[roger1]

Originally Posted by dataway

Let us know how the copper backing bar works. I just bought a chunk of copper for that purpose. In all my years of welding I've never used one.

Glad you asked as that will be good to show here. As you can see by the looks of these 3 small pieces of 1/8" copper bar look, I've used them many times.



Copper in place and ready for first weld:



First weld:



After a few iterations of moving the copper bar along and welding, here it is all welded and ready to be finished off:



Finished off using an 80 grit Roloc sanding disc. I also used a carbide burr to even out where I couldn't reach with the Roloc.



Also dressed up the underneath side of the bracket: