I wanted to make a new Extruder for an printer that I changed to an “bowden setup”.
My aim was to make it simple, strong and that the filament could be pressed super hard against the driver gear. Filament can be guided with a adjustable guide. For now I kept the gland nut(experimental), but included parts that can be adjusted for regular Teflon tube holders. On the printer on the pictures the gland nut works really well. This extruder en tube setup has made the print test of 20 hours. But on another printer of mine the gland nut works not so good. It's because that one prints with much higher speeds (60mm/s and higher) and than the gland nut does not hold so good anymore. I found that it does help to put Katon tape one the tube :-) I am still experimenting with other tube holder methods :-)
The little filament driver (11mm diameter) is mounted on an M8x50mm bolt I had lying around. On the lathe I turned the end of this M8 bolt down to 5mm so the driver can be mounted on it. See pictures
The model is made for 1,75mm Filament . For 2,85mm & 3mm Filament the holes need to bored out to the correct size.
If you have any questions feel free to ask
Printers: Customs & Anets
Design Programs: 123D Design, Inkscape, MeshMixer
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