Prusa spool holder

I was probably just being really picky, but I could not find any spool holders I really liked. And the ones I liked was not designed for my wooden prusa.

Most of the filament spools I have are 20 cm diameter, but I designed the holder so you can move one of the rod in if you have a smaller spool. It takes spools up to 100mm wide.

Note that there are different set of the holders. One named 5_5mm that fits my geeetech prusa i3 wood, and one named 8mm that fits the geeetech prusa i3 acrylic.