Very good soldering iron for an amateur like me in electronics. I weld circuit across print and cms. The original fault has to be a little bit Groose to put the cms I can get out anyway. The size of the failure is 1mm (measured) but is not shown in the article. A shame as if notice known size before, I would have taken a smaller outage in the same order. 6 months that I use it regularly and running smoothly.