Book 2 — Use for Pencil Stubs

In mechanical drawings cast iron is indicated by a series of straight lines across the parts made of this material. These lines can be quickly made with the usually discarded pencil stubs, if these are saved and sharpened in the following manner: The point is filed flat, as shown at A; then a slot is filed in the center of the lead with a knife file, as shown at B, and the points sharpened as in C. In this way two lines are drawn at one stroke neatly and in half the time.—Contributed by J. Kolar, Maywood, Ill.

To sharpen a carving knife draw the edge through and against the open edge of a pair of shears.