Woodworker's Journal 1993-17-2, страница 49
shrink, the resulting force could split the sides, or push out the rails or back. Assemble the Sides. Rails and Runners Once the dry assembly looks okay, the rails and runners can be assembled to the sides. Give the parts a good sanding, particularly the inside surfaces that will be difficult to sand after assembly. Assemble the rails first. At a point in. from the front edge of the sides, drill a '/s in. deep counterbored hole to accept a 3A in. long by no. 6 flathead wood screw. As shown, one screw is driven into each rail end. .Add a thin coat of glue to the joint before adding the screws. When dry. glue a wood plug in each of tile counterbored holes and sand them flush with the surface. Next, assemble the runners. If glued in place along their entire length, the runners will prevent the sides from expanding and contracting with changes in humidity, and that could cause the sides to crack. To allow the necessary movement, secure each runner with three. 1 in. long brads (front, hack and center), adding glue only to the frontmosl 1 in. length of each one (see Exploded View). To lessen the chance of splitting the runners, you'll first want to bore pilot holes for the brads. Note that the brads are driven through the runners and into the sides. Brads work nicely here, not only because they hold the parts securely, but also because they are able to flex a little, thereby enabling the sides to expand and contract without much danger of splitting. Make the Apron. Back and Top The apron (D), back (E) and top (F) can now be cut to size. At this point you'll want to take your length and width dimensions from the assembled project. We used 'A in. thick birch plywood for the back. Use a compass to scribe the 1in. radius on each end of the cutout (see Back View ), and cut it out with the band saw. jig saw or scroll saw. Now, use the table saw and dado head cutter to cut the 'A in. deep by l/2 in. wide rabbet on each end of the apron. The miter gauge supports the stock while making the cut. The 3/i6 in. chamfer on the top and ends can be applied using the router table and a 45 degree chamfer bit. After the edges are chamfered, transfer the full-size cutout pattern from the drawing to the apron, then cut it out with the band saw. File and sand the edges smooth. Final Assembly Give ihe apron, back and top a thorough - H -1414-- —J o o
March/April 1993 Please circle No. 8 on the Reader Sen il e Card 49 |
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