
How to Make a Cone Pack for Your Kiln Firing Ceramic ...
Mar 06, 2019· How to Make a Cone Pack. A cone pack, sometimes called a witness cone (see definition below), is made by placing a guide cone, a firing cone, and a guard cone in a coil of guide cone is a cone cooler than the intended temperature, the firing cone is the temperature you are firing to, and the guard cone is one cone hotter than you are firing.