MMU2 filament control (attempt 1)

thingiverse

This is my basic filament control solution for the Prusa MMU2. Video of the whole thing working here: https://youtu.be/4TCmkPbJzV0 I'm still working on it, but it seems to work for now. Print the base (I just used PLA with 20% infill, 3 perimeters). Print 5 of the wheels, and install 5 standard 608 skate bearings, and an 8mm shaft (tube, steel, anything). These bearings work well, but any will do: http://a.co/d/igqQYUL Install 6 pieces of 2.5mm thick acrylic, 9" x 8" (I got mine at home depot, it's standard stuff in the window section, $18). The dimensions aren't critical. I used 9x8 because I could cut 6 pieces out of one 18"x24" standard sized sheet. (In the video above, I've got smaller taped together sheets of acrylic, replace later by the 9"x8" panes) I use the ptfe block to control the short PTFE tubes from the back of the MMU2 (as pictured). I leave a gap between there and the filament control base so I can grab/manipulate filament. As you can see in here (https://youtu.be/kHRZ-uf2_yw), that doesn't work well for flex filament, and you'll need longer PTFE. Still a work in progress. Specifically, there is no provision for attaching it to the table! For now I just tape it down. I'm also considering redesigning it so it hangs below the table. Ask questions here and I'll try to improve these directions. Video of a filament load, as requested: https://youtu.be/XDSXqd8zcjk