I'm facing similar issue in Cura, Pin Hole and a slit which are optimised for printing without support are completely skipped during the slicing. I'm using the latest version, dont know what I'm missing here. Any help will be highly appreciated.
I have tried the model in other slicers, they can print w/o any issues.
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gr5 2,224
1) Please show a screenshot of the overhang. My understanding of what you mean may be completely different than reality.
2) It should show up if it is at least as thick as the layer height. If the entire overhang is between two slices then it won't show up. You can tweak the layer height so that one of the layers happens to hit the overhang - for example change layer height to be thinner than the overhang thickness.
3) It could also be related to the "normals" in the STL file. These tell cura which side of every triangle in the STL (that's all an STL contains is unordered triangles in random order) faces solid and which faces air. If your CAD gets that wrong then cura gets confused. This is particularly a problem in certain CAD programs such as sketchup and blender.
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