When I smelt scrap I'll run 7 or 8 of the Lyman style molds. If the right friend is over I'll include his Lee mold into the lineup. It works fine. I really don't care for the 1/2 pound ingots and just use the 1 pound side. They come out smoother than the ones in my older cast iron molds. You will quickly discover that you need several, not just one. Personally, I would shop around for the best price and just order 4 or more cast iron ones. They will last forever. Four pounds in a mold is a good compromise between production and being easy to handle. Some of the homemade angle iron molds work well but can get heavy during a long casting session.