Bowden tube feeder with filament release mechanism
This is a Bowden tube direct drive filament feeder for 1,75mm filament. (User Kert made a remix for 3mm fillament using a geared stepper over here: http://www.thingiverse.com/thing:306532)
The great thing of this feeder is that it has a quick release mechanic to remove the tension of the filament on the extruder motor. This way you can easily remove en feed filament by hand.
I've made a complete instruction video how to assemble the feeder and explanation of the inner working mechanics:
(One mistake in video: the two 45mm M4 bolds should be 50mm)
Also included is a filament spool holder for extrusion bars
If you use it, please share a picture!
Print everything without support. Print the visible text by pausing en change filament after the first 3 layers.
See instruction video how to assemble.
Use 2,5cm pipe for the filament spool holder
Feeder parts list:
- 4 x M3 x 8mm
- 1 x M4 x 16mm
- 3 x M4 x 30mm
- 2 x M4 x 50mm (IS WRONG IN VIDEO!)
- 2 x M4 x 15mm
- 10 x M4 Washers
- 4 x self-locking M4 nuts
- 2 x M4 nuts
- 1 x bearing. Dia:13mm W:5mm Hole:4mm
- 1 x toothed wheel (Felix)
- 2 x springs Dia:7,5 mm L:15mm (Ikea clothes Pegs)
- 1 x Nema 17 stepper motor
You can buy the toothed wheel over here: