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Rosenthal Collection

Rosenthal Collection Borax Flux 5 MOL – 1 LB Casting Flux for Jewelry Soldering, Melting Silver, Gold, Sterling

  • Based on 99 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Mar 21
Order within 12 hours and 1 minute
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Size: 1 LB


Features

  • CLEAN METAL MELTING, NO HASSLE Professional-grade flux that promotes smooth flow, reduces oxidation, and protects your metals during every melt
  • OPTIMIZED FOR GOLD, SILVER, STERLING Formulated for jewelers working with precious metals who demand clarity and clean burn-off
  • RESEALABLE BAG, PRO STUDIO SIZE Perfect for high-volume jewelers who need reliability without frequent reorders
  • REDUCES OXIDATION, PRESERVES VALUE Maintains metal purity and finish, saving you costly rework and time
  • TRUSTED SINCE 1926 BY MASTER JEWELERS From the Miami bench to global shops, Rosenthal delivers pro-grade casting support

Description

When you're casting precious metals, there’s no room for error. Rosenthal’s Borax Flux is the trusted flux powder that serious jewelers rely on to ensure every melt flows clean and finishes smooth. - Sourced for purity and performance - Reduces oxidation and bubbling during heat - Ideal for casting gold, silver, and sterling - Packaged for pro-level use, resealable for freshness - Backed by nearly a century of expertise Whether you’re running a full shop or mastering your bench at home, Rosenthal gives you the confidence to cast with clarity.

Manufacturer: ‎RJS


Part Number: ‎1


Item Weight: ‎15.2 ounces


Package Dimensions: ‎5.94 x 5.04 x 1.46 inches


Item model number: ‎1


Size: ‎1 LB


Material: ‎Other


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: May 13, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 21

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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Top Amazon Reviews

    • 4.0 out of 5 stars Look at the size u order
Size: 1/2 LB
Came fast but a lot smaller than expected course I didn't look at the amount so that's on me if u needing large amount click on the bigger option half pound defiantly is not enough
Reviewed in the United States 🇺🇸 on April 25, 2023 by J dog
    • 5.0 out of 5 stars Meffed up upon arrival
Size: 1 LB
Meth And sledding I mean
Reviewed in the United States 🇺🇸 on May 30, 2023 by McClain Beeks
    • 5.0 out of 5 stars Great Flux for Metal Melting
Size: 1/2 LB
Item arrived fast. I’ve used it already and very pleased.
Reviewed in the United States 🇺🇸 on April 20, 2023 by Roberto Suave Alijandro
    • 5.0 out of 5 stars Good value
Size: 1/2 LB
Will serve purpose well
Reviewed in the United States 🇺🇸 on April 23, 2023 by Nigel Miller
    • 5.0 out of 5 stars This works great.
Size: 1/2 LB
Been experimenting with a little bit of metal casting. I use this to 'glaze' crucibles for use and also to extract impurities from the molten metal. Just the ticket for both jobs.
Reviewed in the United States 🇺🇸 on March 10, 2023 by Terry Reznicek
    • 5.0 out of 5 stars Good high grade borax
Size: 1 LB
Looks like good product. Used it to condition a crucible.
Reviewed in the United States 🇺🇸 on March 11, 2023 by R. Z.
    • 5.0 out of 5 stars Ok
Size: 1/2 LB
Good
Reviewed in the United States 🇺🇸 on August 22, 2022 by Benny from Brooklyn

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