[76] The S. S. White Dental Mfg. Co., 5 Union Square, New York, sells them, and unvulcanized rubber as well.
Mounting the Rubber.
—All that you need to do now is to trim off the edges of the rubber stamp with a pair of shears and mount it on a smooth block of wood having a handle as shown in [Fig. 77].
Fig. 77. the rubber stamp ready to use
How to Use a Rubber Stamp.
—A special kind of ink is used for rubber stamps, as writing ink is too thin and printing ink spoils the rubber.
To Make an Ink Pad.
—Cut out two blocks of pine wood each of which is ¹⁄₄ inch thick, 2 inches wide and 3 inches long; cut out four strips of woolen cloth 2 × 3 inches, lay two of the strips on each block and then cover the latter by gluing a piece of muslin over it.
Pour a dozen or 15 drops of rubber stamp ink on each pad and rub the surfaces of both of them together to distribute the ink evenly. When not in use keep their inked surfaces together and in a box so that the dust will not get on them.[77]