Different plaster casts are different in length, width and height. For example, the plaster statue of Chairman Mao during the Cultural Revolution was 4 1 cm in height, 33 cm in shoulder width and 17 cm in bottom width.

Gypsum image is made by diluting water and gypsum according to the ratio of 1: 1.8, pouring into the mold, and demoulding after the gypsum is completely dried.