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AutoCAD model to Zbrush Issue

ZBrush Usage Questions
#1

When I draw either a solid model or mesh in AutoCAD and open it in 3DS Max, it is fine. I GoZ it from 3DS Max to Zbrush and it looks fine but only has points at major intersections. If I try to subdivide it, totally deforms the model. I am a total newbie to Zbrush so I am sure it is a simple step I am missing. How do I add a finer set of polygons? Should this be done in 3DS Max or is there a way to do it in Zbrush? I have a lot of models that I have drawn over the years so it would be great to learn how to import them.

Thanks for any insight you may provide!

#2

It all depends on the geo.
zbrush works with SDS so you’ll want to make sure you have a model that supports that type of modeling. Quads.

Uploading an image or 2 never hurts to help illustrate your problem.

#3

Thank you. I figured out what I was doing wrong. Once I G0Z-ed the model, I needed to change to SUV mode before subdividing.
Being a total newbie at this type of modelling, any help is a wonderful thing.
Thanks for taking time to respond!