. The half-tone process. A practical manual of photo-engraving in half-tone on zinc, copper, and brass. ETCHING THE PLATE. 265 ing the brush vertical, use it as a dabber on theedge of the stopped-out centre of the picture, using lessand less pressure as it approaches the boundary atwhich the etching is to stop. When the varnish is drya one minute etching is given. The plate is thendabbed dry with the chamois leather pad, and thestopping-out extended about a quarter of an inch withthe hog-hair brush, with perhaps a little touch of theordinary stopping-out brush to make a solid joining
. The half-tone process. A practical manual of photo-engraving in half-tone on zinc, copper, and brass. ETCHING THE PLATE. 265 ing the brush vertical, use it as a dabber on theedge of the stopped-out centre of the picture, using lessand less pressure as it approaches the boundary atwhich the etching is to stop. When the varnish is drya one minute etching is given. The plate is thendabbed dry with the chamois leather pad, and thestopping-out extended about a quarter of an inch withthe hog-hair brush, with perhaps a little touch of theordinary stopping-out brush to make a solid joining one minute bath is given ; and again thestopping-out is advanced a quarter of an inch, and afurther etching given. The part nearest the scratchedoutline will accordingly have received the deepest etch-ing, and will print the lightest. The whole of the varnish is cleaned off, the platefilled with white, and the fine etcher proceeds withhis usual course of fine etching to improve the at the same time should lead them into thevignetting he has already done, so as to avoid a kind ofhigh-wate
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Keywords: ., bookcentury1900, bookdecade1900, bookidhalftoneproc, bookyear1904
