I printed out a 3D bust and the model came out with holes in the ears and underneath the collar of the shirt but the holes were not visible on the actual digital file when vieiwng it in ZBrush.
Before saving the file out for print I had hollowed the model out with masking then used panel loops to give the walls thickness but still you could not see any of the holes in the model.
Does anyone know why the model would have ended up printing out with holes if they were not visible on the model in ZBrush?