Bisque Firing Schedule Electric Kiln

Low fire or high fire.

Bisque firing schedule electric kiln.

Bisque firing requires between cone 010 04 with cone 08 06 being the most common. The firing schedule for bisque firing is extremely important. The first firing of ceramic ware to make it strong enough to handle conveniently. Kiln furniture prep read your kiln manual s first.

Without it organic and sulfur compounds won t burn off and can then cause faults in a later glaze firing. Turn all switches to high until kiln has reached temperature. Turn all switches to medium for 3 4 hours. Turn on all switches to low for 3 4 hours.

Turn all switches to medium for 3 4 hours. Kiln wash this layer of protection prevents glaze from sticking to the shelf when it drips from a piece of bisque with the coating of kiln wash on the shelf the glaze can be scraped off easily. Because the bisque firing has already changed the clay into the ceramic material glaze firings can increase temperatures faster at the beginning and middle of the firing. A cone 04 glaze firing schedule with down firing.

Counterintuitively in low fire the cone number is higher up to 04 to ensure that all the carbon and other materials in the clay burn out during the first firing. Turn on all switches to low for 3 4 hours. The basics of using clay kilns glazes cones firing. In a fuel fired kiln excess air is a requirement.

Turn all switches to high until kiln has reached temperature. This is a typical firing schedule for a bisque firing in a manual kiln. In an electric kiln that s a given. Bottom switch on low for several hours if necessary this is called candling.

For a bisque firing there will be no soak and the ramp the increase in which the kiln s temperature is changing should be very slow. For this example we ll also see that the kiln will be down fired. There are two main approaches to bisque firing. Bottom switch on low for several hours if necessary candling.

We show how we load greenware in our electric pottery kiln for bisque firing and cindy demonstrates how we program the kiln computer controller programming. The heat will be applied just enough to slow the cooling. Both refer to the rate at which the firing is done including the heating soaking period if there is one and cooling.