I was pondering precisely the same issue. Very low amp TIG welding could be the answer to simply welding the roll marks. Exactly what is the perpose of copper? I have seen superior final results with electroetching. It does choose some practice to have the depth uniform. I feel the https://colt-combat-elite-command66677.dm-blog.com/31304117/gold-cup-trophy-colt-45-an-overview