My cylindirical cooler mash tun has developed two cracks on the inside and I melted some of the ouside. The result, I have a leak. Any thoughts about the best way to fix this? Should I use water weld by J-B weld?
Food grade? Probably not. If you just patch the outside the interior bulkhead will get wort trapped behind it. Damaged equipment. Time to pony up for a new tun. It's allright. I once burnt through the bottom of a cooler with a heatstick.
It does say it is approved for potable water and resistant to 300 degrees - though that does not mean it will make good beer. It just won't kill you.