Reinforce the joints with a carriage bolt, washer, and locknut, centering the hardware on the joints. Fasten the front-most and rear-most seat slats to the three-seat frames with a single to cover the screw heads later. Complete swing sets are sold on eBay with a frame for holding the swings. Let’s get the swing frame assembled! Install a wide dado blade on your table, notice, and raise it to Check the blade top on two 3/4″-thick scraps with a few cuts to ensure the faces will likely be flush with each other when the lap joints are assembled. It’s easiest to make these lap joints before shaping the components further.
Once the entire lap joints are lower and test-fitted, follow the gridded Drawings on page 35 to plot factors and lay out one seat assist and one seat back on two workpiece blanks. When the lap joints dry, sand the frames easily. Choose the perfect face of each slat as the “show” face, and sand these faces smooth. Use a large porch swing French curve or a versatile wood batten to connect the dots with smooth curves to form the two contoured shapes. Now use the shaped workpieces as templates to attract the remaining two sets of the seat helps and backs in your other 4 workpieces. Mark the seat supports and backs for the lapped areas to be eliminatedIdea it’s the again four 1⁄4″ of the seat supports and the bottom 3-3⁄4″ of the seat backs, measured along their edges.
The seat supports and backs are connected by an angled half-lap joint at their corners. Subsequent, rip and crosscut 22 seat slats to width and size. Contact the round overs by hand-sanding to remove any burn marks left from the router bit and spherical over the corners of the seat slats if you want. Assemble the elements into three-seat frames with glue and clamps. Reduce the seat support and sit again at a band saw or jigsaw. Begin by angle-reducing one end of the workpieces to 15˚, both at a miter noticed or at a table noticed using a miter gauge. Ease their edges with a 1/8″ round-over bit on the router desk to help forestall splinters.