3 years ago I got a call from a guy wanting some lead castings made. He saw my lead sinker molds and asked if I can cast some lead parts for him, 1000 or maybe 2000 per year. At first I declined but he offered to send me a sample and urged me to "look into it". The part is a security pin and is sold by the piece, not by weight as most lead products. Hence it was a very appealing offer. After some thought and some tries I ended up machining a small aluminum three part mold that can make 10 pieces. The mold was crude and didn't work so well but I managed to send some promising pieces to the customer. Machining a mold for a 3mm diameter and 2 cm length part with a drill press and a dremel is difficult so I scrapped the first mold and started over. I opted for two pieces per mold cycle this time with much more attention and taking enough time in between; probably finished the mold in a month. In the end I had a three part mold: two identical sides and one perpendicular to both. The end product is like a bolt without threads and a circular head. Anyway, I made the mold thinking that it needs a machine to be properly used. Hence I found on youtube plenty of videos of lead casting machines that seemed easy to copy and started my own. It is in operating condition since then with some minor tweaks. I made hundreds of parts usually in batches of 200 pieces. They still need some cleaning by hand for flashing though. The original concept has an electric melting furnace with a hole at the bottom to pour directly on the mold. My version of the furnace leaked badly and was removed. I now pour traditionally, with a ladle. I recently got a lathe and plan to repair the mold (or make a new one) and improve the machine overall. Hopefully this summer.