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Originally Posted by Erics626
It is true to its word of heating up and cooling quickly, but metal must be in the little slot for it to work.
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That limits what gauge wires you can solder with it. The average person who sees it will think it will totally replace, or they'll have no need to buy a regular soldering iron. It may be fine for 18, 20, 22 but wait until they try it with 12 or 14 and become disgusted with it. What they would expect is for it to do everything and then they'll wind up with not only the Cold Heat but also cold solder joints!
