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The Boy Mechanic: Volume 1 - 700 Things for Boys to Do by Popular Mechanics Co.
page 64 of 996 (06%)

An ordinary hairpin is driven part way into a small round piece of
wood, about 3/8 in. in diameter and 2 or 2-1/2 in. long, for a
handle, as shown in the sketch. The hairpin should be a very

[Illustration: Hairpin In Stick]

small size. To operate, simply insert the wire loop into the
cherry where the stem has been pulled off and lift out the seed.
--Contributed by L. L. Schweiger, Kansas City, Mo.



** A Dovetail Joint [29]

The illustration shows an unusual dovetail joint, which, when put
together properly is a puzzle. The tenon or tongue of the joint is
sloping on three surfaces and the mortise is cut sloping to match.
The bottom surface of the mortise is the same width at

[Illustration: Shape of Tenon and Mortise]

both ends, the top being tapering toward the base of the tongue.
--Contributed by Wm. D. Mitchell, Yonkers, New York.



** Base for Round-End Bottles [29]

The many forms of round-bottomed glass bottles used in chemical
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