[hinkley]

borax?

[genewitch]

I would think that's a different type of "flux" as it's commonly used for cleaning gold and preventing gold from sticking to the crucible. then again, flux is just an acid, so who knows.

[hinkley]

I've been watching too much blacksmithing on Youtube. It can be used for laminating iron, that much I do know. Not sure about brazing.