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I just thought I'd do a post on what goes into polishing the brass brazing on a bike - it's tons of work as the brass is a pretty damn hard alloy, especially as the rod I use contains Nickle.
My take is that you either have to polish the entire bike or not at all (if you are a good enough brazier to pull that off) as if you just go 1/2 way it looks like a hack job, which it most certainly is......
Here, the area has been just brazed and needs to be soaked overnight in a dunk tank to not only remove the flux on the outside but the flux on the inside as well.
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Here it is all free of flux but for the most tenacious flakes.
A nice braze, you could just spray a powdercoat and a clear on that and run it, which I offer, for less then a fully polished bike, and you will see why in the following pics.
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First, some noisy ass grinding with an Aluminum Oxide point - Al-Oxides are better known to many as Corundum and with impurities as Rubies and Sapphires.......Some of the hardest elements we know of due to their tight molecular structure.
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To look perfect and blend seamlessly one needs to have a nice uniform radius which compliments the area you are polishing. Here the weapon of choice is a snap-on rat tail file.
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Here I have went over the area I am working on with these files - a 10" rat tail bastard (yep - cool name!) a 8" 2nd cut half round, and the tiny snap-on rat tail.
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Now I hit it with some 3M 80 grit emery paper to see how it's all blending together.
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Any small details which stick out are massaged with a Grobet riffler file.
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A final hit with the 80 grit and it looks really sweet!
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.........Just knock out the entire frame to that finish & you are ready for braze-ons!
- Steve.