Whats wrong with the shading with the new model?

The old model [far one] looks ok. But the new model [near one] looks weird…

What do you mean by old and new here ? If they are suppossed the same then why new ?? And from where ???

You may have to elaborate this to get a more suited answer.

its not the same model. im making the new one a bit different, going off the dimensions of the old model.

the old model isnt mine.

It’s a bit difficult for us to give you a correct answer, because we cannot check the geometry just by looking at a picture… But I’d check for duplicated vertices and faces, custom normals data, and mesh continuity. Also, if needed, assign smooth groups to those problematic parts.

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Ohh… so you are…

…and now you asking why it is different ??

If you are asking about the nonplanar part in your model (top right)… then the answer is simply: you did not made it planar…

You may have to elaborate more about what detail you are asking to get a more suited answer.

custom normals data was the problem.

thanks!