Snap-Together 608 Spool Holder

thingiverse

This is a pre-assembled 608 bearing spool roller that snaps together seamlessly. Print four units, then snap two of them into each pair of 608 bearings, securing them firmly on a spool base. You will need to experiment with scaling to achieve a precise press fit, one that's neither too tight nor too loose. Alternatively, you can use a small amount of cyanoacrylate adhesive to semi-permanently bond the bearings and sides together.