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 76
Hole fo be lapped--Fig. 78—How a wooden block is used to guide a tap The Use of Miscellaneous Tools ID is kno\^^l as a bottoming- tap and it lias loractically notaper except on the first thread. The nse of the plug _jJpiAf Jioiii ■i^ftwihJMAt jjirmTrnTi-imTTT^ Fig- 79—A taper tap is shown at the… … Fig. 80—A taper tap will not cut threads to the bottom of the hole taper tap prevents it from producing threads in the bot-tom of the hole. In such a case, the threads would be 76 Shop Practice for Home Mechanics started with a taper tap and after this was taken out theplug tap would be inserted…
Machine-shop practice · Handicraft
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