HackerBot extruder
Contents
Step 40: Extruder support plate
| qty | part name | description/notes |
| 1 | 80 x 120mm Aluminum plate 1.5mm thick | |
| 2 | M6x12 T-head bolt | Bosch-Rexroth 3842523920 |
| 2 | T-nut | Bosch-Rexroth 3842523925 |
Extruder is mounted on a plate on the back of Hackerbot
Step 41: Extruder assembly
| qty | part name | description/notes |
| 1 | Wade "tilt" extruder | Wade-Greg Tilt extruder |
| 1 | Hobbed bolt | with Nylock M8 Nut, M8 nut and 4 washers. |
| 1 | bowden adapter | |
| 2 | M3x20 screw kit | for bowden adapter |
| 3 | M3x6 | motor |
| 3 | 628 bearing | |
| 2 | springs | 25mm 1.5 thick |
| 2 | M4 threaded rod | length 70mm |
| 2 | square nut M4 | |
| 2 | M4 wing nut | |
| 1 | 8mm rod | length 18mm |
| 1 | 1/8" Pneufit 6mm | |
| 1 | square nut M3 | needed for small pulley |
| 1 | M3x6 grub screw | needed for small pulley |
| 1 | 10mm Expandable PET Cable Sleeve | length: 20cm - Use also some heatshrink. (RS: 408-198) |
Hobbed bolt step by step build guide: Hobbed bolt
Hobbed bolt:
extruder assembly:
Bowden adapter:
Extruder Motor Wiring:
| MOTOR | PANEL CONNECTOR | CABLE (LiYY 4x0.25) | A4988/DVR8825 |
| RED | » 1 « | Yellow | 1A |
| BLU | 2 | White | 1B |
| GREEN | 3 | Green | 2A |
| BLACK | 4 | Brown | 2B |
Mount on the frame:
Step 42: Hotends
Hotend tested:
- THead: [THead hotend]
- JHead: Jhead hotend
NTC CABLE LENGTH: 1m
Use a 40W 24V ceramic heater cartridge and EPCOS 100K NTC:
Put some thermal conductive paste: (we used a Boron Nitride heat sink grease CW7250)
Assemble cables with hotend, fix it with good nylon strip or any high temp resistant lock:
Put some high temperature silicon: (ex: we used a ACC Silcoset 158)
Cable wiring scheme:
| PANEL CONNECTOR | CABLE | note |
| 1 « | SILICON RED | Extruder power + |
| 2 « | SILICON BLACK | Extruder power ground |
| 3 « | LiYY BROWN | NTC |
| 4 « | LiYY WHITE | NTC |
assemble hotends into head and gently tighten the grub screws:
Please remember that multiple hotends should have the same height from the printbed!
Step 43: Extruder bowden
PTFE bowden tube is 3.18mm inner diameter, 6mm outer diameter and total length of one bowden tube is 600mm
