Silicon Bronze TIG welding over chrome

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Hi, I have a crack in the joint of the exhaust on my '48 Indian Chief. The exhaust is chromed. It is on an edge and the metal is fairly thin, so I'm wondering if I can (1) TIG braze it (silicon bronze) over the chrome, (2) carefully grind off a small amount of the chrome and braze it, or (3) grind it and TIG weld it, which would likely require replating the whole piece. What is attractive to me about brazing is that it is done at a lower heat, so I'm less likely to burn the edge, and it would look good enough as well. Being an old twin, it shakes a lot, but I've largely fixed the shaking problem on the exhaust and think the brazing should be strong enough. Of course, if I screw it up, I can still get a new part and it isn't the end of the world, but it would be good to fix it. Thanks for any guidance on what will work, and exactly how to do it.

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