MEXICOWANDERER wrote:
Heat copper with a propane torch. Then plunge it into cool water. This is called annealing. Makes the copper softer and highly crack and fracture resistant.
If you have a steel container you can melt enough 100% pure lead to dunk the finished terminal in. Slop on the plumbing paste flux. S-l-o-w-l-y lower the terminal or bus bar into the molten lead. Examine your finished piece for holidays, and re-flux and re-dip if necessary.
Electroplated terminals and lugs, suck. The plating is too thin, and tin is used only because lead is tough to electroplate.
A pure lead hot dip battery terminal is a dozen times more resistant to sulfuric acid attack than a tin/lead electroplate.
WATCH THE FUMES!
Use a painters mask and this is not optional. Do not hot lead dip around children and clean every bit up when you're finished.
If you're after acid resistant and oxide resistant terminations this is the way to do it. TIN is not an optimal metal for this, Gold is the best but, you know...
You might want to re-think the lead coating at 7% conductivity? The article “The Tin Commandments" by AMP might change your mind on tin plating.
MM49