the time.? template. Ask the right question, and the neurons awake from lurking and respond.... Yes, the keyword you want is "resin casting". Google "DIY resin casting" got me a bunch of good hits. Typically small parts molds (either a actual or built prototype) can be made using RTV rubber and cast using an urethane resin. Search using some of those terms and you should be able to find some good instructions. Here is a commercial kit, the seller is not the lowest cost around, but reliable. http://www.micro-mark.com/ Look at product # 82698 There is a reprint article from Model Railroader on fabricating a duplicate of an old out-of-manufacture Lionel bridge grider. http: //www.micromark.com/html_pages/instructions/82708mrrresinart.pdf Dave. (an MIT TMRCie)