ZBrushCentral

Maya to zbrush one face missing

In Maya 2012 have an object, use goz to send the object to zbrush.
Object arrives ok, but, one of the polygon faces is missing.
If I go to display properties and check double sided the face appears.
Have noticed when sent back to Maya this one polygon renders slightly diffent ( slight shading difference)
Not a major problem but a pain the ass.
Thank you.

Some of your normals are off. They’re facing the wrong way and need to be readjusted. It’s been forever since I’ve used Maya so I don’t remember how to do it but you can recalculate the outside of your normals. This should correctly face them to the outside of your model. Right now you have at least one normal facing the inside. This is also causing the rendering issue on that face.

Thank you, thought the same, but no matter what to that face ( using various normal setttinge) in Maya problem
still exists.
Thank you for your time, 'preciate it.

Sounds like you may have to dig a little deeper. Try running Mesh/Cleanup with Lamina faces and Nonmanifold geometry checked. If you check Select matching polygons, it will select any areas with issues. Then you can go in an see if you have extra faces or verts. You can also try merging verts in the area.

also, to view your normals: sekect Display/Polygons/Custom Polygon Display Options. In this menu check face normals and Apply. If nomals are too large or small you can adjust normal size. Now you will be able to see your normals and direction. Select the face with the wrong normal and go to Normal/Reverse