Spool overhead hanger
thingiverse
I have a shelf above my workspace and thought that I could hang the spools from that. For the small spools that come with my Micro3D printer they work very well. Instructions The rod is an M4 or 3/16" flat head screw. I use a finishing washer on the head end and a nylon insert wingnut on the other. The nylon insert lets you adjust the tension on the reel so it isn't too tight or loose.
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