How to Make a Copper Bowl
To make a copper bowl, such as is shown in the illustration, secure a piece of No. 21 gauge sheet copper of a size sufficient to make a circular disk 6-1/2 in. in diameter. Cut the copper to the circular…
Disappearing Coin Trick – How to Disappear a Coin
While this is purely a sleight-of-hand trick, it will take very little practice to cause the coin to disappear instantly. Take a quarter of a dollar between the thumb and finger, as shown, and by a rapid twist of the…
Homemade Compass – How to Make a Homemade Compass
Magnetize an ordinary knitting needle, A, and push it through a cork, B, and place the cork exactly in the middle of the needle. Thrust a pin, C, through the cork at right angles to the needle and stick two…
How to Build a Rabbit Trap
How to Make a Self-Setting Rabbit Trap Secure a good-sized box, say, 1 ft. high, 1-1/2 ft. wide, and 3 ft. long; and to the bottom, about 10 in. from one end, fasten a 2-in. square piece, A, Fig. 1,…
Homemade Air Thermometer – How to Make a Homemade Thermometer
The illustration shows the complete thermometer. The water in the glass tube is caused to rise and fall by the expansion and contraction of the air in the tin box. Excerpt from the book: THE BOY MECHANIC VOLUME I…
How to Make a Tangent Galvanometer
How to Make a Tangent Galvanometer -Excerpt from the book: THE BOY MECHANIC – VOLUME I 700 THINGS FOR BOYS TO DO WITH 800 ILLUSTRATIONS 1913, BY H. H. WINDSOR CHICAGO POPULAR MECHANICS CO. PUBLISHERS – – – Secure a…
How to Waterproof Canvas – method used by the British navy yards
The method used by the British navy yards for waterproofing and painting canvas so it will not become stiff and cracked is as follows: One ounce of yellow soap and 1/2 pt. of hot water are mixed with every 7…
Mission Library Table – How to Make a Mission Library Table
The mission library table, the drawings for which are here given, has been found well proportioned and of pleasing appearance. It can be made of any of the several furniture woods in common use, such as selected, quarter-sawed white oak…
How to Make a Hygrometer
Mount a wire on a board which is used for a base and should be 3/8 by 4 by 8 in., as shown in the sketch. A piece of catgut—a string used on a violin will do—is suspended from the…
How to Make an Induction Coil
A small shocking coil, suitable for medical purposes, may be constructed of materials found in nearly every amateur mechanic’s collection of odds and ends. The core, A, Fig. 1, is a piece of round soft iron rod about 1/4 in.…