Etching craft; a guide for students and collectors (1922)
Robins, W. P. (William Palmer), 1882- · London, The Bookman's journal & print collector · leaf 54
of the acid is delayed through the thin filmof ground left by the needle protecting the copper there,while the fully exposed parts of the line are biting cor-rectly. Sometimes there are even gaps in the line whichwiU be found not to have bitten at all. I have endeavouredto show this in Fig. 8, page…
Etching · Etchers
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