Replicator 2 Drive Arm Modification
thingiverse
This is a tweaked 'Spring-loaded Replicator 2 Drive Arm for a 3mm bearing'. I was experiencing intermittent problems with filament slightly thinner than usual slipping off the bearing. The only modification to the original design is to eliminate a small cone at the bottom of the bearing shaft so that the bearing sits further towards the drive block. It will boost friction on the bearing, but it has resolved my issue.
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