Spool Rack for Prusa MK2/x Multi-Material

The Prusa I3 Multi-material upgrade comes with parts and directions to build a very nice and functional 4-spool tray. However, it is intended to be placed in the space behind the Prusa printer, or on a shelf above it. I had neither, so the Prusa rack was only useful for parts - like the 16 608 bearings. I took those bearings and a couple of lengths of 20mm V-slot extrusion, a handful of printed parts and built -- a shelf ! OK, it's a "spool holder rack", but that's just a particular kind o