<img src="http://www.crunchgear.com/wp-content/uploads/2009/10/thanko_soldering.png" />
I don't know how and I don't know why they do it. But Thanko, the Tokyo-based maker of gadgets no one needs, is
Do you remember that Cold Heat soldering iron that turns hot only when touching metal? Well, Instructables user photozz has put up a guide to saving $19.95 by making your own Cold Heat soldering iron