I haven't actually tried one of those but I was interested also so I asked about them on the PIC microcontroller list as an off-topic message. I got two replies from people who have them and, from what I received, my advice is to not get too excited. The tip is a two-piece device with a gap between the two poles. The solder or the work one is soldering is supposed to short out the space between the two poles where the heat forms between the work or solder and the tip. One guy told me that the gap is about a tenth of an inch such that it wouldn't be good for soldering electronic components on a circuit board. In other words, they work but only in certain types of situations. I was hoping to replace my Wahl cordless soldering irons which work fine, but use nicads that have to be replaced every few years when they get to where they won't hold a charge. The other drawback to the new soldering tool is that you might accidentally introduce 6 volts in to the circuit if one got one pole of the tip against some part of that circuit and the other pole against some other part instead of creating the short as desired. That is more than enough voltage to fry most IC's if misapplied so all in all, I was glad to have been told all these things. The soldering tool doesn't cost much, but if it isn't going to work for the purpose I would have bought it for, it is a waste of money. Bob Martin writes: >Has anyone had experience with Radio Shack's quick cooling soldering iron?