Borax is a sodium borate compound that acts as an important flux in ceramics, facilitating the melting of glazes at lower temperatures. This makes it an ideal material for the creation of earthenware and other low-temperature ceramics.
In addition, it improves the transparency and gloss of glazes, resulting in smoother, shinier surfaces on pieces. Borax also helps to reduce the viscosity of the glaze during firing, which improves its uniform application and avoids defects such as bubbles or cracks.
Interesting Fact
Borax is also known for its uses outside of ceramics, as a household cleaner and an ingredient in glass manufacturing and cosmetics.
Helpful Tip
Use borax sparingly in your glazes, as too much can cause glazes to run. If you are looking for a smooth, glassy surface, borax can be a great ally in your glaze formulas.
