Because there are variables beyond my control (clays, papers, water, mixing errors and etc) always pre test fire what you have before a big project. No guarantee can be offered that 'alternative" commercial paperclays now on the market will meet the all the performance advantages of my high performance trademark P'Clay® brand only available from licensed manufacturers/distributors.
extreme flame firing with paperclay:

work by Nina Hole (Denmark) during open fire-
These large works are built, then wrapped in a kaowool refractory blanket to hold the heat in during the warmup time. Later, when all is glowing red hot, the blankets are pulled off to reveal this dramatic view of luminous form that cools overnight.
Construction of this site continues.