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I recently installed the BigTreeTech SKR E3 mini V2.0 on my Ender 5 and I'm having some print quality problems even when using the same settings as before the board swap.

The edges are rough and curling and there is some bulging on the X and Y-axis. I printed a 20 mm cube and after measuring it, the middle is about 19.9 mm wide (on the X and Y-axis) but the top half and bottom half of those same sides measure up to be around 19.6 mm which is a pretty large difference when compared the near-perfect ones I used to achieve.

I've tried calibrating the E-steps and lowering the wall speed to 20 mm/s but I've had no luck. Is there anything I can do to fix it?

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    $\begingroup$ Try to calibrate acceleration and velocity. After changing the board this settings aren't the same as on default board. $\endgroup$
    – kosteklvp
    Sep 26 at 17:59
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This mostly happens if the belt has very little tension, this will be the issue 90%, if not please comment below, I'll give you other solutions.

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    $\begingroup$ I did tension the belt the best I could (which wasn't too much from the original) but I think it did help a little. I also took off the Hero Me fan duct I put on and I think that helped a ton too. I was having some clogging issues as well and when I disassembled the direct drive kit I had on, I found the fan duct mount was cracked and was leaning about 20° forward. Because of this, I think the fan duct was dragging way too low and touching the print when travelling fast and this caused a ton a problems. Thanks for all your help! $\endgroup$
    – Carter
    Aug 28 at 1:04

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