The Sloping Edges in the Notch Forces the Knobs Together and Holds Them While Inserting the Screws
A Finger-Nail Buffer
The flywheel on a sewing machine is usually turned with a semicircular face and this makes a good base on which to apply a piece of chamois skin for use in buffing nails. A strip of the chamois is cut the length of the wheel's circumference and small holes pierced in its edges, through which strings are run to hold it to the rim of the wheel. The chamois can then be removed or left on the wheel as desired. Run the machine and hold the nail on the buffer. When there is a free wheel on the machine this makes an excellent buffing device.
A Strip of Chamois Skin Attached to the Flywheel of a Sewing Machine for a Buffer
Grinding Chisel Edges
A cold chisel ground with a rounding edge, as shown, will last twice as long and do better work than one that is ground straight, because it will not wedge, and the cutting edge, having a better support, will not chip off.—Contributed by F. G. Marbach, Cleveland, O.
Reducing Amperage of a Fuse Wire
It is sometimes necessary to use an electrical fuse of smaller amperage than those at hand, and for experimental work this is often the case. A smaller amperage may be readily made from a larger-size wire by making a nick in it with the cutting edge of pliers, or with a knife. The illustration shows how to reduce the size of a 10-ampere fuse to make it five amperes.—Contributed by Louis Litsky, Brooklyn, N. Y.