RST Engineering (jw) wrote:
Is it purely a function of the size of the metal piece, or is the type of
metal part of the equation?

The other thing I don't understand is that if I do a good job of insulating
the metal piece from ambient how it won't eventually come to the same
temperature as the head.

Thermo and I never did get along very well.

Jim

The insulation is to shield the sensor and heat sink from the effects of
transient airflow. The insulation won't be perfect in any case, but you
can vary the amount of insulation and the size of the heat sink to vary
your results. If the insulation is perfect, then you will need to bolt
the heat sink to something that doesn't get very hot.

This idea might not work at all, but it is something that would be easy
to try, and easy to change variables on.


--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.