Chapter 8 SOFT ETCHING GROUND

For some processes there is needed an etching ground which has the property of not coating the entire surface, permitting the etching fluid to penetrate at many spots uniformly, or, if it resists the etching fluid, still so easily affected by manipulation that it will admit the acid according to such manipulation. There are two ways to make it.

(1) Thick linseed oil varnish 1 part

Tallow 2 parts

(2) Wax 1 part

Tallow 5 parts

Linseed oil varnish 3 parts

The application will be described in the instructions about aquatints, etc.