Has anyone here made their own thermolator? I have a job that we will run a few times a year, usually short production that doesn’t justify buying one, so I was thinking about making my own out of a cart, 2 manifolds (mold water in/out), electric hot water tank, and a pump. Water will be added from a check valve on a tee off of process water. Anyone have any insight for this? Could this work, or am I better off trying to find something used and getting it over with?