layer widths (20-40mm).", "qty": 1, "unit": "assembly", "mfg_type": "cnc", "sort_order": 40, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 155, "supplier_name": "Local Machine Shop", "product_url": "", "notes": "Custom machined brass nozzle", "sku": null, "step_url": null, "approved": true }, { "id": 156, "supplier_name": "Local Machine Shop", "product_url": "", "notes": "Stainless steel nozzle", "sku": null, "step_url": null, "approved": true } ] }, { "id": 54, "category": "Concrete Extrusion System", "name": "Tubing & Quick Fittings", "description": "Pump to nozzle material flow. Reinforced hose rated for concrete slurry. Counter-weighted to reduce gantry loading.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 50, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 158, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Reinforced concrete-rated hose + fittings", "sku": null, "step_url": null, "approved": true }, { "id": 159, "supplier_name": "US Plastic Corp", "product_url": "https://usplastic.com", "notes": "Food-grade reinforced hose set", "sku": null, "step_url": null, "approved": true }, { "id": 160, "supplier_name": "Grainger", "product_url": "https://grainger.com", "notes": "Industrial reinforced concrete hose", "sku": null, "step_url": null, "approved": true } ] }, { "id": 56, "category": "Fasteners & Hardware", "name": "M5 Socket Head Cap Screws", "description": "Primary structural fasteners for 4080 C-beam frame (20-series compatible slots). M5 is the standard for 6mm slot width.", "qty": 1, "unit": "500pc kit", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 164, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "M5 SHCS assortment 500pc", "sku": null, "step_url": null, "approved": true }, { "id": 165, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "M5 SHCS basic set 500pc", "sku": null, "step_url": null, "approved": true }, { "id": 166, "supplier_name": "Bolt Depot", "product_url": "https://boltdepot.com", "notes": "M5 stainless kit 500pc", "sku": null, "step_url": null, "approved": true } ] }, { "id": 57, "category": "Fasteners & Hardware", "name": "M3 Socket Head Cap Screws", "description": "Electronics mounting and small parts. ~50 needed: Kraken (4), Pi 5 (4), buck converters (12), fans (8), DIN rail (12), misc brackets (10).", "qty": 1, "unit": "100pc kit", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 167, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "M3 SHCS assortment 100pc", "sku": null, "step_url": null, "approved": true }, { "id": 168, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "M3 SHCS assortment 100pc", "sku": null, "step_url": null, "approved": true }, { "id": 169, "supplier_name": "Digi-Key", "product_url": "https://digikey.com", "notes": "M3 electronics kit", "sku": null, "step_url": null, "approved": true } ] }, { "id": 58, "category": "Fasteners & Hardware", "name": "Washers & Lock Washers Assorted", "description": "Prevent loosening from vibration. Nord-Lock recommended for structural joints.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 170, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Complete M3-M8 kit", "sku": null, "step_url": null, "approved": true }, { "id": 171, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Basic washer set", "sku": null, "step_url": null, "approved": true }, { "id": 172, "supplier_name": "Grainger", "product_url": "https://grainger.com", "notes": "Nord-Lock washers", "sku": null, "step_url": null, "approved": true } ] }, { "id": 59, "category": "Fasteners & Hardware", "name": "Heat-Set Inserts M3/M5", "description": "Essential for threaded connections in 3D printed parts.", "qty": 1, "unit": "200pc kit", "mfg_type": "buy", "sort_order": 40, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 173, "supplier_name": "McMaster-Carr", "product_url": "https://mcmaster.com", "notes": "Brass insert kit M3+M5", "sku": null, "step_url": null, "approved": true }, { "id": 174, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Economy inserts M3+M5", "sku": null, "step_url": null, "approved": true }, { "id": 175, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "Premium knurled (CNC Kitchen style)", "sku": null, "step_url": null, "approved": true } ] }, { "id": 60, "category": "Optional Upgrades", "name": "Polycarbonate Enclosure Panels", "description": "Dust containment for indoor use. Sized to frame dimensions.", "qty": 1, "unit": "set", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 176, "supplier_name": "TAP Plastics", "product_url": "https://tapplastics.com", "notes": "Clear polycarbonate sheets — cut to size", "sku": null, "step_url": null, "approved": true }, { "id": 177, "supplier_name": "US Plastic Corp", "product_url": "https://usplastic.com", "notes": "Corrugated plastic panels", "sku": null, "step_url": null, "approved": true } ] }, { "id": 61, "category": "Optional Upgrades", "name": "LED Work Lighting", "description": "Work area illumination — 24V LED strips powered from main bus.", "qty": 1, "unit": "kit", "mfg_type": "buy", "sort_order": 20, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 178, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "24V LED strip 5m", "sku": null, "step_url": null, "approved": true }, { "id": 179, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "RGB LED strip 24V", "sku": null, "step_url": null, "approved": true } ] }, { "id": 62, "category": "Optional Upgrades", "name": "Camera Module for Monitoring", "description": "Remote print monitoring via KlipperScreen or Mainsail.", "qty": 1, "unit": "camera", "mfg_type": "buy", "sort_order": 30, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 180, "supplier_name": "Adafruit", "product_url": "https://www.adafruit.com", "notes": "RPi Camera v3", "sku": null, "step_url": null, "approved": true }, { "id": 181, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "USB Webcam 1080p", "sku": null, "step_url": null, "approved": true } ] }, { "id": 63, "category": "Optional Upgrades", "name": "HEPA Air Filtration", "description": "Concrete dust particle capture for indoor operation.", "qty": 1, "unit": "system", "mfg_type": "buy", "sort_order": 40, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 182, "supplier_name": "Grainger", "product_url": "https://grainger.com", "notes": "HEPA filter box fan unit", "sku": null, "step_url": null, "approved": true }, { "id": 183, "supplier_name": "Amazon", "product_url": "https://amazon.com", "notes": "DIY HEPA filter + fan", "sku": null, "step_url": null, "approved": true } ] }, { "id": 65, "category": "Frame - Reinforcement", "name": "X-Direction Internal Reinforcement (centered 2040 insert)", "description": "One 1000mm 2040 V-slot insert is friction-fit inside each 2m 4080 C-Beam X-direction member, centered on the butt joint so it spans 500mm on either side. Printed end retainers hold the insert in place; no adhesive is required for the current SN 001 method. The insert provides the primary centering and stiffness at the splice; the smaller in-slot connector bars (id 5) remain alignment aids only and can flex under gravity by themselves. The 2040 insert doubles the central internal features of the C-Beam at the highest-risk splice zone while preserving exterior carriage clearance and reducing reliance on steel set screws at the joint. Earlier analysis claimed less than 0.5mm flex under a 5kg load; SN 001 physical validation shows actual flex is far below that conservative claim. M3-1: not required. M3-2: qty 3 for the three spliced 2m X-direction members.", "qty": 3, "unit": "bars (1.0m each)", "mfg_type": "buy", "sort_order": 15, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 209, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "2040 V-slot aluminum extrusion, 1000mm insert centered across each 2m C-Beam butt joint.", "sku": null, "step_url": null, "approved": true }, { "id": 210, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "2040 V-slot, 1000mm insert centered across each 2m C-Beam butt joint.", "sku": null, "step_url": null, "approved": true }, { "id": 211, "supplier_name": "ZYLtech", "product_url": "https://www.zyltech.com/", "notes": "2040 V-slot, 1000mm insert centered across each 2m C-Beam butt joint.", "sku": null, "step_url": null, "approved": true }, { "id": 212, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "Printed end retainers hold the friction-fit 2040 insert in position; adhesive is not part of the current method.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 66, "category": "X-Axis Motion System", "name": "Idler Pulley Mounting Plate", "description": "3D-printed idler plates for belt return/tension points: 4x Z-axis + 2x Y-axis = 6 total. X-axis uses the 6mm gantry belt path and does not use this common idler plate line. Printed design carries the smooth idler pulley mount and tension feature.", "qty": 6, "unit": "plates", "mfg_type": "print", "sort_order": 35, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 213, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/pl0007/", "notes": "Reference commercial option only; SN 001 uses 3D-printed idler plates.", "sku": "PL0007", "step_url": "https://github.com/sunnyday-technologies/M3-CRETE/raw/main/CAD/Components/Plates/Idler Pulley Plate.step", "approved": false }, { "id": 214, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "Reference commercial option only; SN 001 uses 3D-printed idler plates.", "sku": null, "step_url": null, "approved": false }, { "id": 215, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/s?k=V-slot+idler+pulley+plate", "notes": "Reference commercial option only; SN 001 uses 3D-printed idler plates.", "sku": null, "step_url": null, "approved": false }, { "id": 216, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "SN 001 source of truth: print 6 total plates in PETG/CF-Nylon.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 67, "category": "Frame - Extrusions", "name": "C-beam 40×80 × 1000 mm — Frame Member (SDT Standard)", "description": "The M3-CRETE reference frame is a single primary extrusion SKU: C-Beam 40x80 aluminum extrusion cut to 1000mm, quantity 17 reference pieces plus 1 spare for a total order of 18. This is the SDT (Sunnyday Technologies) standard: all primary frame members use 4080 C-Beam, no mixed frame extrusion profiles, no 1200mm stock, no 1500mm stock. The 1000mm length is the longest extrusion that fits a standard UPS/FedEx 42-inch parcel box, which gates whether a kit can ship ground or requires pallet freight. The 17 reference pieces make up: 4 Z-posts, 3 top Y-rails, 2 bottom Y-skids, 2 mid-height Y-gantry rails, 4 top X-rails spliced at center for the 2000mm X-direction spans, and 2 mid X cross-braces spliced at center. Spliced 2m X-direction members use the centered 2040 internal reinforcement insert and printed retainers (id 65/id 85). See https://m3-crete.com/blog/m3-2-full-cad-release/ for the full design rationale.", "qty": 18, "unit": "pieces", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 1101, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/product/v-slot-4080/", "notes": "Factory-direct from China, DDP sea freight 30-35 days. Stocks 100-1500 mm in 50 mm increments. Select 1000 mm at checkout.", "sku": null, "step_url": null, "approved": true }, { "id": 1102, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/product/c-beam/", "notes": "US domestic warehouse, Atoka OK. UPS Ground ~3 days. Stocks 1000 mm, 1500 mm, and 2400 mm (2400 mm requires freight quote). Select 1000 mm Black C-Beam at checkout.", "sku": null, "step_url": null, "approved": true }, { "id": 1112, "supplier_name": "ZYLtech Engineering", "product_url": "https://www.zyltech.com/zyltech-4080c-v-groove-aluminum-extrusion-pre-cut-sizes-1000mm-and-1200mm/", "notes": "Houston TX warehouse, US domestic ground ship. Stocks 1000 mm and 1200 mm pre-cut lengths. Select 1000 mm at checkout.", "sku": "4080C-1000", "step_url": null, "approved": true } ] }, { "id": 69, "category": "Motion - Plates", "name": "Common 125x125 C-Beam Gantry Plate (Y/Z candidate)", "description": "Y/Z carriage plate candidate using the same 125x125mm C-Beam gantry plate geometry across the machine where practical. 4x Z-corner + 2x Y-gantry = 6 total. This replaces the previous smaller-standard-vs-XLarge split and is intended to reduce total part count while allowing component swaps. Fit-check on SN 001 before freezing.", "qty": 6, "unit": "pc", "mfg_type": "buy", "sort_order": 10, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 1107, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "Common 125x125mm C-Beam gantry plate candidate; avoid 125x170 XLarge unless explicitly re-approved.", "sku": null, "step_url": null, "approved": true }, { "id": 1108, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "Common 125x125mm C-Beam gantry plate candidate; verify wheel pattern before purchase.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 84, "category": "Motion - Plates", "name": "Common 125x125 C-Beam Gantry Plate (X-axis pair)", "description": "X-axis double-plate carriage pair using the same 125x125mm C-Beam gantry plate geometry targeted across Y/Z/X. 2 plates total (double-plate sandwich on the 2m gantry beam, 4 wheels each = 8 X-axis wheels). Do not use the 125x170mm XLarge plate path unless explicitly re-approved; the common plate strategy reduces total part count and supports component swaps.", "qty": 2, "unit": "pc", "mfg_type": "buy", "sort_order": 11, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 1288, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "125x125mm C-Beam gantry plate; avoid 125x170mm XLarge unless explicitly re-approved.", "sku": null, "step_url": null, "approved": true }, { "id": 1289, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "125x125mm C-Beam gantry plate equivalent; verify dimensions before purchase.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 75, "category": "3D-Printed Structural", "name": "Z Motor Mount / Y-Spacer Plate (3D printed)", "description": "Simple printed plate at each Y-motor position (2 total): 80x107x4mm NEMA23 motor mount/spacer that holds the rotated motor flange ~45 deg about its shaft so the 4 NEMA23 mounting holes align with the V-slot centerlines for direct T-nut mounting. As of M3-2_V1.0 design, Z-motors use bot_spacer_idler (id 79) at the top corners instead of this plate.", "qty": 2, "unit": "pieces", "mfg_type": "print", "sort_order": 35, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 1275, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "3D print in PETG (8mm walls, prototype) or CCF (3-4mm, production). STL generated from CadQuery script.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 77, "category": "3D-Printed Structural", "name": "Expanded Center T-Bracket (spreader junction, 3D printed)", "description": "Large T-bracket at center Y-spreader / X-rail junctions. 280x160x4mm, 17 M5 holes aligned to C-beam slot centerlines. Grabs both the spreader end and the adjacent X-rail sections for full junction rigidity. CAD: CAD/Custom/Center_T_Bracket_Expanded.step", "qty": 2, "unit": "pieces", "mfg_type": "print", "sort_order": 37, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 1277, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "3D print in PETG (8mm walls, prototype) or CCF (3-4mm, production). STL generated from CadQuery script.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 79, "category": "3D-Printed Structural", "name": "Bottom Spacer/Idler Mount (4mm, combined, 3D printed)", "description": "Combined bottom-spacer/idler-mount printed plate (4mm). 8 total: 2 per Z-corner (top + bottom). The TOP variant doubles as the Z-motor mount in the V1.0 design, holding the NEMA23 against the C-beam top. The BOTTOM variant carries the lower idler axle for the Z-belt loop. Identical geometry, different role per position.", "qty": 8, "unit": "pieces", "mfg_type": "print", "sort_order": 38, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 1279, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "3D print in PETG (8mm walls, prototype) or CCF (3-4mm, production). STL generated from CadQuery script.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 81, "category": "3D-Printed Structural", "name": "Y-Motor 4mm Spacer (3D printed)", "description": "DEPRECATED in M3-2_V1.0 (2026-04-29). The Y-motor 4mm spacer role is now subsumed by the unified z_motor_mount plate (id 75, qty 2). Kept here for changelog continuity; do not order. 4mm spacer plate between Y-axis NEMA23 motor flange and C-beam 80mm face. Motor is rotated ~45 degrees about its shaft axis so the 4 mounting bolts align with the V-slot centerlines, allowing direct T-nut mounting into the extrusion. The spacer prevents the motor body from intruding into the C-beam channel. Geometry TBD (small NEMA23 mounting footprint with bolt pattern). PETG or CCF.", "qty": 0, "unit": "pieces", "mfg_type": "print", "sort_order": 40, "mpn": null, "substitute_ok": false, "exclude_from_kit": true, "suppliers": [ { "id": 1281, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "3D print in PETG or CCF.", "sku": null, "step_url": null, "approved": true } ] }, { "id": 82, "category": "Frame - Reinforcement", "name": "Legacy Frame Splice Backup Plate (6mm aluminum, optional)", "description": "DEPRECATED in M3-2_V1.0 (2026-04-29). Internal 2040 V-slot reinforcement (id 65, qty 3) replaces this plate; per design the 2040 stiffness is far beyond needs and no external plate is required. Legacy optional external backup plate for a 2m X-direction splice. Current SN 001 method uses the centered 2040 friction-fit internal insert with printed retainers (id 65/id 85), so this exterior plate is not part of the reference kit unless a later load case explicitly requires it.", "qty": 0, "unit": "plates", "mfg_type": "buy", "sort_order": 16, "mpn": null, "substitute_ok": true, "exclude_from_kit": true, "suppliers": [ { "id": 1282, "supplier_name": "McMaster-Carr", "product_url": "https://www.mcmaster.com/products/aluminum-sheets/thickness~6-mm/", "notes": "6mm aluminum flat stock 6061-T6, cut to ~200x80mm", "sku": null, "step_url": null, "approved": true }, { "id": 1283, "supplier_name": "Metals Depot", "product_url": "https://www.metalsdepot.com/", "notes": "6mm (1/4 in nominal) aluminum flat bar, cut to length, ships from Kentucky", "sku": null, "step_url": null, "approved": true }, { "id": 1284, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/s?k=6mm+aluminum+flat+plate+6061", "notes": "6061-T6 aluminum flat plate, various stock sizes", "sku": null, "step_url": null, "approved": true } ] }, { "id": 83, "category": "Frame Hardware & Brackets", "name": "V-Wheel Axle Spacers 6mm (plain cylindrical)", "description": "One per wheel, outboard of wheel between wheel face and washer/lock nut. 6mm tall, ~10mm OD, 5.1mm bore (M5 clearance). Measured on SN 001 assembly 2026-04-23: 5mm to reach track + 1mm running gap = 6mm required. Full wheel stack: M5 bolt -> plate -> eccentric spacer (id 7, 6mm) -> V-wheel -> THIS spacer (6mm) -> washer -> lock nut. All 32 wheel positions. 60 ordered for SN 001 (surplus covers spares and inner bearing spacers if needed).", "qty": 32, "unit": "pieces", "mfg_type": "buy", "sort_order": 26, "mpn": null, "substitute_ok": true, "exclude_from_kit": false, "suppliers": [ { "id": 1285, "supplier_name": "Bulkman3D", "product_url": "https://bulkman3d.com/", "notes": "V-Slot standard spacer 6mm, M5 bore — matches eccentric spacer OD", "sku": null, "step_url": null, "approved": true }, { "id": 1286, "supplier_name": "MakerStore USA", "product_url": "https://makerstore.cc/", "notes": "Standard 6mm spacer, M5 bore, matches V-wheel assembly kit", "sku": null, "step_url": null, "approved": true }, { "id": 1287, "supplier_name": "Amazon", "product_url": "https://www.amazon.com/s?k=M5+aluminum+spacer+6mm+V-slot", "notes": "M5 bore aluminum standoff spacer 6mm length — verify 10mm OD to match wheel assembly", "sku": null, "step_url": null, "approved": true } ] }, { "id": 85, "category": "3D-Printed Structural", "name": "2040 Insert End Retainers (3D printed)", "description": "Printed end retainers for the centered 2040 reinforcement inserts used inside 2m 4080 C-Beam X-direction members. The 2040 insert friction-fits with light pressure; retainers prevent migration without adhesive and keep the reinforcement method field-serviceable.", "qty": 6, "unit": "pieces", "mfg_type": "print", "sort_order": 39, "mpn": null, "substitute_ok": false, "exclude_from_kit": false, "suppliers": [ { "id": 1290, "supplier_name": "Self-Manufacture", "product_url": null, "notes": "Print two retainers per reinforced 2m X-direction member; qty assumes 3 reinforced members for M3-2 and should track final spliced-member count.", "sku": null, "step_url": null, "approved": true } ] } ], "notes": "v2.7 (M3-2 V1.0 freeze, 2026-04-29): unified mount-plate design — id 75 (qty 2) covers Y-motors only; id 79 (qty 8) bot_spacer_idler doubles as Z-motor mount at top corners; id 65 (qty 3) internal 2040 V-slot inserts replace external splice plates. Deprecated: id 81 (Y-spacer merged into id 75) and id 82 (Frame Splice Backup Plate, replaced by 2040 inserts). Earlier basis (kept for context): all primary frame members are 4080 C-Beam at 1000mm; X-direction 2m members use centered 2040 friction-fit inserts; belt width 6mm on X-axis, 10mm on Y/Z; quad-Z self-tramming; NEMA23 8mm-shaft motors with StallGuard4 sensorless homing." }