V-slot wheel for 608ZZ bearing

thingiverse

This compact collar transforms your excess 608ZZ bearings into v-slot wheels. I sliced the design in CURA with the z seam alignment set to random, which seems to eliminate humps - mine turned out silky smooth at a .1mm layer height. It's slightly oversized (10mm width versus 7mm bearing), but that adds stability. I printed it without supports and used a brim plate for adhesion.