Extruder motor shaft broke
Posted: Wed Jan 20, 2016 11:07 pm
How does this even happen? (That's an honest/serious question.)
I had a print of about 3 hours stop half-way through. Figured it was a clog or filament jam of some sort. Took the filament out, checked the gear for blockages -- PETg often seems to get a stripped & bent wad right at the gear for me -- and it was OK. Got things back up to temperature, tried to insert filament -- and it wasn't gripping. Further inspection revealed it wasn't turning -- though the motor was humming as if it was.
So, I checked this forum
and found write-ups on the pinion. My drive gear was spinning freely in my hand, but did seem to catch occasionally, so I took it apart. This is what I found:
I don't feel like I'm abusing this poor machine, but... 
I had a print of about 3 hours stop half-way through. Figured it was a clog or filament jam of some sort. Took the filament out, checked the gear for blockages -- PETg often seems to get a stripped & bent wad right at the gear for me -- and it was OK. Got things back up to temperature, tried to insert filament -- and it wasn't gripping. Further inspection revealed it wasn't turning -- though the motor was humming as if it was.
So, I checked this forum
and found write-ups on the pinion. My drive gear was spinning freely in my hand, but did seem to catch occasionally, so I took it apart. This is what I found:
- On the positive side, my pinion isn't worn...
