I created a simple arch bridge in Blender and it looks fine in blender but if I import the blend file into unity, some of the faces don't render at all. Can someone check my model and tell me where I'm going wrong? I have recalculated the normals, and I was not using any modifiers when I created the mesh. Any insight would be appreciated. The blend file is here
https://www.dropbox.com/s/qw3h9ueqfm6vl9o/arch.blend?dl=1
the mesh looks like this in Unity:
https://www.dropbox.com/s/tprxy8psyupkt51/2017-01-28.png?dl=0
Remove Doubles
. Then recalculate the normals again. $\endgroup$ – r3mainer Jan 28 '17 at 21:29