Tetrahedron
Inverse Tetrahedron
Default size for the meshes (upon being loaded into studio) is a convienent [1 1 1]
Best part is the perfect decomposition geometry (It’s a simple shape) so if you want to use this in some build of sorts the collision won’t be all messed up
Edit: Decided I’d also add that I’m allowing ROBLOX to define the UVs (so materials look good on it)