The object of the device illustrated in Fig. 54 is to enable one to obtain a true edge with a scroll saw.

On the saw plate is clamped a semicircular guide, by means of two thumbscrews. The guide plate should be raised from the saw plate about 1/8 of an inch by running several washers on the -crews between the two plates, so that the article to be cut may be slid under the guide, as is hereafter explained. Two slots about 3 inches long should be made in the guide to receive the -crew- and permit adjustment of the plate.

A -trip of 1/4-inch walnut about two feet long and one inch wide i- procured and a quarter inch slot is cut in it. extending nearly its entire length. A thumbscrew is fitted to run in this groove and engages a block which is adapted to slide along the under side of the strip. At one end of the strip a permanent block is fastened.

To make a straight cut in a board at any prescribed angle with one of its edges the walnut strip is fitted to it parallel to line line of the desired cut and so that the two opposite extremities of the board are clamped between the permanent block and the adjustable block. The guide plate is then clamped in position, its edge parallel to the plane of the saw, at such a distance that when the strip is placed against the edge of the guide, the saw will exactly coincide with the line to be sawed.

Fig. 54 - Scroll-saw guide.