Tim, I don't know if lead will alloy with ALUMINUM at low temps or not, prolly not, but I wouldn't want to eat something cooked in said pot after it was used to melt Plumbium. Apparently ALUMINUM is pretty resistant to mild acids or all the soda pop cans would leak shortly after filling. Sodium Hydroxide will attack ALUMINUM as you pointed out and in the process liberates lots of hydrogen. When I was a lad, we used to put ALUMINUM scraps in a soda pop bottle and pour in some concentrated lye solution. If we stretched a balloon over the top of the bottle, it would shortly acquire enough Hydrogen to allow it to float up into the wild blue yonder when sealed and removed. Fun, Fun Fun with chemistry which is way, way off topic and I apologize profusely and will try to do better in the future.. Jesse MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.