Bad side effect after bevel

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Why this happening ?
And
How to solve it ?
or
How I should generate this bevel in this case ?

thanks!
J.

extrude,poly extrude,poly bevel.

Attachments:
question.hipnc (919.8 KB)
why_like_this.jpg (27.0 KB)

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What “this” are you referring to? Do you mean the unusual shading? If so, does it look that way in the Rendering tab, or just in the viewport? If it looks the same in the Rendering tab, there's probably something off about the geometry or normals. You can recompute normals with a Facet SOP if that's the case. If it only looks that way in the viewport, I wouldn't worry too much about it, since your final renders will be fine, though applying a Divide SOP with convexing and max edges set to 3 (triangulating the geometry) might make a difference.
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James_Burg
Why this happening ?
And
How to solve it ?
or
How I should generate this bevel in this case ?

thanks!
J.

extrude,poly extrude,poly bevel.

Likely, you have the face shared with the extruded sides. This is causing normals from the side edges to be shared with the face. If you use the facet SOP to “cusp” sides, this should improve your geometry… Or just unique points between the face and the edges another way.
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Thank you Mark and ndickson !
Its geometry issue not a viewport one.

Placed a fix .

Attachments:
like_this.jpg (58.2 KB)
question_101_fix.hipnc (1001.0 KB)

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