Mosaic Filament Drive Mounted Guide
by andrewbarton, published
After using my Mosaic 1 printer for about 6 months, my filament drive wore out. This was caused by my PTFE filament guide not being aligned perpendicular to the filament drive. Long printing sessions wore a groove into the filament drive and eventually the filament was forced to the side of the drive gear. The symptom of this problem was a slow degradation of grip on the filament resulting in inconsistent printing.
I tried adding a frame mounted filament guide (http://www.thingiverse.com/thing:23748), but this was not sufficient to keep the PTFE guide tube straight over the filament drive.
This part has solved my problem.
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Print the guide. Remove the filament drive tensioning bold. Insert the guide and re-apply the bold. Thread the PTFE guide tube through the guide.