Simple Spool Holder

A very simple spool holder made for printers on shelves, under hutches, etc. This can hold two spools, although it would be a tight fit (or you can just print it bigger). It can be fastened to a shelf one of two ways: (a) using the hole in the top, screw it into the shelf (wood shelf) or zip-tie it to the shelf (wire shelf), or (b) using the notches on the sides and hook on the top, tie it to the shelf, looping around the back (this is the method I used).