Fibrement Stone through a cleaning cycle
Three days ago I had an oven accident wherin my Fibrement baking stone's entire surface was covered with burnt-on residue: basically, carbon.. The manufacturer specifically warns against using any liquid to clean the surface, but no amount of wiping or brushing would clean it. However, the manufacture's specifications show that their stones will withstand temperatures well above the self-cleaning temperature of home electric ovens. Since I was in a "nothing more to loose" state I decided to try running it through the self-clean cycle. I've been cleaning my pizza stone's (manufacturer unknown) spills this way way for more than twenty years.
At the end of the three hour self-cleaning, and hour and one-half cool down period, I was amazed to find no evidence of the burnt-on residue remaining! The stone looked almost new. I wiped it down with a clean rag--there was a very small amount of gray ash dusting the top--and used it (two loaves of Jewish Rye) a couple hours later.
I've been well pleased with the Fibrement stone's baking performance, this incident made me a Fibrement fan!