stronger idler for mmu2s —

Founded stronger idler for mmu2s models & stl files for printing
MMU2S MK3S Extruder Idler with bolt
John Lafferty of Yellowbox Shed
MMU2S pulleybody mod
Mikael Djurfeldt
MMU2 Test Block
SpongyBob
MMU2 reset button
KmanSweden