Repairing pinhole leaks -SS coil

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I have a stainless steel coil that I am using for a home brewing jockey box to serve draft beer. I got this used with a purchase of some other stuff. I believe the coil is 304 stainless. Parts of the coils have some small pinhole leaks. I don't have a TIG welder, but I do have an OA setup. Can the pinholes be repaired with standard lead free plumbing solder and flux or do I need to use something special?Do I need something else?James AHP 200X TIGMillerMatic 175DaytonaMIG 135Chinese O/A
Reply:You can use stainless wire and flux. There are several grades to pick from. Due to the OAW welding process It will discolor, and you will need to remove what's left of the flux afterwards. I don't know anything about home brewing so I cannot recommend a SS grade, or if brazing with silver/brass/bronze alloy is an option. Heres a tip shared from a post on the Miller welding forumThe key to ferro/nickel alloys is technique. The torch does not circle or have any pattern. 1-Flux the parts and rod.2-Use a tip the same size, or 1 smaller than you would for steel.3-Neutral to a 1x reducing flame.4-Bring the torch in fast, start the puddle with a steady motion.5-Filler is kept in the outer envelope and "drawn off" into the weld pool with very tiny movements.6-Progress the weld with a steady torch, let the puddle grow on its own.7-Draw the torch off slowly when finished8-If you have to stop and re-start a weld, re-flux where you stopped/startedBig No-No's-1-FLicking the torch in and out of the puddle2-Dabbing the filler in and out of the outer envelope3-Torch Circles4-Oxidizing flame