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enter image description here

I want this edge to be hard, but when I try to use the bevel modifier or edge crease, this problem occurs. Also when I tried to add support edges, it still looks bad and creates other unwanted problems with the mesh.

Can you help me fix this?

EDIT: Topology

enter image description here

EDIT2: Curved Part

enter image description here

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  • $\begingroup$ The topology is crucial for subdivision. You need to show it if you want help with it. $\endgroup$
    – Jackdaw
    Commented Feb 19, 2019 at 20:37
  • $\begingroup$ I just added a picture $\endgroup$ Commented Feb 19, 2019 at 20:40

2 Answers 2

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What you want to do is switch the Outer Miter from Sharp to Arc. This will solve your problem without having to bevel any additional edges that might break curvature.

enter image description here

If you want to end up with geometry that's still all quads, you need manually triangulate the pre-bevel quads that buttress the bevel-weighted corners, as follows:

enter image description here

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    $\begingroup$ Thank you for your help, this is helpful :) $\endgroup$ Commented Feb 19, 2019 at 23:45
  • $\begingroup$ You're welcome. I encourage you to check out this thread: devtalk.blender.org/t/gsoc-2018-bevel-improvements/440/241 There is a very active discussion going on with Howard T, the guy responsible for the bevel tool, and lots of changes are being tested out right now. $\endgroup$
    – Rekov
    Commented Feb 19, 2019 at 23:51
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You can make the bevel weights overshoot the corner by one edge. This depends on your surrounding topology. enter image description here

If they are flat then they can handle to extra bad topology but if they are curved and soft it a different matter. You will then need a denser mesh to work with and you need to do all support edges by hand. In this example I applied some levels of subdivision and used creasing to adjust the sharpness of the edges. You will sometimes need to retopo and shrinkwrap your mesh on a smooth surface to get the edges where you need them. It's laborious but the results can be fantastic.

enter image description here

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  • $\begingroup$ I added a picture of the topology there, it's not flat at all :/ $\endgroup$ Commented Feb 19, 2019 at 21:16

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