So general consensus is that copper TIG welding is the preferred method but not without removing the existing solder.
Thanks for the contact Jonathan, I will take you up on that.
Gonna get some flack here, but I did use JB Weld Tank Weld. While I work out a more permanent repair, the company owner told me to get it patched and running asap. I called JB Weld to verify, was told its drinking water safe, resistant to ethanol, chemicals, safe to 300 F, and will turn to ash if it gets too hot (no combustion issues). What issues can I expect with the JB Weld? Is it a safety concern? The JB Weld is not in the vapor path, its on the bottom side of the bottom plate.
I was surprised as well to learn this was all solder. I know what that still costs, I would assume it would be welding at all points.
I'll attach a pic of the JB Weld in place.
Additionally, I'll attach another pic. New still from Holstein made in 2018, still haven't gotten it up and running yet, but it too appears to be soldered.