Sharp corners on small part being rounded
Part on left is from Ender 6 with default settings (80mm/s). Part on right is from VCore 400mm RatRig slowed down to 40mm/s. I've usually been printing at 250mm/s with the RatRig but I slowed it way way down trying to get rid of the rounding to no avail. I did the automatic input shaper calibration a while ago, but I will do it again if that would help. I believe the belts are the correct tightness, but I am open to opinions there as well. I've also attached an image of the settings from Cura (Ender 6) and Prusa (RatRig).
Any suggestions would be great. Thanks!
12 Replies
Here are dimensions of the part from data (in mm)
Something very frustrating about this problem is it doesn't seem to matter what speed/accel the machine is set to, the corners will get rounded. I've gone as low as 20mm/s and under 1000mm/s^2 and it has made absolutely zero difference with how the corners are rounded.
did you dial in your PA?
PA?
pressure advanced
i have, yes
lower your square corner velocity (in klipper), as default its on like 5 but that applies some rounding to sharp corners, the lower you go, the sharper, 2 or lower, zero even
this wont nessesarly make outside corners much sharper, as the nozzle is still round
prusaslicer also sets it under the printer_settings, but depending on other settings it will use klipper values regardless
i've actually gone down to 0.1 corner velocity and it made no difference whatsoever. keep in mind the ender 6 pictured has a 0.6mm nozzle same as the ratrig
i will play with the jerk settings
for the longest time, i thought the round corners were a result of the circular nozzle, as you said. that is, until i tried it on the ender 6 and the corners were much, much sharper
hmmmm thats a shame that didnt make any difference
could try disabling input shaper altogether, see if there is allot of smoothing in effect
yeah based on one of my cnc router via wincnc there is a setting called "smoothing" that has a large effect on artifacts like this and i wondered if there is an equivalent via ratos or prusa settings
i dont think there is a smoothing thing in the slicer but Klippers input shaper does have a smoothing effect, it will give you the "smoothing value" on your input shaper graphs