Over-extrusion on corners
Im using the duet3d wifi with reprap marlin gcode flavor in cura and im getting over-extrusion on my corners/curves any help would be greatly appreciated.
think it might be an issue with duet using relative extrusion where as cura is giving absolute
You can set cura to use relative extrusion. It's a hidden setting by default, but it's in there if you search.
However, over extrusion on corners is probably more related to speed. Likely jerk.
Are you using custom jerk and acceleration settings in Cura?
What are your speed settings in config.g?
Added M82 (set to absolute) to the start code for cura and it has fixed it.
i am using a cnc router as a large 3dprinter and i have 2 steppers in the x axis and so im using the other extruder driver to run the other x stepper. Still need to play around with the acceleration as the table jerks around alot on short passes.
M566 X0 Y0 Z12 E120:0 ; Set maximum instantaneous speed changes (mm/min)
M203 X30000 Y30000 Z960 E1200:30000 ; Set maximum speeds (mm/min)
M201 X100 Y100 Z100 E100:100 ; Set accelerations (mm/s^2)
Got it printing for the first time today so now i just need to make fine calibrations.
Is that right that your X and Y jerk speeds are 0? That would lead to a complete stop and pause to change directions I think. That would be the cause of the over extrusion on corners.
Try a low value like 1 or 0.5 and see if that helps.
Also try increasing your extruder jerk and accelerations, say 600 jerk and 10000 accel.
That's a cool printer by the way. Definitely large format! How much Z height can you get on that?
BigPrinter last edited by BigPrinter
it has 150mm clearance.
the latest version of creo gives the ability to change to relative values for the extruder.
iv now run into different problems. found the extruder was getting much hotter than the target temperature. so i attempted to re-calibrate the thermistor with no luck. when turning on the heater to 180 it would shoot way past 180 and error out. Have ordered some better quality temp sensors and hopefully this will solve my celebration problem.
Have you run a PID tuning cycle on the heater yet?
thanks thats fixed that problem did the auto tuning
Have the corners improved?
Big improimprovement origanaly it was sewing out now there a little bit of overshoot?
It looks like it's over extruding. You can test by reducing your extruder 100% in the DWC during a print.
What is your extruder configuration?
It might help to go through a tuning guide, such as...
That will get your hardware parameters into accurate software settings.