Bottle Cap crafty jigs

A buddy of mine was crafting up some Nuka-Cola caps so I designed these for him. They hold your bottle caps from rotating or moving while you work on them. They are currently designed for holding caps right side up only - let me know if you want a version for upside down caps.

These held any of the non-mangled beer bottle caps I tried to put in them -- some of them required a bit of squeezing to get in, and others were loose and jiggled a little bit (but still couldn't rotate). Your results