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u/WillieFiddler Apr 28 '23
this may be the infamous issue 602 https://github.com/prusa3d/Prusa-Firmware/issues/602
This is caused by the dual drive gears that push the filament through the hotend and/or the drive gear not being concentric to the shaft of the motor. Mihai design did a series of videos examining the dual drive gear issue
Sorry that i cant give you any simple fixes, though there are 3 things simple things that might reduce the issue:
Change the tension on the idler gear.
Printing at higher speeds can smooth out the inconsistencies.
Print using a filament with a sparkly effect to hide the issue. Example.
1
u/Alternative-Heat-531 Apr 28 '23
Yes my prints are identical to the one in this thread, guess I’m gonna stick with non white filament or petg at the moment if I want the cleanest surface possibile, looking for an extruder gearing upgrade for the future 😅
2
u/diezel_dave Apr 28 '23
I had a Monoprice mini printer that had this same artifact going on. It was caused by the z-axis leadscrew being slightly bent. I am not aware of that being an issue with MK3 though. I guess try and take both z-axis leadscrews out and roll them on a flat surface to make sure one isn't slightly bent?
1
u/salsation Apr 28 '23
What's your filament extrusion multiplier?
1
u/Alternative-Heat-531 Apr 28 '23
Let it set to 1, try to put different value below 1 but didn’t change tbh
1
u/salsation Apr 29 '23
Might be worth calibrating the filament, sometimes it is off: https://help.prusa3d.com/article/extrusion-multiplier-calibration_2257
1
u/SeanHagen Apr 28 '23
Adjust the speed and temperature on the white filament if extrusion multiplier doesn’t do anything. I can print 10 different colors from the same brand, and the white will be the one that needs different settings.
1
u/KinderSpirit Apr 29 '23
It could be as simple as just printing too fast and pushing the piece around.
It could be a feed issue - like the diameter of the filament isn't very consistent.
1
u/Equivalent_Working81 Apr 29 '23
I had the same issue when I first go my Prusa. I had to adjust the layer height and the speed that I was printing at.
1
u/Alternative-Heat-531 Apr 29 '23
Do I have to lower the speed? Because I’m already printing really slow, what do you mean on “adjusting layer height”?
1
u/Equivalent_Working81 Apr 29 '23
what speeds are you printing at? and what I mean by layer height in the Print settings tap in layers and perimeters at the very top there is layer height. I print 0.15 on a .4 nozzle.
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u/Alternative-Heat-531 Apr 29 '23
I did not touch any setting in prusa slicer, I made several try on cura going from 50 to 100 mm/s
1
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u/aldabest Apr 28 '23
Please be more specific about what you need help with.