Set every other tooth with the point out, then reverse the saw and set the other side in the same manner. Place the saw in the vise with the teeth as close to the clamp as possible for filing to prevent vibration. File toward the point of the saw, keeping the points the same height and the front edge of the tooth slightly back from perpendicular by holding the file at the same angle for all teeth, hold the file back 20 degrees, and upright at nearly 25 degrees; the more the file is angled, the longer the point. Cut the same amount off of each tooth to keep them even. (Fig. 74.)

Fig. 74