Sculpey too lightweight, any ideas on making a small item weigh more?
I have made several patterns from Sculpey for a friend who does bronze castings of them. They are runes that end up on SCA helms. They measure 1.5" x 1" x 1/8". Rune size. The problem is that my Sculpey originals have little or no weight to them, causing difficulty in getting them to shake out of the casting sand. (If they were heavier, they would easily fall out, we have to use a pick to lift them out, which messes up the sand) Any thoughts on making the Sculpey weigh more?