As soon as I touch it with any abrasive, it becomes the same
color as the silver. Is there a way to tell?
Flux, and heat it with your torch. You should be able to see it
fairly easily. But if your "solder puddle" occurred on a flat
surface, you should be able to see it from the raised area it
Also, would some of you share your favorite tools for removing
Bezel scrapers come in handy, sometimes. Riffler files are also very
useful. Indeed, most files are best for removing unwanted solder.
Strips or other shapes can be hand-cut into emery or other
sandpaper. Mizzy wheels, 3M discs, practically every abrasive wheel
used with the Foredom. String charged with diamond or polishing
compound can get into very tight spots, too.
James in SoFl