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Bertho's extruder (Thing 26094) is a great improvement for the ultimaker which requires a pretty solid spring.
The one I got happened to have a diameter of a little over a centimetre, and when you place this around a 3M bolt it can easily move off centre.
This 'end cap' is designed to thread over the 3M bolt and surround the end of the spring to keep it centred.
Simple parametric script incase anyone wants to fiddle to fit a different sized spring.
Print 2 and place them around the spring for your extruder :)
Spring endcap for Bertho extruder by fantom is licensed under the Creative Commons - Attribution - Non-Commercial license.
So what's this mean?
We're sure fantom would love to see what you've printed - take a photo and share it on Thingiverse as a Make.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. You can also download the Thingiverse Mobile app (available via Google Play and Apple App Store) to take a photo and upload your Make right from the app!