Cheng explains: "These days most ceramic artists buy factory-produced clay that meets a certain set of specifications. Rarely would anybody add gravel. After all, everybody uses electric kilns, because they offer precise temperature control, so their pieces can be fired slowly, with no risk of cracking from overly rapid heating or cooling."
「現在陶藝家使用的是購買而來的規格化陶土，通常不夾砂，因為大家用電窯，可以精確控制溫度，慢慢『燉』，慢慢燒，不必擔心急遽的熱漲冷縮會把作品燒裂，」鄭永國解釋。