The problem with ming was trivial and stupid. Here’s an animation. This is the last piece of 0.4 left to work out, so barring any big bugs the next version of Pantograph should be out some time this weekend.
I’ve been trying to render a larger file with around 160,000 triangles, and there seems to be a memory hole. Things have gotten a lot faster, but it eats up 8GB way too fast.