Jasperware - Colored stoneware with white raised decorations.
Jig - Device that forms the same shape repeatedly by the use of a die or forming mechanism.
Jigger - A revolving mold on which ceramics are made.
Jolly King - Trade name of Sculpture House, Inc., an oil-base school grade modeling clay that does not contain sulfur.
Junior Power Arm - Bench or table top holding device that secures a piece of sculpture so it can be rotated to various angles. Usually used in wood working.