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iFixit wants to fix the soldering iron
(www.engadget.com)
This is a most excellent place for technology news and articles.
I love my Pinecil V2. It was cheaper than my 40W entry level Weller station and heats up way faster. I run it off my Anker USB power supply and also my Anker USB power bank. The power bank only outputs 30 or 40 watts though so I might upgrade that in the future. High wattage power banks are expensive though :/