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enter image description here

when I import OBJ file. The edge becomes 'strong'. some edges are good, but most of them are like this in picture.

susu
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garyyang4019
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  • I'm not sure what you're looking for, but what you're seeing is edges that are marked "sharp", If you want them gone, select the whole mesh (in edit mode - edge select), right click, and pick "clear sharp". – Christopher Bennett Sep 09 '20 at 14:33
  • https://blender.stackexchange.com/questions/69533 https://blender.stackexchange.com/questions/84961 – Duarte Farrajota Ramos Sep 09 '20 at 16:16

1 Answers1

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These light blue edges are marked sharp.

Sharp edges

It means they will be sharp when you Shade Smooth the object and Auto Smooth the Normals

Smooth and Autosmooth

You can remove them by selecting them, pressing Right mouse button and selecting Clear Sharp

enter image description here

Joonas
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