Turning Lathes: A Manual for Technical Schools and Apprentices. A Guide to Turning, Screw-cutting, Metal-spinning, &c. With 194 Illustrations

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James Lukin
E. & F.N. Spon, 1888 - Lathes - 160 pages
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Page 158 - XVII., is a convenient tool for boring ; a small cylinder can be gripped in the vice and bored with accuracy by following the lines already given, but it is not well to stop until the cut is through. The remarks already offered concerning Ornamental Work apply even more forcibly to the use of the combination chuck.
Page 157 - XVIII.) until the flute is the required depth, then set it by the division holes for the next groove, and so on, until the job is completed. We will now suppose a slot is to be cut in a rod. Place the rod in the V gap, fasten down by the screws G.
Page 157 - XVII.) is used, and the centre line of the tap adjusted to the centre of the tool; or if the tap is a little below the centre of the tool, it gives a more decided cutting edge, thus, J (one size tool will do several sizes of taps).

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