I’ve spent my whole life in food service, and I’ve been brewing since the 1980’s. I acquired the coffee maker many many years ago as it was getting tossed. I knew I could turn it into a mashtun. My first attempts in the early 1990’s failed and I put it away for 12 years. Then I discovered digital controllers. I had a buddy remove the analog temp controller and add a digital one, and it’s been amazing ever since. It will hold exactly any temp I want to. I have also figured out how to use it for mash-in water and sparge water by accommodating for the temp flux….and it was free!