Mini Select Filament Roller
thingiverse
Mounts on the Filament holder that comes with the mini. I used a bearing sized, 11mm od, 5mm ID and 4mm wide. print 2 of the ends and one roller. Roller probably needs supports, I used them. Slide one end over then the other end and press the roller into the bearings. Holds my 1Kg rolls of filament with space to spare. Bearings https://www.amazon.com/Hobbypark-Bearings-5x11x4mm-Associated-Traxxas/dp/B019EZD22Y/ref=sr_1_4?crid=1B7WBSQQAY3TJ&keywords=rc+bearings+5x11x4&qid=1556202076&s=gateway&sprefix=rc+bear%2Caps%2C145&sr=8-4
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