I had a call where I needed to replace a 6 gauge wire from a 24FET multilayer board with a 60mm x 100mm heatsink. Every soldering iron we've tried in the past simply removed the heat. In the past two 60w Hakko soldering stations have been used together with little success when the wire we removed was as short as possible. Soldering a new wire was impossible as the length would suck iron from the cold. This iron got the job done in seconds. Nothing short of amazing. Saved me from sending the board to the manufacturer to have the wire replaced. It goes into my bag of tricks and brings me $$$. It takes more than 5 minutes to heat up and the solder still melts 10 minutes after peeling.