MakerGear M2 Smooth Spool Holder

thingiverse

I was underwhelmed by the stock spool holder - mainly because the printer isn't a bowden-driven design, and with rapid movements, the head pulls the filament quite forcefully. Unfortunately, the stock holder has relatively high friction, which creates unwanted effects. I decided to come up with a design that would provide smooth filament supply :)\r\n\r\nFew notes:\r\n* Please use the concise version; the lengthy one was simply a proof of concept and seems outdated these days,\r\n* It's based on the original spool holder design file provided in: https://github.com/MakerGear/M2, so you'll reuse the original mounting screws,\r\n* It only requires a single lock ring because the right-hand side (assembly view) bearing rests against an extruded 14mm ring on the holder,\r\n* Originally I designed the cones "full", but this is a 2nd revision and they're significantly cut out to save material - they'll probably be even smaller in the future,\r\n* The little rectangular features on the "bottom" of the cones are for easier release from the build surface (you may use a small flat screwdriver to do so),\r\n* It uses 8mm shaft (~20cm for the first, long version and ~10cm for the short one) and two 608Z bearings (8mm ID, 22mm OD, 7mm thickness),\r\n* The right-hand-side cone has a bearing mounted on the inside (facing the spool) - I hope radial friction will hold it in place...,\r\n* You may need to jam the shaft into the holder,\r\n* The ring uses M3 bolt and corresponding nut,\r\n\r\n*I haven't tested it yet, I'll print it soon and post pictures!*