Shop practice for home mechanics, use of tools, shop processes, construction of small machines. Contains a chapter also on theoretical mechanics and on miscellaneous information relative to shop work (1920)
Yates, Raymond F. (Raymond Francis), 1895- · New York, N. W. Henley Pub. Co. · leaf 74
il break the tap. What isknown as a drill gauge can be used to determine the The Use of Miscellaneous Tools 73 proper size drill to use for all sizes of taps. A drillgauge is shown in Fig. Tr. Each hole in the gauge rep-resents a drill of a certain size and beside this hole is acorresponding tap… … Fig. 76—Using a small tap in a tap wrench be found suitable for this purpose and the tap should bedipped in it before cutting is started. A very useful little kink is illustrated in Fig. 78. Thisis for guiding the t^ps so they will enter the hole straight.A hole the proper size (not too large) is…
Machine-shop practice · Handicraft
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