Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Adjustable IR Sensor Chimney for Prusa i3 MK3s with MMU2s

by mordiev Sep 8, 2019
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Moar pics will follow! :) So far this mod combined with the pass through Extruder mount have solved two occasional problems I used to have. The IR sensor would somehow get out of position and cause some MMU failed to load errors. And on occasion filament would get stuck before it could load down to the bondtech gears. That would cause the MMU to "Mouse bite" the filament so it couldn't load anymore then it would give me the MMU failed to load error. Both problems solved. I think. Still testing. I have a few more mods in the works that I will share soon.

Ah! The extra pics really helped, I get the 'spring' now. Good luck with it, I'll be watching.