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 100
95 THE GRAMMAR OF PHOTO-ENGRAVING. undercutting. When the second etching is completed and the plate dried it is ready for the third. This time the plate is powdered from all sides. Begin by powdering the same as described for the first etching, com- mencing at the top of the plate, Fig. 41. When… … Fig. 41 powder has collected on the plate raise slightly and tilt the plate as shown in Fig. 41 allowing the powder to slide from the top of the plate at 1, covering its entire surface, letting the surplus fall back into the box. It will be found upon examination that the powder has been caught on…
Photoengraving
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
