The bottom can be easily reversed in case of a firing mishap (except for powered bottoms). Sectional construction makes this possible.

• Unplug control panel
  
• Remove hinge (if you have one of the spring hinges)
• Take kilns sections off bottom.
• Turn bottom over so that the bottom surface is now the top surface.
• If it really bad you may want to put a layer of calcium silicate underneath the bottom or do your best to repair it with a brick repair kit before turning it over.