Hey there!
I’m here with another question. This time about tiny holes that are appearing in my imported .obj mesh when I apply subdivisions to it in ZBrush. Any idea what’s causing this?
Additionally- when I create a displacement map in ZBrush and apply it to an object in Max it also creates tiny holes.
I’m assuming that these are things that I can avoid through the use of different settings etc…
I just don’t know which ones. 
Thanks!
Hi,
I’ve had this happen with Wings models.
Make a note of where the holes are appearing and take a really close look at those areas in another modeller. They can certainly happen if you import a model with n-gons, ZBrush will correct the n-gons on import but can leave these odd mesh problems anyway. I would guess that lots of things could cause similar problems, doubled edges, doubled points, severely non-planar polys. These are just guesses though, n-gons are what did it for me.
Like I said, take a good look at your model in another app and make sure it’s a good clean mesh with no serious modelling errors! - Baz
one thing you might want to check out, i imported entirely tri modelled game figure and got the smae problem when I tride to divide it, howver when I turned the smooth button off, the subdivision worked, although i had to work alot harder to get the mesh looking right, and zb really doesn’t like tris so it pinches alot, even on high poly levels.