
Charbonnel Additive Soft Black Ball Ground
Soft engraving ball varnish is used to protect the engraved surface. It is applied with a stamp or roller to the metal plate, which has been preheated. After etching with acid, the result resembles pencil lines. Characteristics: Composition: Judean bitumen, pitch resin, tallow, wax Dry matter: 52% Finish: opaque satin Hardness: soft Consistency: solid Cleaning: with mineral spirits














