There are some very good threads in regards to mold making in the Pylon World Scale Racing forums.
The first thread can be seen at:
http://www.rcuniverse.com/showthread...66&forumid=113
The threads revolve on the mold making, and layup of a wing and fuze for a Tsunami racing plane.
There are a couple other parts to the thread, so search for Tsunami, and you can see the others also..