American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 260
aterial from which the lap is made must be softer thanthe work. If this is not so, the abrasive will charge the work andcut the lap, instead of the lap cutting the work. The first class is used in the place of emery wheels, either wherethe work is too small to use an ordinary wheel or where a form… … Fig. I. —A Lapping Plate for Flat Work dust the sharp corners of the particles cause them to bed securelyinto the surface of the lap, and if a good quality of diamond is used,a lap will grind all day without recharging. Oil is used to lubricatethe work and carry away the dust from the grinding. If…
Machine-shop practice
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