. The 20th century toolsmith and steelworker; a complete, practical, and scientific book. Fig. 105. The wire nippers. bright and draw the temper over the fire very slowlyand evenly to a light blue, making sure that the cuttingedges or teeth are properly tempered. These instruc-tions will apply to all similar tools. 176 THE TWENTIETH CENTURY How to Make a Razor. To make an ordinary razor use steel 3-16 by 7-16 ofabout 75 points carbon. After the shank is fulleredin a little for the finger hold, then forged to shape, theblade is formed into shape by bending the steel a littleedgewise, afterwards
. The 20th century toolsmith and steelworker; a complete, practical, and scientific book. Fig. 105. The wire nippers. bright and draw the temper over the fire very slowlyand evenly to a light blue, making sure that the cuttingedges or teeth are properly tempered. These instruc-tions will apply to all similar tools. 176 THE TWENTIETH CENTURY How to Make a Razor. To make an ordinary razor use steel 3-16 by 7-16 ofabout 75 points carbon. After the shank is fulleredin a little for the finger hold, then forged to shape, theblade is formed into shape by bending the steel a littleedgewise, afterwards being forged, hammered andhardened, as is explained in making butcher knives. Fig. 106. The razor. (which will be found in another chapter of this book),draw the temper to a purple. A razor is hollow groundafter being tempered and which should be done by anexpert, if a razor is made after these instructions andthe hollow grinding done without drawing the temper,it will hold a very keen edge, which will equal anyrazor manufactured. End view, Fig. 106, illustratesshape of razor blade before being hollow ground. To Make a Scraper. A scraper for taking off paint, grease, etc., off boilerplate or any other material and leave a bright smoothsurface, is chiefly made from octagon steel, the size ofsteel used according to the width of scraper required,although for an ordinary scraper % octagon will make one, forge the steel perfectly flat % thick andabout 3 inches in length and 1 inch wide. The end ofthe tool is left perfectly square, the scraping or cut-ting edges being the corners, which are ground verysharp. TOOLSMITH AND STEELWORKER 177 To harden, heat to abou
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