Spindle/Spool Hub

thingiverse

A 608Z-bearing-compatible spool hub features an inside hole for easy pressing. Two of these are attached to an M8 rod and fastened to hold an ABS spool. Adapt the file for custom spool sizes, like my 45mm-holed spools. The hub's bottom and top edges have a 2.5mm fillet for effortless bearing insertion and spool fitting. To assemble, place your bearing on a flat surface and press the hub onto it until securely in place. This print required minimal post-processing cleanup.