I am looking for a used production pot for heating plastics.  Some new ones are being built from Presto pressure cookers.

Yard sales my friend, yard sales!    I have seen about a thousand of them, just passing by yard sales!  lol  I will keep an eye out for you, though.  How much do you want to spend?  I might actually have one that I am not using...  By presto pot, you mean a slow cooker, right?

What I am interested in is a presto pot that has been converted in to a pressure heater that has valves instealled where you can keep plastic a constant temperature