Monday, March 16, 2009
These photos show the arch brick set in place and ready for the keystone to be cast. The keystone ties the arch together and creates downward pressure on the arch brick "setting" the arch. You can see my son Cody casting the keystone using 3000 degree F castable refractory. Also included is a photo inside the arch form that holds the brick in place. Once the keystone material solidifies then the arch form is removed revealing the inside of the arch. After this the kiln's back wall and chimney will be built.