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As you can see the left side of the edge came out jagged. The right side came out just fine. What happened to the left side?

I am using Ender 3 + BLTouch using Sunlu PLA+ with 200 °C hotend.

Left side

Right side

Here are my retraction settings (if that matters):

Retraction settings

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  • $\begingroup$ Do you mean the ringing? $\endgroup$
    – Lars Pötter
    Jul 6, 2021 at 21:40

2 Answers 2

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This may be due to uneven cooling. The part cooling fan only comes from one direction on the Ender 3 series of printers. You may be able to solve the issue by printing the walls from the outside in. If not, I recommend printing a fan shroud that has part cooling ducts on both sides; there are plenty of them on thingiverse.

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This was happened because I don't use support on the slope. After I use support the jagged edge is gone.

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