When I cut my own molds, I draw a picture of it on one side, then take the wire used to make spinners and cut some samll peices. Put one peice around the outside, but just in side the line, one at a time. Squezze the mold together if it is a longer peice, tap on it with a hammer. It will leave groves to follow. For a center hole I use a BB from a shot gun or BB gun. Cut the mold and a grove for pouring the lead. Use light sand paper on a block of wood to get rid of the groves that you make in the begingng and during the cuting. Pour lead and you have a guide for matching up the two sides. On the one you are making use the BB, drill a hole just under 1/2" with 1/4 drill bit, 1/16 bind in aluminum and break easily, use low speed. When you get your 1" bit go slow, to finish use a Dremel with the flexible sandpaper, then polish if you are not painting it.
