Cartesian Grid
A coordinate system based on perpendicular axes used to locate points numerically in space.
Tools
Armature
An internal supporting framework used to carry clay, wax, plaster, or other modeling materials while a sculpture is being developed.
Armature Coupling
A connection that joins sections of a sculptural armature so they can be assembled, adjusted, or removed.
Calcagnolo
A short-handled heavy hammer used in stone carving and masonry, particularly for controlled striking and close working situations.