Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3110 is a soft sodium borosilicate frit that can be found in recipes of all temperatures, commonly found in crystal glazes. This material has a similar chemistry to feldspars, making it useful in high feldspar recipes to substitute some of the feldspar for frit 3110 to make the mixture have more slurry properties and add kaolin to the mix. When frit 3110 is used in combination with frit 3403, bright and semi matte wall glazes can be produced.
