Orthodontia Or Malposition of the Human Teeth Its Prevention And Remedy
The book Orthodontia Or Malposition of the Human Teeth Its Prevention And Remedy was written by author Simeon Hayden Guilford Here you can read free online of Orthodontia Or Malposition of the Human Teeth Its Prevention And Remedy book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Orthodontia Or Malposition of the Human Teeth Its Prevention And Remedy a good or bad book?
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wre taps for threading nuts. They cut a clean, sharp, coarse thread, gauge . 050 of an inch. MATERIALS AND CONSTRUCTION'. 97 PREPARATION OF MATERIAL. Wire Drawing. Wire may readily be drawn down from a larger to a smaller gauge by means of the draw-plate and draw-tongs ( See Fig. 38 ). Before using the draw-plate the holes should be filled with melted bees-wax or equal parts of bees-wax and tallow to act as a lubricant. It is then clamped firmly in the bench-vise. The wire after being annealed ...should be reduced at one end by filing or ham- mering and the pointed end passed through the hole in the draw-plate next less in diameter than the wire itself. It is then grasped by the tongs or pliers and drawn through with a continuous and steady pull. In similar manner it is drawn through the successively smaller holes until the desired gauge is obtained. After each two or three draw- ings the wire should be annealed. Steel wire cannot be drawn by ordinary methods on account of its hardness, but it can be bought in all sizes.
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