Ragged Edges in Slicer Preview

[MC_Thunder]

Hello all! I’m pretty new to FDM printing, so obviously I’m still trying to figure things out here. I haven’t had a problem I couldn’t solve via research until this. I’m printing a statue, and in the Orca Slicer Preview, the jacket looks like it’s been eaten by moths. In my research, I learned about turning the Wall Generator to Arachne, which does appear to patch most of the ragged holes, but the edges are still frayed… I thought maybe it was just too thin for the .4 nozzle to handle well, but switching over to the .2 nozzle pretty much gave the same results. Can someone explain to me why this is happening, and maybe how to resolve it? Thank you!

Before Arachne

After

[Bullocks]

Is that geometry thin, like a piece of paper? You can use the measure tool to try to get an exact number. If its below 1x wall’s width, you’re gonna have a hard time printing it, and this is the sort of thing the slicer does while struggling with that task.

This applies to the entire model, but you can influence this to be more printable by adding Quality → Precision → XY Contour Compensation. Positive values “fatten” the xy boundaries, negative ones will “thin” them. Again, this impacts the whole model but a lot of the time you won’t notice a small bump like 0.025 everywhere that allows the thin piece to become printable.