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2014-08-06: Uploaded a version for 6.35mm shaft as requested.
2013-10-18: Changed the files to two new designs in pretty high resolution. They are 20mm in diameter and 33mm high. It has 15 turns. When you use 2 turn for driving (as I do in my Rostock since a year) 13 turns for movement will remain.
20mm * 3.1415 = 62,8mm
62,8 * 13 = 816mm --> This should be enough for your ultimaker.
I'm going to build my own derivate of an Ultimaker. I want to use the fishing line setup from my Rostock Delta Robot instead of a tooth belt. These are the two pulleys.
Feel free to ask any question.
print the parts from ABS with a layer height of 0.175mm and you will get great results.
Adding a photo later.
Fishing Line Pulley for my DIY Ultimaker by mm-cnc is licensed under the Creative Commons - Attribution license.
So what's this mean?
We're sure mm-cnc 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!