-tone engraving thathas been perfectly etched. (Note thediamond-shaped dots.) B represents an enlarged sectionthat has been rushed in etching(etching fluid too strong.) This plate will give fair printing but willsoon break down if the press runis long. C is a cross-section of A and showsa perfectly… … D is a cross-section of B. Note theunder-cutting just below the top oftlie dots, creatine what is known asa collar-button dot. It is quiteimpossible to make a satisfactoryelectro from this type of etching,mi account of the shoulder of eachdot holding back the mould. Theresulting electro would be…
Printing
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