Any person wishing to make a picture frame, or to cut down an old one, requires a miter box for that purpose, so that the molding may be properly held while sawing it, and also for nailing the corners together. I made a miter box, as shown, and found it to be just the thing for this purpose. It is built on a base similar to an overturned box, the saw guides being held on the ends of a piece, constructed as shown at A. Holes are cut in the top, as shown at B, for one of the guides and for the two wedges. Two pieces, C, are fastened with their outer edges at perfectly right angles on the top.

Homemade Miter Box for Sawing Frame Molding and to Hold the Parts for Fastening Together

The frame parts are clamped against the pieces on top with the wedges driven in between the frame parts and the brackets DD. After cutting the frame parts they are tightly held in place while fastening them, in any manner desired.—Contributed by A. S. Thomas, Amherstburg, Can.

Tank-Development Methods Used in Tray Development

If there are a number of plates to be developed, place a rubber band, about 1/8 in. wide, around the ends of each plate and put them together in a tray. The bands keep the plates apart. The developer is made up as for a tank and poured over the plates, then another tray, or dark covering, is placed over the top. Allow this to stand, rocking the tray from time to time, the same length of time as is required for tank development.—Contributed by Earl R. Hastings, Corinth, Vermont.

A Pushmobile Racer for Ice

The pushmobile shown in the illustration takes the place of the one with rollers that is now so popular with the boys. The materials required, usually found about any home, consist of a foot board, 1 in. thick, 2-1/2 in. wide and 2 ft. long; two pieces of wood, each 3/4 in. thick, 2-1/2 in. wide and 9 in. long; one steering post, 1 in. thick, 1-1/2 in. wide and 30 in. long; one handle, 6 in. long; one small hinge; one carriage bolt, 1/2 in. in diameter and 2-1/2 in. long; two 1/2-in. washers; a few screws, and a pair of discarded ice skates.

Homemade Pushmobile, Constructed the Same as the Wheeled Kind, with Runners for Snow and Ice