NEEDLE. Many different types of needles (or points) are used in printmaking. The drypoint is a small, fine needle, whose point can be sharpened at various angles, each producing a different type of line. Double-ended needles possess a differently sharpened point at either end. Etching needles vary in thickness and are more or less sharply pointed, according to need; choppes are broader than usual etching needles and are sharpened in an oval section: they can produce variations in the width of a line according to the angle at which the point is held. Diamond, ruby or sapphire points are used for making light incisions in a metal plate or in a ground laid over it. Points made of ivory or bone (with more rounded ends than those of an ordinary needle) are used for tracing (to transfer a design), and for making marks on a ground without penetrating the metal plate beneath.
NEGATIVE. NIELLO. NUMBERING OF
PRINTS. |
