Jewelry making involves a lot of math and science, yep!
It’s one of the most difficult handjobs, especially if you don’t have the right combinations of tools. But with the combination tools, you will find jewelry soldering easier and more enjoyable. A flux is definitely one of the tools you must pay attention in order to achieve stunning results. Here, we bring you 7 of the best flux for soldering jewelry.
Our goal is to streamline the flux buying process by reviewing the best contenders available on the market. Enjoy!
Table of Contents
IN A HURRY? Here’s Our Top Picks…
Last update on 2021-07-24 / Images from Amazon Product Advertising API
Top Rated Soldering Jewelry Flux Reviews
1# Harris Silv Brazing Flux
- Active range 1050°F - 1600°F
- Model Number: SSWF1/4
- Item Package Dimension: 2.38" L x 2.38" W x 2.25" H
- Item Package Weight: 0.27 lb
Last update on 2021-07-24 / Images from Amazon Product Advertising API
Last but not least to appear on our list of the best flux for soldering jewelry is the Harris Silv Brazing Flux. It’s an all-purpose, low-temperature soldering flux used in silver Brazing. It’s suitable for soldering most ferrous and non-ferrous metal; it’s however, not recommended for use on magnesium, aluminum, and titanium. You could try all the silver Brazing Flux in this world, but you will never get a match for this.
If you observe any undesirable effect using this Flux, it could be that you are not using the right combination of tools.
The best solder to use with Harris Silv Brazing Flux is the high Sterling silver content solder. With this combination, you will surely enjoy 99.9% success soldering jewelry all the time.
Things we liked
- Good product
- Works for silver soldering
- Value for the money
- Great for brazing Copper to brass
Things we didn’t like
- You need to get the right solder
2# Sparex Granular Dry Acid
- Useful for pickling jewelry and metal components and removing surface oxidation
- Non-flammable and non-explosive
- Made in the USA
- Scales and pickles gold, silver and copper based alloys
- 10 ounce bag
Last update on 2021-07-24 / Images from Amazon Product Advertising API
The second Flux to feature on our list of the best Flux for soldering jewelry is the Sparex Granular Dry Acid. Sparex is a longer-lasting, easy to use Flux for soldering jewelry.
It’s a worthy and safe replacement for dangerous sulfuric acid; very effective in cleaning and pickling metals. This Flux is very versatile as it has so many advantages over the rest of the other commonly used fluxes.
Talking about versatility, Sparex Granular Dry Acid Flux performs excellently in removing surface oxidation, scale, pickling silver, gold, and copper-based alloys. Above all, it’s non-explosive and non-flammable. 10 oz.
Things we liked
- Works great
- Great for removing surface oxidation
- Useful for pickling jewelry and other metal components
- Non-flammable and non-explosive
- 10-ounce bag
Things we didn’t like
- It’s not safe to use on copper mugs.
3# Prip’s Flux By Griffith
- Image shown is only a stock representation of the item, not size or color.
- Use Before Primary Flux For Firescale Protection Contains: Water, Boric Acid, Borax & Trisodium Phosphate
Last update on 2021-07-24 / Images from Amazon Product Advertising API
The next Jewelry soldering Flux to make it to our list is the Prip’s Flux by Griffith. I’m sure this is something you can make by yourself; the recipes are not something abstract and are widely available in most stores. Prip’s Flux is a liquid, more like a light-duty Flux, but exhibits a tremendous metal protection ability against oxides.
The only flaws we found on this jewelry soldering Flux is that it’s somehow more difficult to develop coating compare to the above-listed fluxes; this is because of its inferior wetting power. The best method to use on this flux is to warm the metal first, brush or spray on the Flux, and then warm the metal and repeat the process.
To establish an air-tight shield against oxidation, this process has to be repeated severally. On the advantage side, Prip’s Flux is not water-soluble, you can choose to cool the piece in water rather than pickle, and by doing that, the Flux layer remains relatively unaffected.
Things we liked
- Works effectively
- Greatly work for gold
- It’s non water-soluble
- Protect all types of metal against oxide formation.
Things we didn’t like
- Limited return policy.
4# Ecoxall Chemicals Multi-Purpose Boric Acid
- Fine Granular Texture
- High Quality
- Anhydrous (Without Water)
- 99.9+% Pure
- Industrial Grade Strength
Last update on 2021-07-24 / Images from Amazon Product Advertising API
Fourth on our list is the Ecoxall Chemicals multipurpose Boric Acid. It’s very Powerful and 99.9% purely anhydrous. It’s also referred to as hydrogen borate or Ortho-boric acid, a weak, monobasic form of Lewis acid of boron.
It’s an excellent Flux for jewelry soldering! Ecoxall Boric Acid exists as a white powder or a colorless crystal that can easily dissolve in water.
Apart from it being an excellent jewelry soldering flux, it’s also commonly used as an antiseptic, neuron absorber, flame resistant, or a precursor for other chemical compounds.
The chemical has the ability to dissolve in water and move with water through the soil. Boric acid can also be absorbed by plants, and most plant needs boron (a major component of boric acid) to grow.
Things we liked
- Value for the money
- The powder has medicinal values
- Fine Granular Texture
- Anhydrous
- High Quality
- Industrial Grade Strength
Things we didn’t like
- It’s the only Flux with no negative review.
5# LA-CO Regular Soldering Flux Paste
- Water-soluble paste won’t leave residue in water piping
- Meets industry standard ASTM B813 and contains no zinc chloride to reduce corrosion concerns
- Non-acid, non-toxic, and lead-free to eliminate safety concerns
- Cleans pipe upon application, allowing solder to run more smoothly around the pipe
- All-weather formula for use in hot and cold climates
Last update on 2021-07-24 / Images from Amazon Product Advertising API
LA-CO Regular Soldering Flux Paste is a multipurpose flux that protects your parts up to 1500°F. It’s a water-soluble flux that meets the ASTM B813 industrial standards. With UPC and NSF approval, LA-CO flux paste is the best flux for all copper soldering – be it copper to copper joining or copper to brass soldering.
It is an active water-soluble, fluoride-type, lead-free flux ideal for soldering all non-ferrous metals. Unlike other flux, the LA-CO Soldering flux begins to melt and dissolve oxides at 320°C.
The water-soluble paste leaves no residue in water piping; Cleans pipe upon application, giving room for the solder to run more smoothly around the pipe.
Above all, the paste formula can be cleaned up with hot water. In our opinion, LA-CO flux paste is an all-weather formula for use both in hot and cold climates.
Things we liked
- Great value for the money
- Can be used for soldering wires
- Great for electronics
- Works on copper jewelry
- About 50/50 air-paste ratio
Things we didn’t like
- There are few negative reviews about this product.
6# 8oz Liquid Zinc Flux
- All-purpose flux specially formulated for stained glass use
- Includes an application brush! Goes on easy without being runny or sloppy.
- Completely water-soluble, making clean up quick and easy
- Can be used with zinc, lead and copper foil. Wash all work within 6-8hrs.
- Made In The USA
Last update on 2021-07-24 / Images from Amazon Product Advertising API
8 oz Liquid Zinc Flux is a revolutionary Flux product for jewelry soldering. It’s also a great Flux for stained glass use. This product is completely water-soluble, easy to use, and can be used on all non-ferrous metals.
The Flux paste Washes off when soap and water are used. It contains No hydrochloric acid, no zinc chloride, and no ammonium chloride. For that reason, the Liquid Zinc Flux is non-irritating to the skin.
If you are the safety-minded type, this is just for you – the flux contains no corrosive residue. It’s the safest flux out there! In case of eye contact, rinse with running water for 15 minutes. It’s recommended you wear eye protection.
Things we liked
- Excellent size for the price
- Easier and safer to use
- High quality
- Well packaged
- Versatile
- Completely water soluble
Things we didn’t like
- Flux and foil go together
7# Handy Flux Jar with Brush
- Great for soldering and pickling
- Protects parts up to 1600 degrees Fahrenheit
- Begins to melt and dissolve oxides at 600 degrees Fahrenheit
- Can be cleaned up with hot water
- 7 ounce jar with a brush
Last update on 2021-07-24 / Images from Amazon Product Advertising API
Hardy Flux is one of the most popular used fluxes for jewelry soldering. It offers so many advantages, one of which is its greater oxygen absorption ability.
Hardy Flux Jar with Brush is most preferred for operations involving oxide-forming base metals such as brass and copper, and also for jewelry soldering that calls for a lot of heat.
Besides its high oxygen absorption power, Hardy Flux has lots of amazing features. Among these is that the Flux turns clear at 1100°F, making it an excellent temperature indicator.
Another outstanding quality is the way it acts like glue. The paste formula can effortlessly be cleaned up with hot water. Hardy Flux can be used to hold a chip of solder in place when in use.
Things we liked
- Nice piece
- Easy to use
- Great for soldering and pickling
- Can be easily cleaned up with hot water
- The flux begins to melt and dissolve oxides at 600°F
- Protects parts up to 1600°F
Things we didn’t like
- No return policy
- Not suitable to work on copper.
Conclusion
We hope you had a nice time going through our review of the best Flux for soldering jewelry. If you are waiting for our final verdict on which is the best Flux to use, we are sorry because there we’re leaving that choice to you this time.
The main purpose of using a flux is to prevent the formation of oxides while soldering. The choice of a flux depends on many factors like the type of work, scale, and user personality.
All the products listed are great in their unique ways and will put the final touches on your homemade jewelry.
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