Wrong thinking. There is no better motivator for purchasing "tools". You WILL use a "batch" melting process again and again and again for making ingot of lead, Tin, and WW alloys. Trying to "batch process" in your 20# pot is going to ruin your 20# pot. Think BIG - 100# batch big. Then pour the alloy into 3# ingots, which are easier to put into the pot.