Side-mounted Spool Holder for the Original Prusa i3 MK2

thingiverse

I really disliked the original two-piece spool holder on the Original Prusa i3 MK2, and after printing a slightly different design with a filament guide, I decided that mounting the spool on top of the frame just didn't sit right with me. The PSU is a metal box made from reasonably thick material, screwed into both the base and upright frame of the printer, so I decided to use it as my mounting point. The way of fastening the mount plates I used isn't ideal, because it's quite fiddly to apply, but it holds fine for a 1 Kg spool without any doubts. You just have to be careful not to lose any of the H-shaped pegs inside the PSU while putting the mount plates into place. **Warning:** Before printing this design, please check that your PSU looks exactly like the one in the pictures. The spool holder uses the cooling cutouts in the PSU for mounting, and I'm unsure if all MK2s have the same PSU.