Brazing will soon recrack the solder used in brazing, even high silver solder, is not designed to with stand flexing, torsion, or shear type forces. Brazing is just filling the capilaries of the metals to be joined and the filler metal cooling inside those capilaries and then solidifying itself and holding the joint together, great for pipe and such but not for sheet metal, which is what cymbals really are, cast or not they are sheet because of their thickness, over 3/8 inch and metal is considered plate.
Also you can only weld on the cymbal if it is B8 bronze, unless you intend on pre and post heating the b20 bronze to prevent post weld stress cracks from forming, I have not tried the new B12 bronze from Zildjian, so that may be readily welded also, I don't know but i have tried it on B20 and that does not work, unless you happen to have a heat treat oven and then table to keep the metal hot while working on it and then back to the oven for a controlled cool down.
But there are MANY good cymbals made of B8 alloy and I used to TIG weld them with great success, i even sold a few on ebay a few years back, but once you buy the cracked cymbal then weld it and then to make any profit is hard because people don't trust the repaired cymbal.
So I got out of it, BUT I have saved myself money in the past by repairing some cymbals to get me through a show or something.