It's been a very long time since I touched it, but when I made these paper models I was pretty much writing matlab or python to output postscript code, and doing a puzzle to put it together, without ever looking at it as a 3d rendering.  I've wanted a better tool, and am trying out VPython, for whether it fits my needs.

There's at least one ugly bug in today's code, but I have a first pretty picture for what it can do.