Thumbscrew for Prusa MMU2 Idler Tensioning
thingiverse
Replacing M3x30mm socket head cap screws with M3x40mm allows for easier tensioning of MMU2 idlers and opens up the unit's design. This modification involves swapping out existing screws, which are then secured in place using CA glue, while a friction fit holds the print firmly in position. Additional ridges on the side of the print provide reference points to ensure consistent preload is achieved on the springs, making it possible to maintain precise tension without needing an Allen key.
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