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I have a problem with the Bevel tool. I'm fairly new to Blender and don't know if I'm misunderstanding how the Tool works or just missing a point.

I have the following (simplest example) blend file :

This Object was created by joining two objects of different materials (Dielectric (green) and Conductor (blue)). After setting those materials and joining the Objects i removed the doubled Vertices. The result is the provided .blend file.

On this prepared object i want to apply a beveling with Offset:0.2 , Segments: 4 and Profile:0.5 .

This is where i get confused. Applying the Bevel with above parameters works as expected every where BUT the Top Edges of the middle part (middle part refers to the 3 faces in x-z-plane adjacent to the top plane between the 2 cuboid like bars).

My question is now : Why does it not work ?

After a while i tried "subdividing" the top face like the, above referred to as x-z-plane faces, and it worked for the middle part.

From this i concluded that:

The Bevel tool only works for edges that exactly share 2 Vertices.

Reason: The 3 faces define their own vertices ON the already existing edge of the top face. In this way only the left and right face share one vertex with the top face. This does not fulfill the above condition and hence the beveling does not work.

Am I right with that Conclusion ?

Thanks for all help in advance.

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If I've correctly understood your question, here is an answer. Actually you can't automatically create an edge loops (and therefore a bevel) through a ngon, because as it's a surface with more than 4 vertices, by definition it can't tell what other edge it is supposed to cut through.

enter image description here enter image description here

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  • $\begingroup$ Which edge do you mean by "central edge" ? The "long" edge of the top face ? $\endgroup$
    – Chgad
    Jan 24, 2019 at 11:06
  • $\begingroup$ you could delete the 2 parallel central edges, except if you need them later, but for your current shape they seem useless $\endgroup$
    – moonboots
    Jan 24, 2019 at 11:07
  • $\begingroup$ Just to be sure : This supports my Hypothesis that the Bevel tool only works for edges which share exactly 2 vertices. Correct ? $\endgroup$
    – Chgad
    Jan 24, 2019 at 11:22
  • $\begingroup$ I'm not sure what you mean, as I said, you can't automatically create an edge loops (and therefore a bevel) through a ngon, because as it's a surface with more than 4 vertices, by definition it can't tell what other edge it is supposed to cut through. $\endgroup$
    – moonboots
    Jan 24, 2019 at 11:38
  • $\begingroup$ I've added an explanation of what I meant, if it helps $\endgroup$
    – moonboots
    Jan 24, 2019 at 12:52

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