Thanks, Joseph, those pictures answer a lot of my questions. You're getting beautiful results. The only wrinkle I see for the wheels I want to cast is that there is a rim around the outside of the wheel. I guess that I would have to make the molds separate at that rim, in order to get the wheels out of the mold, but I run the risk of having flash right where I don't want it. It looks worth a try, tho. Thanks again!