Orton Pyrometric Standard Kiln Cones
Potterycrafts
£13.32
The effect of temperature and time together is called heatwork. Pure temperature only tells half of the story; to understand the firing process it is essential to grasp that the time taken to carry out a firing has nearly as much bearing on the end result, as the temperature. For example, if two identical pieces are fired, one taking eight hours to reach temperature, the other only six hours, the
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