These days you can go a lot smaller, thanks to USB-PD irons, small scopemeters the size of multimeters(Check out Owons new stuff) and the like. I don't think I

These days you can go a lot smaller, thanks to USB-PD irons, small scopemeters the size of multimeters(Check out Owons new stuff) and the like. I don't think I'd wanna use lead solder in a van though. You always wind up with tiny dots of it around and even micrograms a day of the stuff is not healthy.