Re: Mangled Braze-on

AX KILLERS!!

hone depot carries bernzomatic aluminum brazing rod. after filing the
area using a clean file, the area is heated with standard bernz turbo
torch and propane green bottle. you kinda wave it at the tube heating
a wider area than necessary after practicing on another tube
prefereably owned by a friend or nabor. then apply the rodend to the
heated surface, it melts a drop, continue heating and the drop will
widen out. that's adhesion. drop the brazeon atop the solder and heat
the three components. preheat brazeon. presolder brazeon! get the
right side!!
when using the solder its a plus to spread the first drop over the
area. pick up a shop knife and knife the molten solder across the
receiving area, scrappung the molten aluminum solder onto the
receiving surface.
Aluminum normally does not accept solder as AL instantly or sooner
forms an oxide that prevents solder adhesion bit Bernz rod has a
component preventing that oxide formation. scrapping the surface with
the molten solder helps that reaction to occur.
try it. it seems foolproof!! others are more than welcome to write
disagreeables here but it does seem that if your frame is of nromal AL
tubing or worse then the propane heat levels should not affect the
tubing's structural properties for bicycle design parameters. maybe if
you have an Allez?

.

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