Caught a deal today! seems one of my kettles came in damaged, called the vender about replacement, and mention, I would rather go thicker wall, he asked I have a deal on 60 quart x 1mm wall , I can up grade you for 65 bucks for the 3 kettles and exchange.
Said "Heck Yeah Git R Done!" doing the exchange Weds, thank you for the info, I am thinking of having these welded and the other kettles were to thin.
Now am I over kill with 15 gal for 5 gal brewing??