I've seen and read about various crystal glaze recipes and all have been
fired to cone 9 -10 except for one listed in the Answers to Potters
Question book put out by Ceramics Monthly that lists a cone 5 recipe. Is
there a reason(s) that crystal glazes are usually fired to cone 9-10 or
can these recipes be modified to fire at a lower temperature, ie. cone
5?
Thanks, Max
