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I have a model that has an extremely thin place, only one perimeter in width. Slicer moves in the way marked with the red line, creating a join in the very middle of the very visible flat pane. I marked it with a red line on the first picture.

I would prefer if the printer would print the exterior wall first, and leave any joining marks on the interior only, as marked with a green line below. Is there a way to achieve this?

I am using PrusaSlicer and Orca, but I'm ready to try other slicers if they can do it.

Model is cable-cover.stl from the Galileo2 project. Older version, because I have another issue with the current one.

What I don't like

What I want

Note: For Cura, Orca and Prusa, Outer / Inner wall is a different distinction. On the pictures, all orange ones are classified as outer walls, and yellow ones are inner. The inner-outer or outer-inner distinction does not change the effect. That's why I am using "exterior wall" and not "outer wall" in my question.

Greenonline
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Mołot
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1 Answers1

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It's not possible to have such fine control over the path generation, as far as I know. (Slicers don't really know what your “exterior wall” is.) In order to get a seamless junction you will need to fit in two extrusion widths, which you could do by either:

  • Slightly thicken that part of the model on the inside (if this will not create clearance issues). You can insert boxes in PrusaSlicer which might be able to do it.

  • Use a smaller nozzle.

Kevin Reid
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