I broke one of the tension adjustment pulley thing. I loosened the belts to calibrate the y axis. When I was tightening the tension belt I absentmindedly tightened the bolt all the way and then some which broke something. Not sure what but turning that bolt now no longer moves the tension belt pulley. I can see the screw spinning so it’s not a stripped screw.
I’m going to look into what actually broke in a few days. Kind of exhausted from assembling the thing. As a result of this the top belt is a bit tight (its like 105HZ) but the prints come out ok-ish so I’m not in a rush to fix it.
On the chance that it helps you at all, I broke the same part.
For some reason Prusa loves using those slim squarenuts that tend to bind up due to how few threads they have. Chances are the nut in the pully bound up and stripped out the plastic so now it’s just spinning with the bolt.
There’s a few community made models on printables that replace the nut with threaded inserts. The part should be printed in pc-cf however, and that’s frequently out of stock it seems.
idunnololz@lemmy.world 2 months ago
I broke one of the tension adjustment pulley thing. I loosened the belts to calibrate the y axis. When I was tightening the tension belt I absentmindedly tightened the bolt all the way and then some which broke something. Not sure what but turning that bolt now no longer moves the tension belt pulley. I can see the screw spinning so it’s not a stripped screw.
I’m going to look into what actually broke in a few days. Kind of exhausted from assembling the thing. As a result of this the top belt is a bit tight (its like 105HZ) but the prints come out ok-ish so I’m not in a rush to fix it.
grue@lemmy.world 2 months ago
Obviously, your next print is a replacement tension adjustment pulley thing.
idunnololz@lemmy.world 2 months ago
I have some PETG filament on the way which os another reason why I haven’t looked at the issue yet. All I have is PLA at the moment.
deepfriedchril@lemmy.world 2 months ago
I don’t know how critical this part is but if it sees any kind of load, re-pint in abs/ASA or better. Petg and PLA creep under consent load.
DrinkyCrow@pawb.social 2 months ago
On the chance that it helps you at all, I broke the same part.
For some reason Prusa loves using those slim squarenuts that tend to bind up due to how few threads they have. Chances are the nut in the pully bound up and stripped out the plastic so now it’s just spinning with the bolt.
There’s a few community made models on printables that replace the nut with threaded inserts. The part should be printed in pc-cf however, and that’s frequently out of stock it seems.
idunnololz@lemmy.world 2 months ago
Ah I see. I’m guessing I need a hardened nozzle since it’s CF. :/
Bluewing@lemmy.world 2 months ago
A hardened nozzle for sure.
You got this repair, you built this thing remember? You are the master of your printer.