3.Add the windows. Salvage some old wood and glass windows (6-pane or similar). Fit them at the center of each of the 3 walls and mark their width. Then, create a frame for the window using 1 by 4 in (2.5 by 10.2 cm) boards. The height should be the same as the window and distance between the bracing beams (accounting for the width of the frame itself). Nail the frame into position, fit the window in, and set it in place by placing nails on either side.
5. Attach the upper beams. Glue these together and then join them to the top of the posts using 1 or 2 bolts placed through the square and into the posts.
1.
The nails should stick up by 1⁄4 inch (0.64 cm). Fit them as close as possible to the window itself so that the window won’t move. Use 3 or 4 for each side of the window. You can seal it with wood glue or caulk if you want to.
4.
1.Building the roof Get 5 more 4 by 4 in (10 by 10 cm) beams. Select 4 beams at 6 ft (1.8 m) and 1 in (2.5 cm) length and 1 at 8 feet (2.4 m) and 7 inches (18 cm). Cut a 45° angle into one end of each of the 4 beams.
2. 4.Cut the upper beams. You will need 4 more beams to join the posts at the top. These should be roughly 8 feet (2.4 m) and 7 inches (18 cm) long. Cut a 3.5 by 3.5 by .75 in (8.9 by 8.9 by 1.9 cm) square into the ends of each of the 4 beams. The cuts should be made on the same side of each beam. Use these cuts to fit the pieces together like a puzzle, the 2 indented ends fitting together. This is called a half-lap splice joint.
5.
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2.Bolt the flat side of the shorter beams to the ends of the longer beam. Make 2 triangles that are joined by the 8 ft (2.4 m), 7 in (18 cm) beam running between them. Make sure that you keep the 45° angles in mind, as they will need to be able to sit flat on the top of the walls. The bolts should be at least 1 inch (2.5 cm) apart.
