When mixed with water, the Borax powder creates a solution that acts as a flux when soldering and prevents oxidation, working especially well with sliver. Additionally, apply the same solution on the inside of a crucible to help extend its life.
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U.S. Borax Resources
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Makes paste by the addition of water. When applied, acts as a flux and allows solder to flow. Best used to line the insides of crucibles as it helps
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