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I was browsing the internet, and saw this triangle shape around a cylinder shape. I use a Boolean modifier to make cuts around the shape, and get bad shading because its triangles. So what method could I use to make this section indicated in Red.

I did the pattern of triangles, then added solidify modifier. I try Boolean, but Blender crashes.

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    $\begingroup$ Make it flat, array and simple deform modifier with bend option, then weld. $\endgroup$
    – lemon
    Commented Feb 14 at 10:31
  • $\begingroup$ There's also a procedural material tutorial from Ryan King which might give you the result you want and doesn't require a high poly count: youtu.be/78fay5ZVACs. $\endgroup$
    – John Eason
    Commented Feb 14 at 10:47

1 Answer 1

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Create a 6 vertex circle, Fill Type > Triangle Fans, add two triangles on its right:

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Select all, inset the individual faces (ii) and remove the inset faces, add some loopcuts:

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Array on X and Z, don't forget to enable the Merge option:

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Give it a Simple Deform modifier (Bend mode, on Z, a bit more than 360°), also a Weld modifier so that the first and last instance merge:

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Put a Solidify modifier before the Weld to give thickness to the object, shade smooth and auto smooth to get a good shading:

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  • $\begingroup$ Mega Thanks Moonboots! $\endgroup$
    – blender breath
    Commented Feb 15 at 0:40

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