Some Tips about Solder Blocks
braze boards made of spun glass and clay. They are the least expensive
are but they do create dust and crumbs.
Silquar blocks are very popular now, as
they are very hard ... no flaking.
Honeycomb is both hard and porous to
prevent heat sinking. Wires can be inserted into its small holes as pins
and hold downs.
Magnesium blocks are very soft and are
the best for careful pinning.
Charcoal can be pinned but it cracks and
burns up quickly. Charcoal is best for melting round balls.
A binding wire wrap circling the edges of
a charcoal block or a honeycomb block usually helps it stay together
Choose the right block for the things you
need them to do. Most people have several depending on the job.
HARD SOLDER (Brazing) FLUXES
ANTI-FLUXES - to prevent brazing solder flow
||SPAREX No. 2
DRY PICKLING ACID
Silver Soldering (brazing) tips:
A good fit.
Keep it clean.
Lots of clean flux.
Clean the solder too!
Fire it up and do the job quickly.
Heat the big pieces first.
Dim the lights if necessary to "see" the metal's temperature.
The solder follows the heat - use this to help control where it flows.
Finish by bringing the whole area (of silver) up to temp. to completely flow the solder.
- Even some of the pros don't follow this last step and get bad joints!)