I really liked mhoyt idea of transforming the extruder into a Flux Capacitor but I wanted to make an MMU version of it. For people that don't have an MMU, you should check out the original design (https://www.thingiverse.com/thing:2788718).

Now, you just need to make sure to never exceed 55 revolutions per minute. You don't want to send you printer back to the future. 8)

In action: https://youtu.be/oDZYySVMuE4

Random comments:

• You'll need an 8x2mm magnet, or adjust the "magnet adapter" height if you have a 1mm or 3mm.
• No support needed but some pieces will have to be repositioned on the bed.
• For the FluxBackground, I strongly suggest to starts the print with the letters. You'll get 'bolder' letters that way.
• Works with R3 revision or MK3S.

Prusa

i3 MK3 MMU 2

No

No

0.2

15