What do you know about butane soldering irons? I think not quite a lot. But there is a great blog where there is an article [url=https://solderingironguide.com/reviews/power-probe-soldering-iron-review/]Power Probe Butane Soldering Iron[/url] . All the details of the structure are written there and how and how to use it correctly for you. I think it will be important for you