[Solved] Gears slipping during printing and hard to move by hand.
I've been using my mini for almost two months now with zero issues but all of a sudden the gears started slipping without making any changes. This happens during printing and it slips like 15% of the printing time. I changed the PTFE tube but the issue persisted...so I've checked the gears. I found out that it's very hard to move in one direction (toward extruder has a lot of friction and very hard to move by hand) but moves easily in the other way (unloading filament) so I took it apart and even with nothing to guide it's still hard to rotate the gears in one direction.
Anyone else experienced something similar to this? I really have no clue what is going on.
Thanks, everyone for your suggestions! (not really) 🤣
After 3 days I finally managed to get to the bottom of it, it was the PTFE Tube installed by Prusa, quite a bit shorter than what was actually required. No idea how it worked so far but yeah changing it solved the issue.
Edit: I also have no clue why the motor gears are hard to move in one direction but as long as it works its all good.