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TWISTS AND SPIRALS 85 to fit the bar being twisted, the result being that the edge of the twisted part is now at right angles to the flat part of the bar. The twisting is done while the stock is cold, and soft steel should be Fig. 48. Twisting Flat Bars used, as iron will not stand the strain of the twisting. The main thing to look out for in twisting the bars is to have the turns at equal distances apart in order to have the mesh work equal. (See Fig. 49.) The size of mesh should be determined |
Hand Forging by Thomas F. Googerty