Guide for Using the Edge of Worn-Out Files on Small Round or Square Stock
If such a guide is fitted tightly on a file, the edges of worn-out files can be used for such work, and the file cannot slip off and mar the sides of the work.—Contributed by A. R. Drury, Hampton, Ill.
A Simple Motion-Picture Machine
The drum A is a piece of wood, 1-3/4 in. long and 1-3/16 in. in diameter, supported on the end of a round stick, B, which can be made in one piece with the drum, if a wood lathe is at hand, but a piece cut from a curtain pole and a lead pencil inserted in a hole bored in the end will answer the purpose. Be sure to have the diameter of the drum 1-3/16 inches.
The Parts for Making the Revolving Drum for Holding the Strip of Pictures
Provide a base piece, C, 1/2 in. thick and 2 in. square, and fasten a piece of cardboard having a slit E, as shown. The cardboard should be 2 in. wide and 2-1/2 in. high, the slit being cut 1/2 in. in width, 1/4 in. from the top and 3/4 in. from the bottom. A hole is bored in the center of the block to admit the standard B easily.
The next step is to provide the picture and attach it to the drum. A picture of a boy pounding cobblestones is shown in the sketch, at F, which should be made on a strip of paper 4-3/8 in. long. This is glued or attached with rubber bands to the drum. The drawing can be enlarged in pen and ink, or can be reproduced as it is, if a hand camera is at hand, and a print used on the drum.
