http://carlholmgrenwoodworking.com
This video describes my technique for braze welding (silver solder) broken bandsaw blades. It includes description of a jig for grinding a chamfer on each end of the broken blade, a jig for holding the blade for welding, applying silver solder to the joint, the welding process, grinding the weld smooth and annealing the blade after the weld.
References: 1. http://www.finewoodworking.com/how-to/article/repairing-bandsaw-blades.aspx 2.http://www.popularwoodworking.com/articleindex/silver-brazing-your-own-band-saw-blades
3. Tom's Techniques: https://www.youtube.com/watch?v=mzKSk_Zs0Ew