From: "vrs" <vrs at msn.com> From: "Dwight K. Elvey" <dwight.elvey at amd.com> Well, I went into the local TAP Plastics, described what I wanted to do to the nice saleslady, and ended up with these products: **Mold Making** TAP Silicone RTV System, Side A and Side B. Side B comes in a couple of color coded versions. I chose "TAP Silicone RTV Catalyst GREEN", which has a 1 hour working time, and a 24 hour cure. This stuff is easy to work with, and hardens to a rubbery consistency, very much what you want for mold-making. It is white until you mix in the catalyst, which dyes it green. **Casting** Quick Cast TAP Casting Resin, Side A and Side B. This stuff hardens into a stiff plastic, perfect for switch handles :-). Side A and Side B are clear, but the result will be white after it cures. This color change makes it more difficult to predict the effect of the colorants. This stuff has a very short working time -- a few minutes. It is recommended to remove the parts from the mold in an hour (don't know why; some kind of chemical reaction with the mold is predicted, but I've never seen it). **Colorant** TAP Premium Pigment, in yellow, brown, red, and blue. These are added in small quantities to Side B of the resin, before side A is added. Only a very small amount of the pigment will actually stir into side B (most of the pigment just lays there, no matter how much you stir.) Hope that helps :-). More later... Vince