Extruder and X-carriage
Printed Parts
Description | Count |
---|---|
X-carriage | 1 |
Hot end retainer | 1 |
Drive mount | 1 |
Drive spacer | 1 |
Large helical gear | 1 |
Small helical gear | 1 |
Drive body | 1 |
Drive idler | 1 |
Vitamins
Description | Count |
---|---|
M6 nut | 2 |
M4 x 50mm hex head cap screws | 4 |
M4 washers | 10 |
M4 nut | 6 |
M4 x 16mm cap screws | 2 |
M3 washer | 4 |
M3 x 10mm cap screw | 4 |
M3 x 8mm set screw | 1 |
M3 nut | 1 |
M8 nut | 2 |
M8 washer | 8 |
Hobbed bolt | 1 |
M8 nylon lock nut | 1 |
3/8" x 9/32" spring | 4 |
8mm x 25mm drill rod | 1 |
Hot end retainer | 1 |
608zz bearing | 3 |
1/8" ID x 1/4" OD x 630mm PTFE tubing | 1 |
Stepper motor | 1 |
J-head hotend, assembled | 1 |
Assembly - Summary
- Prepare printed parts
- Assemble extruder drive
- Assemble x-carriage
Assembly - Step-by-Step
- With a 3mm drill but, ream out the filament path through the extruder drive body and clean up the slots for the motor mounts. Used the 3mm drill bit like a file to ream out the 4mm openings for the idler mounts.
- Clean up gears with a sharp knife, removing any protrusions from teeth, flashing from the print-surface-side of the gears and open up the set screw nut trap on the small gear. With a 5mm drill bit, ream the small gear shaft opening. Use a 3mm drill bit to ream the set screw opening in the small gear.
- Ream the filament path in the extruder drive spacer and mount with a 3mm drill bit.
- Push the hot end retainer into its slot in the x-carriage and use a 3mm drill bit to ream the retainer screw holes. Use a sharp knife to open the retainer nut traps being careful to not remove too much material; remove any obstructions in the Bowden sheath opening.
- To facilitate threading the Bowden sheath retainer nut, taper the ends of the PTFE tubing in a pensil sharpener.
File:MOST HSPrusa extruder 20.jpg
File:MOST HSPrusa extruder 31.jpg