Originally Posted by jeffmeh
Don't omit the heat sinks! Preferably, mount them externally through a cut out, bonded to the SSRs with thermal grease.
Right now I have three SSRs mounted on one long heat sink and the heat sink is strapped to my plywood panel with two zip ties. The fins are clamped against the plywood but the heat sink is oriented so the fins run vertical. It cools great - I can actually feel the warm air coming out of the top during my boil.
I asked if he could cut a slot in the side of the panel so we can just mount it from the outside. He measured the length and width of the heat sink and is supposed to let me know.