Fab Unit is a narrow-form factor bookshelf 3D printer realized using the Cantilevered DeltaXY mechanism. It has a chassis width of 127mm and a build area of approximately 120x120mm, leading to an LSE of 94%.
CAD data for the Fab Unit prototype can be found here in STEP format. This is currently provided as a multi-body master model. In the future we will consider providing a multi-part assembly file.
| Location | Description | QTY | Supplier | P/N | Notes |
| XY Actuation | MGW9 guide rail, L=200mm | 2 | Hiwin | MGW-R-9-R0200-H-M | |
| MGW9 bearing block, Z1 preload | 2 | Hiwin | MGW-9-H-Z1-H-M | ||
| NEMA 17 stepper motor | 2 | Lin Engineering | G4518L-02 | Replace with equivalent | |
| GT2 idler pulley, 20T, 5mm ID, 15mm OD | 2 | Dodobei | 6mm belt width | ||
| Shoulder screw, 5mm OD x 20mm L | 2 | McMaster | 90278A374 | Idler shaft | |
| GT2 pulley, 20T, 5mm ID, 16mm OD | 2 | Winnsin | 6mm belt width | ||
| GT2 open timing belt, ~416mm length | 2 | Generic | |||
| GT2 belt clamp, 9x40mm | 2 | 3DMAN | |||
| Shoulder | Needle-roller thrust bearing, 6x19mm | 4 | McMaster | 5909K29 | Fig. 12D+G in paper |
| Thrust bearing washer, 1mm thick | 6 | McMaster | 5909K293 | Fig. 12D+G | |
| Thrust bearing washer, 2.75mm thick | 2 | McMaster | 5909K294 | Fig. 12G top washer | |
| Belleville disc spring, 6.2 ID x 15 OD | 6 | McMaster | 96445K294 | Fig. 12H, for preload | |
| Ball bearing, 6mm ID x 10mm OD | 2 | McMaster | 7804K111 | Fig. 12E | |
| Belleville disc spring, 6.2x9.8mm | 2 | McMaster | 94065K24 | Above Fig. 12E | |
| Compression spring, 12.7mm L | 2 | McMaster | 9002T16 | Fig. 12I, for preload | |
| Shoulder screw, 6mm OD x 35mm L | 2 | McMaster | 90278A306 | Fig. 12F | |
| Shortening shims, 6mm ID x 0.5mm | 6 | McMaster | 91437A171 | preload adjustment | |
| Toolhead | Thin ball bearing, 15x21x4mm | 1 | McMaster | 6656K181 | Fig. 13F in paper |
| Thrust ball bearing, 12x24mm | 1 | McMaster | 6655K76 | Fig. 13H | |
| Wave Disc Spring, 13x24mm | 1 | McMaster | 3726N607 | Fig. 13G | |
| Shaft Collar, 12mm ID x 25mm OD | 1 | McMaster | 7731N34 | Fig. 13I | |
| Extrusion | E3D RapidChange Revo Micro Hotend | 1 | E3D | REVO-MICRO-175-24V-AS | |
| Bondtech LGX Extrusion Drive | 1 | Bondtech | EXT-LGX | ||
| PTFE Bowden Tube, 2mm ID x 4mm OD | 1 | ||||
| Print Bed | Voron 0.1 Heated Print Bed 120x120mm | 1 | |||
| Voron 0.1 PEI Build Plate 120x120mm | 1 | ||||
| Z Actuation | MGW9 guide rail, L=170mm | 1 | Hiwin | MGW-R-9-R0170-H-M | |
| MGW9 bearing block, Z1 preload | 1 | Hiwin | MGW-9-H-Z1-H-M | ||
| NEMA 14 external nut actuator, 2.54mm/rev | 1 | OMC Stepper Online | 14E19S1504GF5-150RS | 1.5A/phase, 47mm L | |
| Electronics | 4-Axis Motion Control Board | 1 | BIGTREETECH | MANTA M4P | |
| TMC2209 Microstepping Drivers | 4 | BIGTREETECH | TMC2209 V1.3 | ||
| Raspberry Pi Compute Module 4, 8GB RAM | 1 | Raspberry Pi | SC0677 | ||
| Heatsink for Raspberry Pi CM4 | 1 | Waveshare | |||
| 4inch HDMI Cap Touch IPS LCD Display | 1 | XYGStudy | 720x720px | ||
| USB Lavalier Microphone | 1 | Maono | AU-UL10 | ||
| Panel-Mount Pushbutton, Green | 1 | E-Switch | PV0H240SS-231 | ||
| Panel-Mount Pushbutton, Red | 1 | E-Switch | PV0H240SS-211 | ||
| Panel-Mount Pushbutton, Blue | 1 | E-Switch | PV0H240SS-241 |