Quote Originally Posted by eesakiwi View Post
I think Magnesium is worth less than Aluminium, I just put it in with my Aluminium since it's a metal that's Alloyed into most grades of Aluminium anyway.
Zinc ? I have only seen it in the sacrificial anodes on boats.
There are quite a few things zinc is used for. I get most of mine from sink faucets from homes (I have a plumbing client I pick up regularly from). I use an angle grinder with a thin metal cutoff blade to test the faucet pieces after I take them apart. If the cut is yellow, naturally brass. If the cut is white, it is die cast (zinc).