The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States (1895)
Farquhar, H. D. (Harry D.), Eder, Josef Maria, 1855-1944 · London : Dawbard & Ward · leaf 91
mooth roller. The rough ones are scraped with a knife until their surface has a rough and ragged appearance. To prepare before use they are rolled up in castor oil and No. 2 Litho varnish four or five hours until the leather becomes somewhat softer and has more suction. The older rollers are, the… … Fig. 38 is made by nailing a block on each end of a strip of wood about three inches wide and of a suitable length. Buffer. In order to get better results and save time m polishing zinc an apparatus to be run by power constructed on the plan as shown in Fig. 39 will give good results. The zinc, A,…
Photoengraving
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
