Combined Meshes and Semi-Transparent Shader

Hello! I’m working on an AR-application where you can create 3D-objects by placing multiple 3D-shapes. I combine the meshes of the objects with mesh.CombineMeshes(). The problem I have is, that the inner faces are not cut out. I found this post about the same problem, but there was no answer yet.

The inner faces are a problem because they cause problems when I try to use 191845-screenshot-2022-01-28-104922.jpg

So my question is: Is there a way to cut out the inner faces OR do you know how to edit the custom shader to render my objects correctly?

My workaround is now that I change the material to an opaque with standard shader when nothing is inside and to the semi-transparent shader with transparent color when something is inside. The inner faces of the combined mesh still looks wierd and I would be very thankful if you could give me some tipps on that :slight_smile: