|Monthly Tech-Tip |
Description: California colemanite
A natural source of boron, it melts at a very low temperature to a clear glass.
A natural source of boron that melts at a very low temperature.
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
|By Tony Hansen|
Follow me on