i saw this and it reminded me how a lot of people don't know soldering is really simple metals can stick together when heated and melted solder flows into the tiny gaps. once it cools, the joint is electrically connected and mechanically stable. they make portable soldering tools now
https://d2w9rnfcy7mm78.cloudfront.net/33041407/original_93fbce7a17d4c07aa4f83c80960b856b.jpg?1734427126?bc=0
i keep looking at my iron. soon.