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| Item | Amount | Description | Source of supply | Comment |
|---|---|---|---|---|
| Extruder Screw | 1 | extruder screw | custom part, steel, drawing/parameters | |
| Extruder Block / Kühlblock | 1 | holds barrel; integrated water cooling | custom part, steel, drawing | |
| Extruder Barrel / Schneckenzylinder | 1 | screws into extruder block | custom part, steel, drawing | |
| Nozzle | 1 | standard 3D printer nozzle, type E3D V6 1.75mm; optionally hardened | e.g. https://www.aliexpress.com/item/4000463888666.html | |
| NEMA 23 Stepper Motor with gear box | 1 | see notes below | ||
| Shaft Coupler | 1 | rigid shaft coupler 10mm to 12mm, D=max30, L=40 | e.g. https://www.dold-mechatronik.de/Wellenkupplung-starr-D30L40-1000-1200mm https://www.aliexpress.com/item/400000201020432845730754.html | do not use flexible couplers, they cannot take vertical load |
| Heating Element | 1 | 230V heater spiral, ID=15mm, h=40mm | e.g. https://www.aliexpress.com/item/32629957364.html | wraps around barrel |
| Metal Cage | 1 | several laser cut aluminum parts | custom parts, aluminums 3mm, see laser-cutting folder on github | |
| Pellet Inlet | 1 | custom part, PLA, 3d printed, see 3d-printing folder on github | ||
| Pellet Tank | 1 | custom part, PLA, 3d printed, see 3d-printing folder on github | ||
| Temperature Sensor | 1 | standard thermistor for use with 3d printer controller board (e.g. 100K NTC) | e.g. https://www.ebay.de/itm/321913407822 or thermocouple integrated in above heater element, then use this temperature controller (not compatible with typical 3d printer hardware): https://de.aliexpress.com/item/32954616330.html?spm=a2g0o.cart.0.0.23af3c00hLDu73&mp=1 | |
| M5 x 120 | 4 | steel screw | ||
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