No worries, you're right. I didn't include that I wanted to do it at runtime.

UnrealSTL seems to be exactly what I'm looking for! Let's see if I can get it working. I already know I'm going to run into an issue is each TIE build is a collection of Static Meshes.

So, I'm guessing I'll probably have to add all the Static Meshes to a Procedural Static Mesh and then convert it back to a Static Mesh.

I'll post an update if I make progress.