DIY: Build a Cordless Soldering Iron

Want a temperature-controlled cordless soldering iron? You can’t buy one, but you can build a DIY one for tinkering in the field:

Good soldering requires good tools. In particular, a soldering iron that uses feedback to keep the tip at a set temperature works much better than one that doesn’t. That functionality is easy to find in a bench soldering station, but try to find a cordless iron with it, and you’ll be out of luck. This DIY solution solves that problem by marrying the business end of a Weller “Magnastat” soldering iron with a Maglite flashlight.

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(Source: IEEE Spectrum,