Not exactly. At Make, we bisque fire to Cone 04 and we glaze fire to Cone 5. The “Cone” rating indicates the temperature of the kiln.
On the other hand, the bisqueware you can buy at Evan’s is a different clay than we normally use. So, those pieces need fired to cone 06 which is much cooler than cone 5 or cone 6. I couldn’t find that information on the Evan’s website, but someone told me that recently, so I think it’s still true.