Crash and burn

For more years than I can remember I have been crash cooling my work. This has worked well for the shinos, celedons, and tenmoku glazes that I have used. I fell in love with a satin matte glaze at USU called Buttermilk. When crash cooled here at home it is a good hard shiny white that lacks much of the character I expected. I just clam cooled the last firing and am pleased with the buttermilk and our ash celedon has a much more pleasing satin matte surface. The pots on the right are clammed and the ones on the left are crashed.
For crash cooling I leave the spy holes and damper open and drop the kiln to just under 1900F. This usually takes an hour and then I clam the kiln up. For clamming I just turn the burners off and close the damper.