This is how I put fittings in my homebrew kettles, HLT and MLT. It’s easier than welding, cheap to get started (cost me less than $20 in flux and solder from Ebay) and really works a treat. Anyone can do this. If you don’t have a MAPP tank, a regular propane tank will work as well.
Flux is Harris Stay-Clean. Solder is Harris Stay-Brite 4% silver-bearing.
Parts list for the dimpling tool – note the tapered adapter may need to be opened slightly to fit over the 5/8″ bolt (just a few thousandths of an inch). If you don’t have a Dremel or other tool to do this, you may want a 9/16″ bolt instead:
5/8″-11 x 4 1/2″ bolt
3/4″ to 1/2″ stainless steel butt-weld pipe fitting (McMaster-Carr p/n 45605K711)
1″ stainless socket weld low pressure coupling (McMaster-Carr p/n 4335T64)
1/2″ washer (drilled to 5/8″ with the step bit)
Close-up photo of the dimpling tool:
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