The speed of operating hacksaw should be 40 to 50 strokes per minute.Contact between the blade and the job should be in such a way that at least two teeth should remain in contact with the surface of the job.You should stand on the left hand of the vice and keep your right foot backwards and the left foot a little ahead of the right.After marking with the support of thumb we should hold the handle with right-hand palm and fingers and with the left-hand palm and fingers, we should hold the other end of the hacksaw frame as shown in fig.It would ensure that the blade would move only on the line there would be no risk of its slip. Before starting a cut with a hacksaw blade, the blade should be kept on the marking line, the left-hand thumb should be placed with its support as shown in fig.The job should be held in the vice in such a way that its cutting lines are clearly visible.While fixing the blade on the frame it should be ensured that its teeth should cut the metal when they are driven forward.Selection of hacksaw blade should be done according to the metal for which it is to be used.Methods of Using Hacksawįor the efficient cutting the following points should be borne in mind: This type of setting is done on blades of fine grade and superfine grades. In this type of setting a few teeth are bent to the right and a few to the left. In this type of setting, two teeth are turned to the right and two to the left and one dent between them is left straight, which performs the function of clearing the metal particles from the slot. This type of setting has been shown in fig. This tooth helps in cleaning the metal particles from the slot. In this type of setting, one tooth is bent to the left and the next tooth to the right and every fifth tooth is kept straight. The setting of teeth in a blade is done in three ways. If the setting is not done, there is a great risk that the blade would get stuck in the metal and get broken. Therefore, because of this slot, the blade does not get stuck while operating it.

Glass head pins for quilting