the sheets are heated in an oven to very high temperature so it can be stretched into or onto a mold, and cooled to a final shape. unfortunately, if we don't get some help, we will not be able to continue with all of our present groups! i can't believe how cute this little guy is! the error has to be reported within a reasonable time frame to us. you can also choose from external turning tool, thread turning tool. i like the mountain, but hate the policy against riding in the trees. 