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Borax Flux Granular1/2 Pound for Gold Silver Melting Casting Crucible Glazing Jewelry Soldering Flux Paste | borax flux for melting, casting and soldering applications

  • Based on 1,548 reviews
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Availability: In Stock.
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Arrives Monday, Aug 10
Order within 14 hours and 5 minutes
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Features

  • Keeps Metals Cleaner During Melting Helps keep gold, silver and other compatible metals cleaner during melting and pouring processes.
  • Helps Dissolve Oxides & Impurities Borax helps dissolve oxides and impurities while forming a fluid borate slag on the surface of molten metal.
  • Ideal for Crucible Glazing Use to glaze ceramic crucibles before melting to help reduce metal sticking during the melting process.
  • Great for Jewelry Soldering Flux Paste Dissolves easily when mixed with water to create a paste-style flux for jewelry soldering applications.
  • Supports Smoother Solder Flow Helps inhibit oxide formation on metal surfaces, allowing solder to flow more easily during jewelry bench work.
  • Useful for Casting & Assaying Preparation Suitable for precious metal casting, melting, pouring, crucible preparation and preparing melts for assaying.
  • 8 oz Clear Sealed Bag Packaged in a clear sealed plastic bag for storage and handling. Net Weight: 8 oz / 1/2 lb / 227 g.

Manufacturer: ‎Waymil


Item Weight: ‎8 ounces


Package Dimensions: ‎5.98 x 4.41 x 1.06 inches


Item model number: ‎365-603RT


Material: ‎borax


Date First Available: October 30, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Works great
Works great 👍
Reviewed in the United States on June 23, 2025 by Corey Sebastian

  • Great Product!
Works well, dont have a video sadly. But once i get more propane id be happy to post one.. makes things melt faster and easy slag removing when stirring also good price
Reviewed in the United States on May 3, 2025 by Kjay

  • Good mix
Fast ship
Reviewed in the United States on May 23, 2025 by James R Baird

  • Correct amount of fine ground borax
You will get the advertised amount. I used it for glazing a crucible. Make sure you preheat your crucible before adding the very fine borax or it will fly away if using a blowtorch. Melted into a glass like blob in the center of the crucible, must now try to heat it again and make it spread all through its surface. ... show more
Reviewed in the United States on December 11, 2023 by Alfatech

  • Making gold
Have not used it yet I am happy with it
Reviewed in the United States on May 7, 2025 by Laurie Freitas

  • great product
works great. melts down and galazes the crucible as it supposed to
Reviewed in the United States on February 8, 2025 by Mike

  • Works wonders
Always use it at your metal shop and for any metalworkshop. Excellent with finer metals lake alu, silver, copper, bronce & gold in small furnaces. It will clean your metals and your pours will be even better. So use it at all burning times.
Reviewed in the United States on September 16, 2024 by Jorge G Conte Burrell

  • Way less than a half pound.
Not exactly a half pound, but the product still works well.
Reviewed in the United States on July 30, 2024 by Hooligan

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