fozzieb

Hello all, I've been pouring lead for about 10 years, and I am now wanting to make my own molds. Does anyone know what type of material to use to make my own molds. I've tried Paris of Plaster, and it didn't last, used Hydraulic Cement, and it didn't mold correctly, I've thought of aluminum, but thought that I might have to drill or use a dremmel tool to make my cavity the right way, but if there was another easier way to do this then I would try it. I have some small weight ideas that no one that I have ever seen has, and I have some larger ones made, but they need to be smaller and lighter to use down in the south and for fresh water. Most of our weights are 1/2 oz. and lighter, and I have 1/2 oz. weights that I am pouring, but I want to make a mold for a 1/4 oz. and 1/8 oz. weight as well. My new 1/2 oz. weight casts a mile, and is more sensitive on the bottom than most conventional weights. So if someone knows of an easier way it would most help. Thanks, Fozzieb