Hacksaw

Hacksaw Points : Hacksaw, Definition For cutting metals such as conduits, cables etc., the wooden saw is not suitable and for such purpose a hacksaw as shown in Fig. is used. The hacksaw frame is adjustable and carries a blade of tool steel. The blade is usually gripped into the frame by means of wing nuts. The blade is usually 30 cm. long with 18, 24 or 32 teeth to an inch. The less numbered one are used for coarse jobs while more numbered ones are used for fine cuts.

When cutting with hacksaw, make full strokes while pushing the saw away for you and no pressure should be applied on return stroke. For starting, an accurate cut should be made with a blade having 32 teeth an inch and later on, cut should be continued with a course blade. No double the coarse blade will cut faster; but if the cut is started with a coarse blade, the back strokes try to jump, thus spoiling the accuracy.