Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Soft solder does work for steam joints that will NOT be exposed to direct flame. I much prefer Staybright brand solders, with a small percentage of silver, for soft solder jobs as it is much stronger with a somewhat higher temperature tolerance than standard soft solder. But for anywhere that flame is likely to be near or come in direct contact with any solder joint, then true silver soldering (silver brazing) is far and away the better way to go!