this way, of course, savesan immense amount of cutting, thereby economizing ontime and the wear of cutters. When, however, only one PATTERNS FOR CAST GEARS 109 gear of a particular size and pitch is wanted, it is notprofitable to do this; in this case the pattern is cut to theexact size of the… … FiG. 56. ticular case. Consequently, in preference to a gear ofany specific size, gears of the last mentioned kind willbe considered. The part to be considered first is the rim or periphery of the wheel, to which the teeth are fastened. There 110 WOOD PATTERN MAKING are several ways that this may…
Patternmaking
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