Not with the heat density we are dealing with. The thermal interface on the side of this one is not as wide as the one I made, which would matter more... and there seemed to be only a few degree difference between the FET clamp and the fins of the heatsink. It keeps the esc under 90F under the most stressful, over geared conditions.
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens