Kuro's Compact Bowden Geared Extruder
UPDATE: gears should fit each other with less slop now.
Designed to fit a Rostock Mini, this design can be used in other printer adjusting the support, that is fixed on two of the extruder motor bolt holes.
It uses a MK7 drive gear and 625zz bearings.
The only thing I didn't really like on this extruder is the use of a 3/16" nut to fix the PTFE. It's troublesome to assemble and I really prefer using the press fits.
It's recommended to fit the 3/16" nut and then fixing the PTFE in the extruder the first thing, or you will have some bad time fixing it after assembly of the extruder.
Printed Parts (minimum)
- Extruder body
- 2 springs for idler tension
- 3 625zz bearings
- 1 MK7 drive gear
- 1 M5x40mm hex headed bolt
- 1 M5x30mm bolt
- 2 M3x35mm bolts
- 1 M3x20mm bolt
- 2 M3x10mm bolt
- 1 3/16" nut
- Assorted nuts and washers