need help!!

Hi dose anyone Know how to build a vacum form box??
i would like to make windows, canopys and other parts.
what materials do i need?
how dose it go together?
thanks

heres a link to building a vac box. You will need clear sheet styrene i dont know how thick you can get it from squadron mailorder. Hope this helps.

http://members.aol.com/GCGassaway/vacuform.htm