ack edges of the covers across the back of the book.

Place the cardboard covers on the back of the covering the proper
distance apart as measured for the back, and mark around each one.
Spread thin coat of glue on the surface of each and lay them on by
the marks made. Cut a notch out of the covering so it will fold
in, and, after gluing

[Illustration: The Bound Book]

a strip of paper to the covering between the covers to strengthen
the back, fold over the outside edges of the covering and glue it
down all around.

Place the cover on the book in the right position, glue the hinges
fast to the inside of the covers, then glue the first flyleaf to
the inside of the cover on both front and back and place the whole
under a weight until dry.
--Contributed by Clyde E. Divine, College View, Nebr.

** Metal Coverings for Leather Hinges [41]

A method of making a leather hinge work as well as an ordinary
steel butt is to cover the wings with sheet metal. The metal can
be fastened with nails or screws over the parts of the leather
attached to the wood. Tinplate, iron

[Illustration: Metal Parts Screwed on Leather Hinge]

hoops, zinc or thin brass cut in neat designs will make a leather
hinge appear as well as a metal hinge.
--Contributed by Tom Hutchinson, Encanto, Cal.

** Removing Plaster from Skin [41]

A hot-water bottle held against a porous plaster will assist in
quickly removing it from the skin.

** How to Make a Cheap Bracket Saw [42]

For the frame use 3/8-in. round iron, bending it as shown in the
diagram and filing a knob on each end, at opposite sides to each
other, on which to hook the blade. For the blade an old
talking-machine

[Illustration: Hacksaw Frame and Blade]

spring or a clock spring will do nicely. Heat the spring enough to
take some of the temper out of it, in order to drill the holes in
the ends, as shown, and file in the teeth. Make the blade 12 in.
long, with 10 teeth to the inch. A and B show how the blade fits
on the frame. -Contributed by Willard J. Hays, Summitville, Ohio.

** How to Make a Cannon [42]

A cannon like the one in the cut may be made from a piece of 1-in.
hydraulic pipe, A, with a steel sleeve, B, and a long thread plug,
C. Be sure to get hydraulic pipe, or double extra heavy, as it is
sometimes called, as common gas pipe is entirely too light for
this purpose. Don't have the pipe too long or the cannon will not
make as much

[Illustration: