3D printing forums

It's because the "bad" area is on an overhang and not well supported.  It kind of pulls upwards when printed because the filament, while liquid, is like shrinking snot - like a liquid rubber band - and pulling inward makes the corner curl upwards just before solidifying and then the next layer the nozzle is pushing down and reheating it.  If it was supported better it wouldn't curl up.   You could change to normal support and that would help but the print will probably take longer.   I'm confused why you have the 4 thinner parts printing at the same time as the larger parts - isn't it nearly impossible to separate all those parts?  why not print the thin parts separately - maybe even a different print?  I tried turning the larger 2 parts as shown to see if it would save time but it doesn't (usually lower profile is faster and uses less filament but not this time).  I think you may like the "look" of the part better if you print it as shown although you might not like the top layers as you will get the pyramid-stair-step look near the top.  You can reduce that a bit with variable layer height.   Have you considered using a breakaway support or dissolvable support?  according to ultimaker's support pages, petg is compatible with PVA and also breakaway.  You have an expensive S3 printer, you might want to take advantage of this and not have to spend lots of time removing supports.  

Hey @ELDANS,   Thanks for sharing your files.  Your Benchy is not the project file I was looking for, but your MicroAmpCorners is! You seem to be running into the problem that's mentioned here: https://github.com/Ultimaker/Cura/issues/14728 That's good news for us because we can now easily reproduce the issue, and learned that people are running into this by accident. Unfortunately, that also means that there is no easy workaround, yet.  I'll bring it up with the team to see if they can fix it or provide a workaround. 

yes, i cannot follow what this new firmware is doing, the lights are now just green, the second extruder has no lights even when its hot from the bed probing. The head parks on the right now after loading material, but on the left overwise. Doesn't seem like these are intended changes ??

Did you also enable jerk control?

Hey @HFJuli,   I just tested the model mentioned above and it seems to work for me:   The issue was resolved during the Beta period, so the fix is not present in the Alpha or Beta.  Are you sure you are on 5.3 stable? You can download it here: https://github.com/Ultimaker/Cura/releases/tag/5.3.0