|Monthly Tech-Tip |
The difference is quite amazing. The chemistry is the same. But the MgO is much more readily released from the frit in the Y version (vs the dolomite in G2934). Also, even though the melt is more fluid, it is still just as matte (a testament to the fact that the matteness in this recipe is not because it is improperly melted). Part of the reason for the extra fluidity could be the lower entrained micro-bubble population in the Y (these possibly impeding the flow of the dolomite version on the left).
G2934Y - Cone 6 Magnesia Matte Low LOI Version
The same chemistry as the widely used G2934 but the MgO is sourced from a frit and talc instead of dolomite. It has a finer surface, less cutlery marking and staining.