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Hi there! I am a beginner in modeling. I am modeling a rapier these days. As it has a pretty complex shape, I create separate meshes for different parts of this object, UV unwrap them individually, and use Alt+J to merge them. To make the high poly, I use the subdivision modifier. However, as I try to bake its normal map in Substance Painter, some black serrations occur on edges where different meshes intersect, especially when cylinder-like meshes intersect with others. It basically looks like this:
It seems that when those objects intersect, some black things occur inside them, and they somehow bleeds out from those internal spaces, it looks like this:
Using the "antialiasing" option could partially fix this problem, but it still looks obvious when I get a bit closer. I am sure I made some mistakes, but I think I cannot find the solution independently. Can someone help me? Thanks!
Here is the link to my blender file:
https://drive.google.com/file/d/1xjHRPYuVlrTX_439BrMLL-amrLgA8D9p/view?usp=drive_link
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