I tried about every process their is and yes pinholes are inevitable. I had best success with tig, and used silicon bronze to fill pinholes, works great. You can see the bronze spots all over these panels. View attachment 1715191549
I bought some silicon bronze rods to try with tig.
It didn't work for me so good when I tired it.
But that's probably my tig welding.
I'll try again someday.
