Bowden Cable Coupling for RepRap
by Erik, published
Liked ByView All
Give a Shout Out
If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.Print Thing Tag
This is only for people who want to print really fast ;)
Its use is shown in this video:
This is the filament drive mechanism end of the Bowden extruder. The same coupling could be used on the other end (the extrusion, or hot end), or a special purpose (smaller) coupling could be designed to fit your specific extruder (one that also clamps the heater insulator).
The idea of turning a nut onto the PTFE tube comes from profounddevices. I really liked it so much that I replaced my previous design to incorporate this idea.
I\'m thinking of using the nut as part of an electrical switch to get feedback of when the pressure is fully released. This way you can put reversing functionality in the firmware without needing to configure it per material.
The concept of using a Bowden cable as guide was suggested and pioneered by Ed Sells. See his post here:
If you can print to high tolerances or don't mind some trial and error prints, you can use a 'push to fit' variant of this coupling:
- Start printing the part.
- Screw nuts onto the ends of the PTFE tube (see parts list). If needed, cut a little material away from at the end of the tube to make it fit.
- If your filaments do not run through easily anymore, run a 3mm drill through the end where you have the nut.
- If you want it to be able to stand more force, put a drop of super glue on the PTFE (above the nut) and screw the nut a bit further. Then truncate the PTFE to be flush with the nut.
- Push it into the printed part.
Upgrade this Thing with Thingiverse AppsCustomization
Edit, personalize, or revise this ThingPrint Fulfilment
Order a print of this ThingTools and Utilities
Repair, slice, or enhance this Thing
Bowden Cable Coupling for RepRap by Erik is licensed under the GNU - GPL license.
What does this mean?
- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
Show Some Love
Say thanks by giving Erik a tip and help them continue to share amazing Things with the Thingiverse community.Tip Designer
We're sure Erik would love to see what you've printed. Please document your print and share a Make with the community.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. It’s even easier to post a Make via the Thingiverse Mobile app (available via Google Play and Apple App Store).