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This is a simple hub that lets you press-fit a skate bearing into it, to mount on a 5/16th threaded rod, and provide a much lower friction filament supply than just putting your spool over a toilet paper holder or a piece of PVC.
The part should be about right to press over a bearing ring with a vise, or just with good pressure on a solid flat surface. The four little nubs on the inner perimeter are on purpose for a good friction fit.
The outermost diameter should fit into the 'stepped' portion of the spool ends for the filament spools from Solidoodle. The longer extending cylinder should penetrate into the spool a bit further.
Filament spool bearing-ring hub by rtrski is licensed under the Creative Commons - Attribution - Share Alike license.
So what's this mean?
We're sure rtrski 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!