I've tried the "Cold Heat" but wasn't impressed. I have soldering guns
and irons in the car but keep a butane iron in the tool bag for the quick
touch-up. The butane is a light weight blessing, use it, put the cap on
and put it back in the bag!

those butane ones rule. they even work in the wind unlike most cordless
electrics. had a job once where i had to get onto some serious machinery
and solder some wires in the wind at -30F. even corded electrics werent
working all that well... butane did em right up.

randy