Filament jamming after changing to a 0.25mm nozzle
I've changed from a 0.40mm nozzle to a 0.25mm following the instructions provided (Prusa i3 MK3S). I've spent many hours printing fine with the 0.40mm nozzle with minimal issues. Since the change, I've run into an issue where the first few layers are running normally but after a time the feeder starts to click and the filament stops feeding. I've noticed that unloading the filament that it is bulged out as if it was a rivet and can't be pushed through the hole. When I reload it, it runs fine for a while then starts to jam again.
I've monitored it and was wondering if anyone has advice on what I can try to tweak to make it work. I've basically used the presets in the PrusaSlicer 2.0.0
- 0.05mm ULTRADETAIL 0.25 nozzle MK3
- Generic PLA
- Original Prusa i3 MK3S 0.25 nozzle
Any suggestions would be appreciated. Also, a test part that is fairly small with lots of detail would be cool.
RE: Filament jamming after changing to a 0.25mm nozzle
First thing to try is simply slowing down. Dial speeds back to 50% using the front knob when the print hits the problem area and see if that fixes the problem. If so, your slicer settings are the fix. Are you printing with PLA by any chance? Try setting the Max volumetric speed under Filament settings-> Advanced to something lower than 15. Try 10 to start and see if that helps. You can reduce print speed settings, but that will slow everything down unnecessarily.
RE: Filament jamming after changing to a 0.25mm nozzle
Thanks for the quick reply bobstro.
I'm printing with PLA. I'll try your suggestion about the volumetric speed and then perhaps the speed later.
Just as a reference, most of the speeds for the current preset is around 20-30mm/sec. Does that sound right for a 0.25mm nozzle?
Thanks