But sometimes they are applied separately, the borax first and over this the particles of spelter.
Soldering at a red heat by means of spelter is called brazing.
The fused borax works its way in by capillary action, and the spelter follows.
Before the war these four countries with the United States produced over nine-tenths of the world's spelter.
The heat should be continued only long enough to cause the spelter to flow into place and no longer.
A piece of metal was cut from the pattern and the edges were brought together and brazed with spelter.
Swansea has almost a monopoly of the manufacture of spelter or zinc.
Zinc ore, from which spelter is obtained, reached the price of $112 a ton.
The borax is generally powdered and mixed with the spelter, and both with water.
The metal is known in commerce as "spelter" when in ingots, and as sheet zinc when rolled.