Ceiling Mount One-Piece Spool Holder

I really liked the [One Piece Spool Holder](https://www.thingiverse.com/thing:3036468) by alexwhittemore, but I wanted one that could mount to the ceiling. You'll need four #8 (or #10) SAE washers and some #8 wood screws, at least 30mm long. If you don't have a plywood ceiling the way I do in my workshop, then you'll want to use drywall anchors or something similar. I've also included a template for marking your holes to drill.

It's probably best to print this a bit stronger than usual, ma