No-Roll Spool Base

Why I made this: I store my spools vertically on a flat shelf to save space, but they kept rolling out of line. I made these little wedges to "park" them securely so they stay exactly where I put them.• Features:• Prevents spools from rolling off shelves.• Low profile so it doesn't get in the way.• Great for organizing narrow or sample spools.• Print a bunch at once to organize your whole shelf.