[Al Skierkiewicz]

Ian, There isn't enough metal to hold the cold long enough to be effective. It likely will reach ambient before being placed on the field. The bimetal is the silver part in the picture. It is roughly .020 to .040 thick. The terminals connect to the left and right side of the bimetal. The terminals are connected to the #6 on both sides which will transfer temperatures and draw the parts close to ambient. The handle parts are removed in this drawing. Even spraying directly into the handle opening is unlikely to take this part down below ambient all things considered. The base is Bakelite.