I dragged out the kiln tonight and heat cleaned all of my xc 116, no more blowtorch for me
Since I had it out, I figured I would try to heat treat some (the hardening process outlined in 3M's technical manual) I fired 4 ft, I didn't want to fire a bunch in case it didn't work, but I also didn't want to fire 4" and waste my time staring at a thermocouple, and tweaking a knob, for an hour.
The kiln is cooling down, I'm just hoping it isn't brittle now. Any guesses?
If it is stiff as a board I have a creative idea for the next test firing
Maybe it will work, maybe it won't who knows
Just in case anyone wonders, I fired it between 1652-1724 F for 60mins, and allowed to cool down with the kiln.