I have quite a bit of experience with this as well.....but mostly with urethane resins. I was once very involved with bronze casting....which is a whole other level. I was a 3D modeler for video games since 1996.....having worked on games like Coolboarders and Auto Assault. The fun aspect was I was able to take models I had in 3D and transfer them to physical models. Here's my old web site on one.....it really needs to be updated......so bear that in mind.

http://sites.google.com/site/corvairmodelkitproject/

Best

Skitt. (Shawn)