I've been told that the cracks don't matter and if you want you can use
the kiln mortar to patch them up.


Doug Porter wrote:

A couple weeks ago I finished my first glaze firing in my brand new
Olympic Kiln----WHAT A DISASTER!!!!
I am still trying to chisel pieces of glaze and pottery off of my
shelves. Anyways, to add to my misery I noticed, post firing, that
the fire bricks on the bottom of my kiln have cracked. How could this
have happened and what should I do about it? I did put kiln wash on
the bottom per recommendation of the instruction manual---could that
have contributed? I also put two shelves on posts down there so I
wasn't loading directly on the bottom---also per recommendation of the
instruction manual. However the cracks are nowhere near the post
locations. Will I be able to fire with the bricks like that? Is this
normal? HELP PLEASE!
LMac