Weird Ripples on My Maestro rrf3 Conversion
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Struggling with VFA on a Duet wifi 1.04, titan aero and .9 steppers on X/Y myself running rrf 3
also trying to figure out my horizontal variation - may be temp related so i'm looking at my heatbed (no fan was on for this print) but you can clearly see all my vfa - it just looks weird because of the shape
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@Phaedrux I don't know as when I installed the Maestro, I went to rrf3.
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@4lathe I'd be curious to see if there is any difference if you went down to 2.03.
It shouldn't be too difficult. Make a backup of your config. Grab a config set from the configurator, and upload the zip file. If there's no difference, easy enough to swap back.
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@Phaedrux Ill try it.
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Just throwing this out there... Is it possible that the pulse pattern matches up to the heat cycle on the hotend? Is this a E3d V6 hotend?
Maybe the brief micro changes in the hotend temp while extruding causes this result you are seeing?
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Interesting thought. The heat parameters were new for the maestro from those when I was running marlin or klipper on this machine. Way to test??
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@4lathe Have you done a PID tuning?
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No I just copied parameters from my e3dv6 on my delta. Ill do that first but is there any way to test the pulsing issue?
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@4lathe Just by watching the temp reported. Is it stable? A small variation is to be expected. With a PT100 sensor and a sillicone block sock my hotend temp varies about +-0.5c. How much does yours vary?
Still, running a PID tune is quick and will eliminate it as a variable altogether.
Will be interesting to see the difference in results.
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PID tuned. Temp during printing did not vary by more than .1deg. They look the same.
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Looks worse on y than x?
re tension the bed wheel carriage?
I know you said the stock board didn't produce this, but perhaps something has changed mechanically since then? Do you have to original board to test with to compare? Tedious, but would help narrow things down with certainty.
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@Phaedrux yes its always worse on y than x. The ripples are about 2mm on y and that distance doesn't really vary with speed from 20-70mm/s. Unfortunately I tossed the old board. I can try messing with y tension.
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Well you could swap drivers for x and y and if it follows the driver.
But I'm starting to lean towards mechanical
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Increased belt tension on x and y. Bottom section is 20mm/s and upper layers at 100mm/s. I know part of it is the sheen, but it almost goes away entirely at 100.
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@Phaedrux any thoughts on why high speed would make the effect almost vanish? I was reading the other thread going on about this. Cant be his Bowden as my setup is bmg/v6 direct and it dies the same thing as his.
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@4lathe said in Weird Ripples on My Maestro rrf3 Conversion:
any thoughts on why high speed would make the effect almost vanish?
Just some vague ideas I'm not sure have any relevance to reality.
If it's a step pulse issue, maybe at the high speeds whatever noise gets smoothed out? But that's out of my realm of understanding and I'm just grasping at straws there.
Or maybe it's a mechanical issue that gets smoothed out at higher speeds.
Or maybe it's related to the molten filament getting drawn out more by the higher speed and solidifying to a smoother appearance where the slower speeds allowed the molten filament to cool and retain the shape pattern.
Total and complete baseless speculation.
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Hopefully i'm not distracting from main discussion, but i'm having similar issue with .9 degree steppers on a HEVO with titan aero direct drive.
I recently bumped my X/Y steppers to 85% max rating and my printer is crazy noisy now, but my VFA has really gone down.
To verify i'm not just seeing crap, i'm going to run a test again right now with high rating and lower and see if it proves it out... changed so many settings i'm not even sure anymore.
curious if running at 100mm/s keeps the motors out of quiet mode and changes how they algorithm works - as that may explain why super high power ratings may do something similar.
