See drying section for detailed drying instructions. See drying section for detailed drying instructions. Finished pieces appear white and chalky regardless of color of plaster used. If slightly abused, the piece crumbles. See drying section for detailed drying instructions.
White powder appears on the face of the finished piece.
After powder is wiped away, the face of the piece is rough or pitted. Black, green or reddish-brown spots of varying size on the surface of finished piece. Trapped air on the surface of the finished pieces. Sift plaster into the water evenly. Do not allow large quantities to fall into the water at one time.