Originally Posted by
jackbombay
For my first attempt at brazing I brazed a canti stud to an old chain stay, and then I tried to remove it with a large hammer, the chain stay ended up a mangled mess and the canti stud was never failed in any way at all.
Also, brass can be built up to a fairly large fillet, or it can be be a very small fillet, how much brass is used will affect the strength. For my canti stud destructive testing the fillet was actually pretty minimal.
Destructive testing is something that new members of the Blue Flame Union are encouraged to do. Braze some scrap bits together, try to break them. When I started making stem mounted decaleurs, I wanted to make sure they were strong enough. I made a few "blanks" and bent the bits to see if the braze would hold.
If you look closely, even though the one on the right didn't break off, there's a crack in the braze. I tightened up interface hole, did a few more, now I'm satisfied that the design, properly executed is stronger than it needs to be.