Printrbot Simple Metal Reverse Bowden (Feed Tube) by LayerLabs 3d model
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Printrbot Simple Metal Reverse Bowden (Feed Tube) by LayerLabs

Printrbot Simple Metal Reverse Bowden (Feed Tube) by LayerLabs

by Thingiverse
Last crawled date: 3 years ago
Reverse bowden setups help relieve tension on the extruder by the filament by making the length of filament between the spool and extruder constant. This was designed to printed in PETG but any strong and moderately flexible plastic should work. I did bend the flaps on the aluminum spool rack to be closer to 90 degrees to the top of the rack.
Edit (12/20/2016): updated extruder piece to fit better, angled filament piece to provide a more natural path for the filament, and updated bar to make feeding easier (filleted guide for filament). I'm very satisfied with this design and it will probably be the final revision, but feel free to comment with issues or suggestions and I'd be glad to update the files.
Files to print:
2 x filament
1 x extruder
1 x filament bar

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