How did the wooden ladder shape meet?

1, design the connection. Ancient craftsmen created a connection method, tenon-mortise connection. It is characterized by mortise and tenon embedding, which makes the structure have certain adaptability when bearing horizontal external force.

2. Make tenons. In the connection of two pieces of wood, the most important thing is the production of the lower dovetail joint. First, use a wire gauge to draw a connected mortise and tenon pattern on the first piece of wood. Wood is a half-dovetail joint and a half-stepped bayonet.

3. cut your mouth. Put the tenon of the first piece of wood on the woodworking table, and put the tenon of the second piece of wood on the woodworking table in the opposite direction. Then draw the tenon outline of the first wood on the wooden end of the tail tenon with a pencil, and then lead these lines to the wooden end with a combined square. Be careful not to forget to mark the "×" symbol in the waste part.

4. Assembly test. After tenons and mortises are made at both ends of two pieces of wood, carefully check whether the tenons and mortises are made carefully, especially to clean up the verticality of the right angle and the sawdust on it.

5. done. In some ancient buildings, dovetail joint was skillfully used to splice two columns into a big wooden column. After all, no matter how big the wood is, it is also limited by height.