I have aquired some wheel weigt balls flat on one side about 23 pounds each. tried to melt in cast iron fry pan 12". But could not get the lead hot enough because of the extra cooling area of the pan. I have the original aparatus ( Clayton & Lambert ) the balls were cast over, a gas fired melter but the cast pot was cracked. Question: May an aluminum quart sauce pan be strong enough to take the heat to SAFELY melt the lead?