Flux. It is one of those words that can have many meanings. The one you choose to use is dependent upon its use and the context it is used within. In this case we will be discussing the term flux in the context of its use in the world of jewelry making.
WHAT IS FLUX?
In the jewelry-making world, flux describes a substance that is to be used to support the process of connecting two metals. One can see very quickly from this basic definition how important flux is to the jewelry making process.
Flux is a general term that can be applied not only to jewelry making but also to any other type of manufacturing or creating that requires metals to be joined by soldering, brazing, or welding. Metal is generally a solid, hard surface and it is this solid state that requires flux in order for the soldering to take place. Flux gives the solder a clean surface from which to connect. A good flux will lessen oxidation and allow the union of the metals to be strong and direct.
FINDING FLUX
Flux should be fairly easy to find. Most jewelry supply houses will carry several brands of flux along with other jewelry supplies. Flux can usually be purchased for a fairly cheap price. If you are unsure about which product to purchase consult the sales person or a skilled jewelry maker. Most specialty supply stores, such as a jewelry supply house, will not hire someone that does not have some level of knowledge about the products and processes. Asking your sales person is a safe bet due to the fact they are probably jewelry makers themselves.
On the other hand, doing your homework before you make the purchase by asking someone skilled in the art of jewelry making can extend your circle of acquaintances in the field and add to your personal pool of knowledge. Most artisans are happy to share and inform others on their field of choice.
MAKING FLUX
Flux is generally purchased as a liquid but it can also be found as a paste. Each requires a slightly different approach to its proper use. And, yes, it is possible to make your own flux and quite cheaply too.
Borax is the main ingredient to be used when making your own flux. Mixing a little with denatured ethyl alcohol will give you a flux. To make the flux even better many recipes call for a little Boric Acid as well. Look for a recipe or ask another silversmith if they have one. Getting another person’s take or experience in making flux is also a good idea.
All of the ingredients for making your own flux are very inexpensive but making the flux and making it well could be tricky and require practice. Purchasing readymade flux is the fastest and most reliable thing to do. The products are guaranteed to be right every time and give you the proper surface needed for those soldering projects.
Experiment to find what works best for you and your particular needs. Consult an expert whenever you are unsure or need advice. And remember flux is made from hazardous materials. Always err on the side of caution when working with flux and follow basic workshop rules by wearing safety glasses and keeping the flux away from your skin.
