After reading through the above post, it seemed likely my 2209 drivers were the issue, so I replaced them with a pair of BTT TMC5160 Plus. I got those installed and configured today, and the problem is still present.
My printer is square, or as close as I can get it mechanically. I’ve been trying to print the CaliLantern so I can do Klipper skew correction, but it prints so poorly due to the slant it’s impossible to measure.
The slant on mine was in the vertical axis. Your print looks like it returns to the same X-Y coordinate on each layer. I’m not sure if this is the same issue. It could also be an error in one of the axis rotation distance in the config file.
Sorry, the photo orientation isn’t ideal. Mine is also slanted in the vertical direction. I edited the OP with a rotated image. Each layer gets a tiny amount closer to the front right corner of the print bed.
I just swapped the cables from my steppers to my Manta and updated config as appropriate to see if it would make any difference to the slant. Instead of slanting toward the front right, it slants toward the back right. I think this points to a board issue. Going to try moving my X and Y to different motor slots on the board. Currently have them in 1 & 2.
This just screams to me that your Y axis isn’t square. Are you super duper sure if you measure from the front and the rear it’s the same? And diagonal?
This seems to confirm there’s something wrong with the board. I’m not sure if slots 6 and 7 are issue-free, or if they’re just better than slots 1 and 2.
Currently printing the CaliLantern to see how that turns out. It’s previously been very slanted. It seems the more complex the model, the more it slants.
I was looking at your pictures wrong. So it’s slanting as it increases in Z right? If you print a big square like 100x100 but only like 1mm tall are it’s XY corners square? Because this looks like your bed is not going perfectly vertical, like it’s going down at a slant(which based on the NG design could be caused by the XY not being square also) Weird that swapping to different board headers helped but I still wouldn’t rule out a physical issue.
X/y corners are square. Printer frame is about as square as I can get it. I’ve been battling this issue for months, so I’ve double, triple, and quadruple checked just about everything. I’m very confident it’s the motherboard after these tests. Switching the connections to slots 1 and 2 changed it from a front right slant to a back right slant. Moving to slots 6 and 7 reduced the slant by a factor of 3-4. I’ve printed probably 20 cubes with the original configuration, so I know the slant was consistent and repeatable - until I started changing the motherboard motor slots.
