Small engines and boilers; a manual of concise and specific directions for the construction of small steam engines and boilers of modern types ... for amateurs and others interested in such work (1899)
Watson, Egbert P. (Egbert Pomeroy) · New York, D. Van Nostrand company · leaf 47
In selecting drills for tapped holes, take a drillthat will just fill the screw-die without shake, thenthe thread will be full. For steel it should be atrifle larger than for cast-iron or brass, for thesteel is tough, and taps are apt to break if theholes are too small. SMALL ENGINES AND BOILERS. … -Bottom-of-Chest * Fig. 8. SMALL ENGINES AND BOILERS. 31 In drilling all holes that are blind, that is, arenot through holes, look out and not go too far;measure the exact depth of the hole, and makea slight mark on the drill shank as a cruide indrilling. In making bolts for studs that are to be…
Steam-engines
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