|Monthly Tech-Tip |
In our electric kilns, cone 5 finishes at 2163F (vs cone 6 at 2200F). That almost 40 degrees saved! The bodies I normally use need cone 6 to vitrify to the degree I want. But these new ones we are developing do not, they are good at cone 5 (Plainsman MNP 100#, MNP and M370 50:50, MNP 80#). I have always assumed that our glazes also need cone 6 to melt enough and develop. I was wrong. With the cone 5 C5DHSC firing schedule, almost every one is working well. The black is G2934BL and the inside one is L3500G.
Also called "middle temperature" by potters, cone 5 (~2160F/1180C) refers to the low end of the temperature range at which most hobby and pottery stonewares and porcelains are fired.