Adams, John D. (John Duncan), 1879- · Chicago : Popular Mechanics Co · leaf 85
BRASS BOOKMARK line. Trace the design on the metal, using carbon pa- per, which gives the outline of the design Fig. 41. With the metal shears, cut out the outline as indi- cated by the drawing. With files, smooth off any roughness and form the edge so that it shall be nicely rounded. The parts of… … Sawing- the Metal hol, before the design is applied. Cover all the metal that is not to be lowered with a thick coating of as- phaltum. Allow this to dry, then put on a second coat. After this has dried thoroughly immerse the metal in a solution composed as follows : 3 parts water, 1 part sulphuric…
Metal-work · Etching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
