Ha, that case must already have good air circ. I suspect it felt cooler due to evaporation in the moving air over your damp hand. To actually be cooler than the surrounding air it would need to actively cooled.

__________________
Lowering the tone of video since 2004.

www.zaskarfilms.com You tube channel 'zaskarfilms'
JVC DV5001e (big cam), Sony PC6E (tiny cam), Vinten pro5, PAG light, SM58, Sony ECM50, Sony C-76, 0.5x convertors for sony, Rode video mic, Vegas 7.