Borax Flux Recipe

Borax is a white powder that is used as a flux when soldering. It helps to clean the metals and allows the solder to flow smoothly. To make a borax flux, mix 1 part borax with 2 parts water.

This can be done by weight or volume. For example, if you are using 100 grams of borax, add 200 ml of water. Stir until the borax is completely dissolved.

The Borax flux can be stored in a sealed container for later use.

Borax flux is a handy recipe to have on hand when soldering. It’s simple to make and only requires a few ingredients that you probably already have in your home. This flux will help to ensure that your solder joints are clean and free of oxides.

To make borax flux, simply mix together equal parts borax and water. That’s it! When you’re ready to use it, just apply the mixture to your soldering joint with a brush or cotton swab.

The borax will help to remove any oxides from the surface of the metals, allowing for a better connection. This flux is great for general soldering purposes, but keep in mind that it is not suitable for use with aluminum. If you need a flux for aluminum soldering, try this recipe instead.

borax flux

Can I Use Borax As Brazing Flux?

Yes, you can use borax as brazing flux. In fact, borax is often used as a brazing flux because it has a high melting point and is non-toxic. However, there are some things to keep in mind when using borax as a brazing flux.

First, make sure that the surface you are going to braze is clean and free of any oils or other contaminants. Second, be sure to apply the borax flux evenly over the surface to be joined. Too much or too little flux can cause problems during the brazing process.

Finally, have plenty of ventilation when using borax as a flux, as it can give off fumes that can be harmful if inhaled.

How Do You Make Homemade Flux?

Flux is a material that helps to soldering by cleaning the surfaces of metals and promoting wetting. There are many types of flux, but most commonly used in electronics is rosin-based flux. Rosin-based fluxes come in two forms: solid and liquid.

The solid form is usually in the form of a paste or a resin, while the liquid form is just, well, liquid. You can make your own rosin-based flux at home with some basic ingredients and supplies. What you’ll need:

* Rosin (can be purchased online or at a hobby store) * Alcohol (isopropyl alcohol works best) * A container to mix the flux in

* A way to heat the rosin (a candle or lighter will work) * Something to stir with To make solid flux:

1) Heat the rosin until it becomes liquified 2) Add alcohol to the meltedrosin until you have a 1:1 ratio of alcohol to rosin 3) Stir thoroughly and pour into your container

To make liquid flux: 1) Heat the rosin until it becomes liquified 2) Add twice as much alcohol as there is meltedrosin For example, if you have 2oz of melted rosin, add 4oz of alcohol 3) Stir thoroughly and pour into your container

You now have homemade Rosin Flux!

Is Borax Flux the Same As Borax?

Borax and borax flux are two separate but related products. Borax is a natural mineral found in deposits around the world. It’s made up of sodium, boron, and oxygen, and it’s used in a variety of ways – from laundry detergent to cosmetics.

Borax flux is a synthetic version of borax that’s used as a soldering agent. It’s made up of boric acid and sodium metaborate, and it helps to join metals together by reducing the surface tension between them.

What is Borax Flux For?

Borax flux is a white powder that is used as a welding rod coating and as an ingredient in soldering flux. It can also be used to remove oxides from metals prior to soldering.

Borax Flux Recipe


How to Use Borax As Flux

Borax is a mineral composed of sodium, boron, and oxygen. It has a wide variety of uses, including as a laundry additive and cleaning agent. Borax can also be used as a flux when soldering metals together.

When using borax as a flux, it is important to first mix it with water to create a paste. This paste should then be applied to the areas that will be soldered together. The borax will help the solder flow more easily and prevent the metals from oxidizing.

Once the solder has cooled, the excess borax can be removed with a damp cloth or brush. Any residual borax can be cleaned off with soap and water.

Borax Flux for Soldering

If you’re new to soldering, you might not have heard of borax flux. Borax flux is a substance that’s added to the solder to help it flow more smoothly and evenly. It also helps to prevent oxidation of the metals being joined.

Borax flux is available in both liquid and powder form. The powder form is generally considered to be better for beginners, as it’s easier to control the amount that’s used. Liquid flux can be more difficult to control and can sometimes cause splattering.

To use borax flux, simply add a small amount to the solder before beginning your project. You can apply it directly to the joint with a brush or cotton swab, or you can add it to the soldering iron tip. Once you’ve added the flux, proceed with your soldering as usual.

If you’re using lead-free solder, you’ll need to use a different type of flux designed specifically for that purpose. Lead-free solder requires a higher temperature to melt, so using a regular flux could actually make things worse by preventing the solder from flowing properly.

Borax As Flux for Silver

Borax is a white powder that is commonly used as a flux in soldering. When heated, it melts and vaporizes, producing a clear liquid that helps to solder metals together. Borax can be used on all types of metals, including silver.

When using borax as a flux for silver, it is important to heat the metal until it is red hot. This will ensure that the borax melts and flows evenly over the surface of the metal. Once the borax has melted, it should be allowed to cool slightly before applying the solder.

The solder will flow more easily if the temperature of the metal is not too hot. If you are new to soldering, it is always best to practice on some scrap pieces of silver before trying to repair your jewelry. This way you can get a feel for how much heat is required and how long you need to wait for the borax to melt.


Borax is a common ingredient in many household items and can be used for a variety of purposes, including as a flux for soldering. This blog post provides a recipe for making your own borax flux. The ingredients needed are borax powder, distilled water, and isopropyl alcohol.

Simply mix the ingredients together in equal parts and store in a sealed container. When ready to use, apply the flux to the area you wish to solder and then heat with a soldering iron. The flux will help the solder flow evenly and prevent oxidation.

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