I want to get an outline effect by using a mesh with inverted normals wrapped around another one. instead of opening modelling software to flip the mesh normals I took the easy route and flipped its direction vectors.
I noticed that if I weld the outer part to the inner part and change inner part’s cframe, the outer part doesn’t stay inverted an reverts back to normal. on the other hand if I reverse the normals of the outer part after cframing it, the inner part gets inverted too. how do I weld them together while keeping one inverted from the other?
It’s not intended for meshpart inversion to occur this way to begin with, even though it has existed forever and probably won’t get patched out, it isn’t official functionality. Maybe something about the parts being in an assembly configuration causes the inversion to occur to all parts?
There may be some hacky workaround like not welding them, anchoring the inverted meshpart, and assigning the cframe per render step to the cframe of your target part, but your best bet if you really need it to be welded is to make an additional inverted mesh. Any other way could be subject to breaking with future updates, unless they make this an intended feature.