Shading artifacts caused by boolean modifier

Question

I tried applying a boolean modifier so I could make some holes inside a mesh, but the result was horrible shading. I've tried smooth lighting and an edge split modifier with sharp edges, but still nothing so far. I even added a new knife cut near the ends so it wouldn't be as noticeable. It's really bugging me, please help! Split concave edges just made a bunch of triangles with even worse shading.

https://blender.stackexchange.com/questions/13554/applied-boolean-modifier-leaving-shading-artifacts-with-flat-shading https://blender.stackexchange.com/questions/84455/smooth-shading-sub-surface-distorted-render — Duarte Farrajota Ramos, Mar 22 '18 at 00:34
That first link was pretty useful, but still doesn't solve my problem, as I already used the edge split modifier, and I can't make a triangle fan out of my cylinder. Also I didn't use the subsurface modifier — Dan, Mar 22 '18 at 07:32
A picture of the wireframe, or sample file will shed more light. One fears the boolean modifier may have naffed up your topology. — batFINGER, Mar 22 '18 at 09:29
@atek What would be the point in doing that? I already have an edge modifier, auto smoothing does nothing more than my sharp edges — Dan, Mar 22 '18 at 09:35
@batFINGER Yup! No doubt. The link didn't help much, though. Any solution? — Dan, Mar 22 '18 at 14:48
@DuarteFarrajotaRamos Well yeah but I needed those holes, how could I do it without booleans? — Dan, Mar 22 '18 at 14:49
Maybe rijig the question re the barrel and how to produce with good topo. — batFINGER, Mar 22 '18 at 15:09
Sorry, what? So I should re-make the barrel? Sure thing, but how? Without the boolean modifier it seems pretty hard — Dan, Mar 22 '18 at 15:19
@Dan Manually modelling it with proper topology. Have you checked the link? There even a specific example exactly for this case — Duarte Farrajota Ramos, Mar 22 '18 at 16:49

score -1 · Answer 1 · answered Mar 22 '18 at 00:46

-1

Try selecting your entire mesh in edit mode and hit [ctrl + n] to recalculate normals. This should fix the shading..

answered Mar 22 '18 at 00:46

MooKorea

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Already tried that like a million times, and it didn't work. These are not messy normal shadows, these are concave faces shadows – Dan Mar 22 '18 at 07:22

Shading artifacts caused by boolean modifier

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