16 - Custonize Your Radial Arm Saw, страница 4
Hardware • (6)#&xV2"Fh Wood screws • (1)1/4"x13/4"Fh Machine Screw • (2) 1/4" Washers • (1) 1/4" Lock Nut • (1) 1/4" X 11/2" Carriage 3o\t • (1) V4" Hex Nut • (2) 1/4"x PA" fender Washers • (1) V4" Plastic Wing Nut Circular Saw Cut-Off Jig You can turn your portable circular saw into a precision tool ivith this shop-built accessory. STOP SHOE BASE lar saw — getting a perfectly straight cut that follows the layout line exactly. reference. What makes it work is the edge of the jig serves as a reference to indicate the path of the saw blade. As a result, there's no guesswork when setting up. Just mark the board, position the edge of the jig on the line, and make the cut. (For more on using the jig, refer to the boxes on page 7.) angled cuts. Although I use the jig most often to make 90° cuts, it's designed to make angled cuts as well, see inset photo. In fact, this makes the jig so handy that it recently disappeared for REFERENCE EDGE It's hard to beat a radial arm saw (or power miter saw) for making a crosscut on a long board. But if you don't have one of these tools, this can be a real challenge. Even though a table saw has the advantage of built-in accuracy, using it to cut a long work-piece is awkward at best. And if you make the cut with a portable circular saw, the results are often less than perfect, To combine the accuracy of a table saw with the portability of a circular saw, I made a simple cut-off jig, see the photos above. This jig solves one of the biggest problems of using a circu several days when one of the guys needed to miter the ends of the construction lumber he was using to build a deck. CONSTRUCTION Basically, the cut-off jig consists of four parts: a base for the saw to ride on, a fence that guides the saw, and a curved arm and edge guide that work together to make the jig adjustable, see the Exploded View below. base. I began work by making the base (A) from a piece of Vg" Masonite, see Fig. 1. Since I wanted the jig to span a 2x12 when cutting a 45° miter, I made the base 22V2" long. And since the first cut is EXPLODED VIEW 1/4" x 13/4" MACHINE SCREW FENCE V4" PLASTIC WING NUT NOTE: FENCE GUIDES EJASE OF SAW #& x Vz" Fh - WOODSCREW 4 ShopNotes No. 16 |
