The Painter, gilder and varnisher's companion : comprising the manufacture and test of pigments, the art of painting, graining, marbling, staining, sign-writing, varnishing, glass-staining, and gilding on glass .. (1900)
Philadelphia : Henry Carey Baird & Co. · leaf 31
7 TOOLS AND APPARATUS. finely polished rollers of green porphyry, which are harder than steel, and possess the property of the color adhering well to them, in consequence of which the finest grinding and greatest capacity are attained. With f)roper treatment of the mill it is impossible for the… … The rollers revolve at different speeds and the front roller has besides a lateral motion to and fro. The quantity of oil required to grind colors into the stiff paste in which they are now generally sold varies considerably with different pigments, some requiring a comparatively small quantity of…
Painting, Industrial · Gilding · Varnish and varnishing · Pigments
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
