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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've been using a Pinecil which is USB-C powered. It heats up in seconds and the temp can be adjusted easily. The big plus to me is how small it is. It's so much easier to handle than a standard iron, and the tips are push-in and can be locked with a screw so they're easy to swap.