Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 112
k in the end of the piece, it is drilled and countersunk. Thismust be done very accurately, but frequently the drilled hole orthe countersink will not be in the exact center. See Fig. IKJ.This may be caused by uneven grinding of the drill, eccentricmotion of the drill point (due to the inaccurate… … qS MACHINE SHOP WORK. 79 nosed chisel ami a hainiiier. The method of doing tiiis work isas follows: After niakinsj the center punch mark, the iinle isdrilled and ilien countersuid< slightly. The work should now be Mi-
Mechanical engineering
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