Hi Sticks
I think that everyone should do the same model not their own versions and formats as that will not give the constancy of the check it we all do our own thing!! Or maybe I am wrong?
I agree, we just need to decide what that same model is.
Now if someone can design the identical match on other than Fusion 360 to remove the CAD as suspect, and import a file into BS as a .step, .stl, .3mf, or other formats as a comparison on their printer that will answer the question of if it is a file source and slicing issue, or a printer issue.
Edited to add I just saw your test print and your ring still has the vertical ringing. Is that better than before you cleaned? Also try just printing the 90mm square rotated on the X/Y axis and see if it shows up there as well. My 40mm square barely had it, but the 90 there was no question.
However…I did come across another thread where someone was having print issues and found that they had slop in their Y axis - which I have as well - and the BL tech support solution was to place some PTFE tape in a .3mm thick layer on the inner shell of the extruder housing as a shim for the carbon rod bearing.
https://forum.bambulab.com/t/extruder-has-play-in-y-axis/2651/4
Now one person said it helped theirs, but the OP had another problem causing print problems and could not tell how much of a fix it was.
As fast as that thing moves, even though it is stupid light, I can see where that could become an issue with print quality with longer distances to accelerate and decelerate if it is moving on XY at the same time. It should also be overshooting corners on at least 1 axis.
Is this a real problem or just tolerance for movement I don’t know. Everything wears, and we have plastic riding on carbon fiber, not rollers like every other printer made. All of us are having this “ringing artifact” come up after having some hours on the printer, and some infills on large prints are pretty violent - if any of you printed the Christmas Cabin that BL sent out.
I’ll be going after my motherboard cooling fan today and also install the TL smoothers on the X and Y then reprint the 90mm test again. Then I’ll pull my print head apart and install the tape and see if that cures it.