It is now a simple thing to slip the end-plates in place under the side-plates, until their outside edges are even with the outside of the corner-posts and their notched ends under the side-plates, and resting snugly upon the tops of the inside pieces of the corner-post. A long wire-nail driven through the top-plates and end-plates down into the posts at each corner will hold them securely in place. Toe-nail a rib between the two nearest end-posts, and make two window-studs and three ribs for the opposite end. The framing now needs only the roof-timbers to complete The Skeleton of Your Shop. Across, from side-plate to side-plate, lay some loose boards, for a platform; then, standing on these boards, let your assistant lift one end of the ridge-plank, while with one nail to each rafter you fasten the two end-rafters on to the ridge-plank, fit the jaws of the bird’s-mouth cuts (Fig. 71) over the ends of the side-plates, and hold them temporarily in place with a “stay-lath”--that is, a piece of board temporarily nailed to rafter and end-plate. The other end of the ridge is now resting on the platform at the other end of the house, and this may be lifted up, for the single nails will allow movement and play to the posts. [Illustration: FIG. 72.--Machine-Shop.] The Rafters are next nailed in place, with one nail each, and a stay-lath fastened on, to hold them in place. Now test the ends with your plumb-level, and when they are found to be correct, nail all the rafters securely in place; stiffen the centre pair with a piece called a collar (see Fig. 69). Add four purlins (Fig. 69), set at right angles to the rafters, and take off your hats and give three cheers. But do not forget to Nail a Green Bough to your Roof-tree, in accordance with the ancient and time-honored custom. The sides of the house may be covered with the cheapest sort of lumber, and roofed with the same material, but if you can secure good stuff, use 13 × 7/8 × 9-1/4-inch tongue and grooved, one side planed so that it may be painted; you can make two side-boards out of each piece six feet six inches in length. Nail the sides on, running the boards vertically, leaving openings for windows and doors at the proper places. If you have made a triangular edge to your ridge-stick, as in Fig. 70, it will add to the finish, and the roof may be neatly and tightly laid, with the upper edge of one side protruding a couple of inches over the opposite side and thus protecting the joint from rain. Additional security is gained by nailing what are called picket-strips (7/8 × 1-3/4 inches) over each place where the planks join. Lack of space forbids me to go into many details, such as the manufacture of the door and the arrangement of windows, but these small problems you can easily solve by examining doors and windows of similar structures. [Illustration: FIG. 73.--Carpenter-Shop.]