How did Luban invent that plane?

1 According to legend, once Luban went to the mountains to cut down trees and accidentally cut his hand by the leaves of a wild grass. He picked the leaves and touched them gently. It turns out that there are sharp teeth on both sides of the leaf, and his hand was cut by these small teeth. He also saw a big locust on a piece of wild grass, and many small teeth were arranged on two big dies, which could quickly grind the leaves. These two things inspired Lu Ban. He thought, if there is such a toothed tool, wouldn't it be able to cut trees quickly! So, after many experiments, he finally invented a sharp saw, which greatly improved the efficacy.

It has been circulated among the people for 200 years. Legend has it that one year, Luban accepted the task of building a huge palace. The palace needed a lot of wood, so Lu Ban sent his disciples up the mountain to cut down trees. Since there was no saw at that time, his disciples had to use axes to cut, but the efficiency was very low. The craftsmen had to work hard every morning. I'm exhausted. I can't cut down many trees, which is far from meeting the needs of the project. The progress of the project has been delayed again and again. Seeing that the project deadline is getting closer and closer, I am anxious for Luban. To this end, he decided to personally go up the mountain to see the situation of cutting trees. When going up the mountain, he accidentally caught a handful of weeds growing on the mountain, but suddenly cut his hand. Lu Ban wants to know why a grass is so sharp. So he picked a leaf and observed it carefully. He found many small teeth on both sides of the leaf. These little teeth are very sharp when he touches it gently. He knew that his hand had been cut by these small teeth. Later, Lu Ban saw a big locust eating leaves in a meadow. The two large molds are very sharp. As soon as they opened and closed, they quickly ate a big piece. This also aroused Lu Ban's curiosity. He caught a locust and carefully observed the structure of its teeth. He found that locusts also had many small teeth on their two big dies, which were used by locusts to bite grass leaves. These two things left a deep impression on Lu Ban, and also gave him great inspiration. He fell into deep thinking. He thought, if the tool for cutting wood is serrated, isn't it sharp? It will be much easier to cut down trees. So he made a bamboo with many small serrations from a big bamboo, and then went to a small tree to do experiments. The result is really good. After a few quick tugs, the bark was torn, and after a few more tugs, a deep ditch was made in the small tree stem. Luban is very happy. However, bamboo can not be used for a long time because of its softness and poor strength. After pulling for a while, some small serrations are broken and some are dull, so it is necessary to replace bamboo. This affects the speed of cutting down trees, and it is also a great waste to use too many bamboo chips. It seems that bamboo is not suitable for making sawtooth, so we should find a material with higher strength and hardness to replace it. At this time, Lu Ban thought of the iron sheet. So they immediately went down the mountain, and the blacksmith helped to make small serrated iron pieces, and then went up the mountain to continue their practice. Lu Ban and his apprentice each pulled one end and pulled it up on a tree. I saw them coming and going, and soon I sawed off the tree, which was quick and labor-saving, and the saw was invented. Before Luban, many people must have been cut off by Mo Ye. Why only Luban was inspired by it and invented the saw is undoubtedly worthy of our consideration. Most people just think that this is a trivial matter in life and it is not worth making a fuss about. After the wound heals, they tend to forget it. However, Lu Ban has strong curiosity and correct ideas. He paid great attention to observing, thinking and delving into some small things in life, from which he found ways and ideas to solve problems and even obtained some creative inventions. This tells us a truth. Paying attention to many trivial things in life and thinking seriously will increase a lot of wisdom. Agree 4| Comment (1)