DarwinExtruderBOM
Darwin Thermoplast Extruder Bill of Materials
The AoI files for all the extruders rapid prototyped parts can be found in the RepRap Subversion Repository here. AoI can export these as STL files for rapid prototyping.
| Part | No. off | material | Supplier | In picture |
| clamp | 1 | polycaprolactone | RP part | A |
| motor holder | 1 | polycaprolactone | RP part | B |
| hex drive | 1 | polycaprolactone | RP part | C |
| polymer holder | 1 | polycaprolactone | RP part | O |
| screw holder | 1 | polycaprolactone | RP part | P |
| PTFE barrel holder | 1 | 16mm PTFE rod | D | |
| Extruder controller | 1 | - | instructions | E |
| 200:1 geared motor | 1 | - | Greenweld (CDT0302) Pololu (GM3) | K |
| Heater barrel | M6 brass/steel/Al studding | J | ||
| 200mm Heater wire | 1 | 0.2mm nichrome | Pelicanwire (32 AWG NICHROME 80) | J |
| M6 dome nut | 1 | brass/steel/Al | Hardware shop | I |
| thermistor | 1 | glass bead type | RS (484-0149) | I |
| Half bearing | 2 | brass | - | P |
| Screw drive | 1 | M5 steel studding | - | Q |
| Flexible coupling | 1 | 3mm steel wire | - | Q |
| M5 Drive nut | 1 | brass/steel | - | Q |
| PCB screw | 1 | M3 15mm cap screw | - | F |
| 25 mm screws | 4 | M3 cap screws | - | F |
| 35 mm screws | 7 | M3 cap screws | - | F |
| guide screws | 4 | 55mm M3 studding | - | L |
| clamp screw | 1 | 30 mm M4 cap screw | - | R |
| M4 washers | 2 | brass/steel | - | S |
| M4 nut | 2 | brass/steel | - | T |
| M3 nuts | 20 | brass/steel | - | H |
| M3 washers | 34 | brass/steel | - | G |
| Silicone tube | 100 mm | 3mm internal | - | M, N |
| 2-way fine ribbon cable | 210 mm | - | - | K |
| 4-way fine ribbon cable | 210 mm | - | - | - |
| Grease | 1 small tub | - | Hardware shop | P |
| high-temp epoxy | 1 set | JB Weld | Hardware shop | I, J |
| Plumber's thread seal tape | 100mm | PTFE | Hardware shop | - |
The picture has 32 M3 washers, but you need 34 (no one's perfect...). Where the material says brass/steel you can choose either, but see the ExtruderMechanicalParts page for more details. There is no significance to the fact that the clamp is green in the picture - we were just trying out a different coloured polymer.
-- Main.AdrianBowyer - 06 May 2007
