Spool Holder with Grooved Rollers
thingiverse
A while back I accidentally ordered some grooved rubber wheels. They sat in a box until I needed to make a spool holder. I figured the grooved rollers might work well for this purpose. I added a screw hole for mounting on a board or rail. PARTS: 4 grooved rubber rollers with bearings 4 M5 x 30-35mm machine screw 4 M5 nuts (opt. lock nuts) 4-8 spacers. Optional, not shown in photos. I printed mine on nice stringy PETG, but any material should be fine, other than flexible, of course.
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