UM3 Bowden Tube guide for Bondtech Extruder

Protect you pre-extruder bowden tube

3D printer parts and enhancements

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I use external Box to keep my filament dry but fast retraction causes wear and tear on the end of the bowden that contacts with the metal ring on the Bondech extruder. I decided to make a tube guide to protect the bowden tube which lessen the ticking/knocking sound that sometimes cause under extrusion or failed prints.

Pushing the filament on the tube works just fine when loading the filament. May be a bit cumbersome but well worth it as it protect the tube and lessen fail prints (only those cause by deformed tube). Removing the bowden tube from the guide and loading filament how you normally would push it work well also and during loading of filament the tube will guide itself inside without assistance.

- Printed in CPE+ and it fits just fine, little to no play but not friction fit on the extruder body but it sits well in place.
- No need to remove the metal ring on the extruder body.


Re-uploaded new model.
- Reduced the ID of the filament guide to reduce the play that bends the filament during fast retract.

Materials and methods

CPE+ Black
No support
UM3 with adhesion sheet



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B5408616f675845bb081133a0c2c3564?default=blank&size=40JPCLT11 added this to the Stuff collection ago
74637ddd9c05e8569750b756b7313729?default=blank&size=40Scherdin added this to the Um3 collection ago
Mini il 570xn.1343682359 2jz9The 3D printing Guy commented ago

Nice design, pleased that you made it open to the public!

55bedd75d0b12916c9a3494434835c23?default=blank&size=40robertstr added this to the Printer upgrades & stuff collection ago
B52e1cfa0ca3559fa24fd48662f9c537?default=blank&size=40jffry7 published this design ago