The metal parts of the Kiln Sitter that touch the small pyrometric cone should be coated with kiln wash. These parts are the two cone supports and the underside of the actuating rod.
Please do not apply kiln wash directly to the pyrometric cone. This could cause a shell to form on the cone, resulting in an over-fire. Apply only a light coat of kiln wash to the cone supports and actuating rod. If the coating builds up, remove with emery cloth and then apply a fresh coat. Do not allow the kiln wash to get inside the porcelain tube.
Wait until the kiln wash dries before placing the small cone on the cone supports. Drying time is usually a few minutes.
Keep a small bottle of kiln wash near the kiln. Some people use a nail polish bottle with the built-in brush as a convenient applicator.
The tops of shelves and the kiln’s brick bottom should also be coated with kiln wash. Please be careful when using kiln wash. If it splashes inside an element groove, it will burn out the element.