the weights are crude but if you had heated the mold more they would have turned out better. i have a bullet mold that makes 3 2.5 pound weights that my cousin made me in his machinist course. all it cost me was a case of beer. the edges are rounded and he measured a piece of webbing to make the melt insert in the weights. it is mae of cast iron so it must be heated up alot to be able to cast the weights but they turn out very smooth and have a great finish to them. ill post pics as soon as ihave some.