Cold Heat Portable Soldering Iron Despite the fact that I am the world's worst solderer, the smooth lines and features of this Cold Heat Soldering Tool still call to me. The AA battery-powered iron heats to 800° within a second, then back down to safe temperatures within another one to five. Portable soldering irons are a fine idea, but the butane-powered ones tend to work better for recreational combustion than for actual work. At $20, this battery-powered version might be worth giving a shot. [Thanks, Scott!]
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