“How long must the lead stay in the mold to take shape?” Lead sets up quick, but you don’ want to open your mold right away –give it a few minutes. I usually warm up my molds on the pot while it’s heating up and if I’m going to pour different molds – I rotate them on the pot.
“Do I have to pick it out of the mold?” Depends on what you are pouring. Keep a pair of pliers, needle nose, and flush cutters near by. Careful when you use tools around molds – don’t want to score or damage the mold.
“Does the lead after coming out take long to cool?” The lead cools rapidly – again depends on what you are pouring. Take your time. NO short cuts. I learned from Richoc that you want the lure to cool slowly in the mold before you pop it out – especially with larger jigs. The lead is more malleable and the sprue comes off a lot easier.
“If it is hot would I need to put my lead on a surface that could withstand really hot temps?” Your whole work area should be high temp protected. Be prepared for the worse case scenario.
“Can I leave some lead in the pot when I'm done pouring or do I have to pour it out into something when I'm done pouring?” I leave a lot of lead, almost full in a 4-20 pot. When you get ready to re-use the pot - don’t mess with it until it’s completely heated up.
Don’t forget, at the least, safety glasses and gloves.