Status: version 1.9, in testing
View 3D CAD file: Extruder_NEMA23_V1.9.step - 3D view
Github repository: https://github.com/ProjectFabMX/FabMX_Extruder
BOM
| Item | Amount | Description | Source of supply | Comment |
|---|---|---|---|---|
| Extruder Screw | 1 | custom part, steel | ||
| Extruder Block | 1 | holds barrel; integrated water cooling | custom part, steel | |
| Extruder Barrel | 1 | screws into extruder block | custom part, steel | |
| Nozzle | 1 | standard 3D printer nozzle; hardened | e.g. https://www.aliexpress.com/item/4000463888666.html | |
| NEMA 23 Stepper Motor with gear box | 1 | use a gear ratio of 1:20 to 1:45 | e.g. https://de.aliexpress.com/item/4000341116560.html longer NEMA23 optional | |
| Shaft Coupler | 1 | shaft coupler 10mm to 12mm | e.g. https://www.aliexpress.com/item/4000002010204.html | |
| Heating Element | 1 | 230V heater spiral, ID=15mm, h=40mm | e.g. https://www.aliexpress.com/item/32629957364.html | wraps around barrel |
| Metal Housing | 1 | several laser cut aluminium parts | custom parts, aluminium, last cut | |
| Pellet Inlet | 1 | custom part, PLA, 3d printed | ||
| Temperature Sensor | 1 | standard Termistor of controller board | or TC in heater element, then use this temperature controller: https://de.aliexpress.com/item/32954616330.html?spm=a2g0o.cart.0.0.23af3c00hLDu73&mp=1 | |
| M5 x 120 | 4 | steel screw | check size | |
| M4 (?) nuts | 4 | check size |
To run the extruder you will also need:
- PID controller for the heating element
- Water chiller