I snuck in a few hours this morning to braze the front triangle of Brian's bike. This photo shows what the joints look like while the bike is cooling. The flux, which starts off as a white paste turns to a clear fluid during brazing. This molten liquid both preps the base metal by eliminating surface oxides and helps the silver to flow through the joint...pretty cool stuff. While it cools, it solidifies into this glassy coating. The base metal underneath also cools contracts causing the flux to crack like a broken windshield like you see in this picture.
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