can I go from mesh back to shape?

[tsdexter]

Is there a way to go from a mesh like {triangles: [...], vertices: [...], normals: [...]} back to a shape I can then perform more operations on such as filleting?

[sgenoud]

Unfortunately no - this is a feature that is far from trivial - you need to guess the topology of a part from its mesh. If someone is interested in working in this, this post and its references might be a good starting point

[tsdexter]

Thanks, that's what I thought - just wanted to make sure I wasn't missing anything.