Many reloading manuals will have a section on casting- and check the Lee Precision website for instructions- Lee makes a nice bottom tap pot. Do save the cut-off sprues, and out of spec or wrinkled/ frosty bullets- they get recast (but wait until pot is cold- they go in the NEXT melt- splashes). Besides ventilation, remember that lead is HOT- and does not get along well with water getting into the pot (think about water getting into a frying pan of hot shortening- but with attitude) ALSO- pay attention to personal hygiene- do not eat, drink, or smoke while handling lead- or until you go wash well with soap and water. Lead- and lead oxide- will transfer to you skin, and can not only be inhaled, but ingested. And last, but most important- DO NOT use Mom's kitchen range as a heat source. BIG domestic tranquility issue here. Trust me on this one, OK ?