The practical electroplater A comprehensive treatise on electroplating, with notes on ancient and modern gilding, and formulas for new solutions . ndition and composi-tion of the metal, but he must also realize the value ofevery stroke of his hammer, in order to avoid battering ordamaging the face of the plates. In order to locate the sinks or low spots, the surface ofthe plate is rubbed lightly with a hard rubber (such as isused for ink erasers) to which a small wooden block is SHAVING THE PLATES. 247 glued. By this means low spots are left unpolished, andmay be indicated on the back opposite
The practical electroplater A comprehensive treatise on electroplating, with notes on ancient and modern gilding, and formulas for new solutions . ndition and composi-tion of the metal, but he must also realize the value ofevery stroke of his hammer, in order to avoid battering ordamaging the face of the plates. In order to locate the sinks or low spots, the surface ofthe plate is rubbed lightly with a hard rubber (such as isused for ink erasers) to which a small wooden block is SHAVING THE PLATES. 247 glued. By this means low spots are left unpolished, andmay be indicated on the back opposite the sinks by meansof a calipers or markers used expressly for this purpose,after which the plate is turned over and tapped lightly onthe back and cleaned with a stiff brush in order to free itfrom any particles of metal or grit, which, if allowed to re-main, would be liable to be imbedded in the surface of theplate in the operation of beating up the sinks or low spots. The plate is now laid face down on the steel slab, or ona thin cardboard laid in the steel slab, and the places markedon the back by the markers are carefully beaten up to a. Mold Brush. true surface with the face by means of the ball end of ahammer or punch, after which the sides and ends arebrought up and the plate made level with a straightedge. Shaving the Plates. After the plates are finally straightened they should beshaved to a standard gauge—say, small pica. It is important that the knife in the shaving machineshould be set perfectly true, and all the plates shaved tothe same gauge (except titles, half titles and copyrightpages, which should be shaved a thick paper lower); if thisrule is followed every press in the office may be set to the 248 THE PRACTICAL ELECTROPLATER. same gauge, otherwise the cost of presswork will be greatly-increased by unnecessary overlaying and underlaying ofplates. Beveling the Plates. The plates having been shaved to the desired thickness,a proof is taken on a hand press, af
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisheretcetc, bookyear189
