The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . is only when every detail of form, holding, and striking is clearly in the mind that it is economy to start on the iron. The required width of the jaw-opening may vary with the demands of the forges. The long handles may be welded on before the jaws are finished. Each class should leave the forges well furnished with tools for the next years class. Good tongs are evidence of good w^orkmen. No. 26. (Fig. 90.) Thedog. Stock, 1 round,about 4 long
The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . is only when every detail of form, holding, and striking is clearly in the mind that it is economy to start on the iron. The required width of the jaw-opening may vary with the demands of the forges. The long handles may be welded on before the jaws are finished. Each class should leave the forges well furnished with tools for the next years class. Good tongs are evidence of good w^orkmen. No. 26. (Fig. 90.) Thedog. Stock, 1 round,about 4 long. The holeis first punched, and then?enlarged by splitting, andworking over a mandrel. This dog is to be subsequently finished in the machine-shopby the 100 THE SECOND, OR MIDDLE YEAR. [Ohap. HI. Xo, 27. {Fig:. 91.) Cold chisel. Stock, I octagonal tool-steel. In forging steel, great care must be taken not to burnthe piece. Burnt steel is worthless. This exercise is first auniform draw to an edge. The operation of Tempering whichis tofollow should have many preliminary illustrations andexercises. Eveiy student should temper hischisel, even if he has to temper it several timesin order to get it right. Fig. 91.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmanualt, bookyear1906
