Addendum: A quote I ran across ...
DanStokes on a www.bangshift.com forum. wrote:
Joe - you guys probably have heat sink compound lying around (ask the electronics guys). Coat the bottom of the module before you bolt it to the plate and it'll conduct the heat MUCH better to the plate. We used the stuff (ours came from Omega) to get thermocouples to read the temp of a fuel tank as we heated it.
Afterthought: Some people use a custom-made aluminum or copper heat sink. (Copper conducts heat better but aluminum is almost as good ... and cheaper.) This specially made heat sink is a bridge-like, with two legs to raise the module up off what's it's mounted to. This allows airflow under the 'bridge' to draw more heat away. (The metal legs also conduct heat to what the module was originally mounted to.)
I can draw and post a 'picture' if you're interested.
