a few faces are missing from my mesh imported from blender, and usually id turn on face orientation to check which faces might be facing the wrong way:
the entire mesh is completely fine in blender, and all normals are correct, but in roblox,
i see some faces missing with the other meshes as well
pls help is something wrong with my mesh, why are some faces missing
Sometimes this can happen with importing objects with complicated faces. What I do is spot the faces that are missing in studio in blender and then merge them with other ones. The faces should reappear after that, at the cost of quality, of course.
Assuming this is the correct reason, you actually don’t have to sacrifice anything - just triangulate your mesh before exporting. Complex n-gons don’t always triangulate well on Roblox’s end, so triangulating in your 3D software does the heavy lifting and keeps it accurate.
I got into detail in this thread as to why this happens:
