At The Bicycle Academy we use SIF NO39 for capillary brazing in circumstances when a viscous filler material is required, for example when an exterior fillet is required in addition to a capillary join. Perfect for brazing internal cable routing tubes in position. 

A general-purpose cadmium free 38% silver brazing filler metal. It can be used with a range of heat sources. It also offers a combination of medium melting temperature and flow characteristics. Use with SIF silver solder flux.