QU-BD Two-Up hot end tensioner hinge
thingiverse
this is the hinge that holds the bearing that goes against the filament and drive wheel. the original was too thin on the gear side and mine broke the first time i tried to tighten it uuuuhhggg i finally retired this printer, sent the paper board parts to my buddy and kept the motors and circuit for a new printer Instructions after the first day, when yours brake....... wire the thing together, and print 2 of these
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