Smooth

I have the geometry, and it isn’t smooth. Applying a smooth modifier destroys the geometry. How can I fix this?

It is an SU import
walls.rar (174 KB)

I think that a small threshold is working.

You can also manually select all the polys on the curve and put them in the same smoothing group manually in Edit Poly.

Either a vertex weld or a Editnormal > reset normal, should fix SU geometry.

if you export that as an obj, it has a warning you have a rats nest, (Overlapping faces or vertices​) some nasty geo..

I imported the SU into MAX. I think I go it as a SKP

@glorybound I think that this is a good suggestion. Have you already tried it?