ASIMPLE turnbuckle which I devised and used on my monoplane glider can be easily made as follows: Take the spokes and nuts out of an old bicycle Turnbuckle made of a bicycle spoke. wheel. Twist the wire at the unthreaded end, so as to form a loop to receive one end of the bracing wires. For the other end, cut a strip from a piece of sheet iron, 3 inches long and % inch wide, punch a hole in the center to receive the threaded end of the wire. Punch a small hole at each end of the strip to receive the other end of the bracing wires. Now bend the strip as shown in the illEstration, and put the nut in place. You will then have a small, neat, strong turnbuckle, which can be used for many purposes.