Note 15 — Chapter V
S. R. (Sylvester Rosa) Koehler translation
(p. 40.) I cannot direct the reader to a copper-planer, and therefore it will be best to give some directions for removing faulty passages. The following paragraphs are copied bodily from Mr. Hamerton:—
“The most rapid way is to use sandpapers of different degrees of coarseness, the coarsest first, and then the scraper, and, finally, willow charcoal with olive oil. The charcoal will leave the surface in a fit state to etch upon.
“This scraping and rubbing hollows out the surface of the copper, and if it hollows it too much the printing will not be quite satisfactory in that part of the plate. In that case you have nothing to do but mark the spot on the back of the plate with a pair of calipers, then lay the plate on its face upon a block of polished steel, and give it two or three blows with a hammer (mind that the hammer is rounded so as not to indent the copper).”