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The next four show the process of insulating it. With the measurements of my pot I was able to cut all the pieces from a single 4x8ft sheet of insulation 1.5″ thick. I started by cutting squares 2″ bigger then the diameter of the pot, that I traced the outside of the pot on and cut out (making a template with the first one to use on the rest to keep them all centered). Once I trimmed it and made sure the stock pot fit in snuggly I glued them together. Then cut 4 pieces to go around the sides encasing that were 3″ taller so I could make the top and bottom recessed to fit in snuggly form a seal. It also gave me space to cut out spaces to fit ice packs below, as well as the one on top for added external cooling to reduce the amount of ice needed inside to keep the temps cold and increase the quality of the end product. Once everything was glued together I sealed it all up with tape to limit air flowing through the gaps and reduce the thermal bridging. In retrospect it probably would have been easier to make an external shell with a recessed bottom lid, centered the stock pot in it and used spray insulation then put the top on to make a more solid, water and air proof insulation layer. Which was a friends suggestion after I had committed to using sheet insulation.
