Originally Posted by tabetha

I have several gas ones, plus 12v/240 ones.
I also now have a cold heat one, warms instantly ie up to temp in less than a second, also cools in less than a second, seriously don't know how they do it but you can solder then instantly touch the bit on the end and it is cold, not even luke warm, and about £25, from Makro, also elsewhere, not so good on heavy cable but std car type stuff is fine.
It runs on 2 AA batteries, I use rechargeables, last about 25 hrs on a set, the beauty though is no burns if you put it down somewhere other than on a stand etc.
tabetha