idunnololzNov 11

Assembled my first 3D printer

https://lemmy.world/post/38636040

Show threadStinkyFingerItchyBumNov 11
What broke, why and how?
Show threadidunnololzNov 11

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.

Show threadDrinkyCrow

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.

Nov 11 at 6:31amWeb
Show threadidunnololzNov 11
Ah I see. I’m guessing I need a hardened nozzle since it’s CF. :/
Show threadBluewingNov 11

A hardened nozzle for sure.

You got this repair, you built this thing remember? You are the master of your printer.

Show threadidunnololzNov 11

I think I’m just going to buy the part from Prusa.

  • They appear to be out of stock for PC - CF
  • PC releases harmful fumes and needs to be ventilated. I’m going to find a venting solution eventually but not now.
  • The part is way cheaper than a spool of the filament, I can get a few in case they break. I know I can print a lot of parts with that same filament but I don’t really have an interest in printing with PC - CF.
Show threadidunnololzNov 12
Actually ended up printing the part with PETG. It worked and the issue is fixed (for now). Removing the broken part was a huge pain. I ended up using a drill and just drilling around where the nut is until I could fit tweezers onto the nut then I used the tweezers to keep the nut from moving and a screwdriver to loosen the nut until the part came out. All-in-all it was pretty time consuming and annoying. Hope I won’t have to do that again for a while.