Why can thatch cut fingers, and what are the stories of Luban?

Because the edges of the thatch are dense and sharp, the fingers are cut. Luban's Story:

One day, Luban went to a high mountain to look for wood, and suddenly his feet slipped, and he hurriedly reached out and grabbed a clump of thatch by the roadside. His hand was slid through the thatch, and blood was oozing. "Why is this humble thatch so sharp?

Forgetting the pain of the wound, he pulled up a handful of thatch and examined it carefully, and found that there were many sharp teeth growing from the edges of the leaves.

He used these dense little teeth to lightly scratch the back of his hand, and actually cut a cut. He thought: If I also sawed trees with a tool with many small serrations, wouldn't I be able to cut the wood very quickly? That's certainly a lot less effort than chopping with an axe.

So, Lu Ban asked the blacksmith to make dozens of iron pieces with sharp small serrations on the edges and take them to the mountains for experiments. Sure enough, the trees were quickly sawed off. Luban gave this newly invented tool a name called "saw".

Because thatch has jagged leaves and a grainy structure, like a saw, it cuts your fingers.

Once, when Lu Ban was completing an urgent construction task, he led his apprentices up the mountain to cut down trees for several days, but because the logging tools were backward, they got up early and were greedy for darkness and waved axes, but the wood was still not available, and he was very anxious.

At dawn one day, when Lu Ban was working, he was accidentally cut by the leaves of silk thatch. He plucked a blade of grass and found that the edges of the blade were full of jagged teeth. As soon as he turned around, he saw a large locust with two large teeth open, and was quickly eating the blades of grass.

Lu Ban caught a locust and saw that it also had sharp teeth on its teeth. Looking at the leaves of the silk thatch, and then at the big teeth of the locusts, his heart suddenly brightened.

He cut the bamboo into strips, carved many sawtooth teeth like silk thatch leaves and locust teeth, and used it to pull the tree, and in a few strokes, the bark broke; With one more force, a deep furrow was sawed out of the trunk. But after a long time, the serrations on the bamboo skin were either dull or broken. Lu Ban thought that if iron bars were used instead of bamboo bars, they would be very hard and durable.

So he immediately asked the blacksmith to make a serrated iron bar, and then used it to pull the tree, which was really sharp. This is the invention of the saw.

The thatched edges are zigzag, so it's easy to cut your fingers.

Legend has it that it was because Luban cut his hand with thatch that he invented the saw that is still used by carpenters today.

Because the edges of the thatch are saw-shaped, the hand will break.

Luban thus invented the saw.

The edges of thatch leaves have serrated teeth that can easily cut your fingers if you don't pay attention.

This weed is called silk thatch, and it has many sharp teeth on the edge of its leaves. When he reached out and grasped the edge of the thatch, he pulled back and forth, and the little tooth cut the skin of the finger. Don't look at this small tooth is not big, but the cutting force is not small.

Because the edges of the thatch are saw-shaped, the hand will break.

Luban thus invented the saw.

The story of Luban's discovery of sawgrass is as follows:

Legend has it that once when he went deep into the mountains to cut down trees, he accidentally slipped under his feet, and his hand was cut by the leaves of a wild grass, and blood oozed out. He plucked the leaf and touched it gently, it turned out that there were sharp teeth on both sides of the leaf, and he used these dense small teeth to lightly scratch the back of his hand, and actually cut a hole.

His hand was cut by these small teeth, and Lu Ban was inspired by this incident. He thought, if such a toothed tool could also cut through trees very quickly!

So, after many experiments, he finally invented a sharp saw, which greatly improved the work efficiency.

The story of sawgrass and saws.

Legend has it that Luban accepted the task of building a huge palace. Asking for a lot of wood, the apprentices went up the mountain to cut wood. Axe felling, inefficient.

I couldn't cut down many trees even if I tried my best to do it, the progress of the project was slow, the construction period was approaching, and Luban was in a hurry. It was decided to observe the logging situation for himself. While going up the mountain, he inadvertently grabbed a handful of weeds and scratched his hand.

Lu Ban felt very strange, why could a soft grass cut his hand? So he looked carefully and found that there were many small teeth on both sides of the leaf, and these small teeth were very sharp, and Lu Ban realized that it was these small teeth that cut his hand. Later, Lu Ban saw a locust eating leaves, the teeth were very sharp, and soon ate a large piece, which also aroused Lu Ban's curiosity, he grabbed a locust, carefully observed the structure of the locust's mouth, and found that the locust's two teeth were also lined with many small fine teeth, and the locust relied on these small teeth to bite off the blades of grass.

Because of these two things, Lu Ban was deeply inspired, so he used the big bamboo to make a bamboo piece with many small serrations, and then tried to saw the small tree, the result was good, a few times the bark was broken, and then a few more hard pulls, the small tree pole drew a ditch, Lu Ban was very happy. However, because the bamboo is soft and the strength is relatively poor, it cannot be used for a long time, and after pulling for a while, some of the small sawtooth is broken, and some of it becomes dull, and the bamboo piece needs to be replaced. This affects the speed at which trees are cut down, and using too many pieces of bamboo is also a big waste.

At this time, Lu Ban thought of the iron piece. So they immediately went down the mountain, asked the blacksmiths to make pieces of iron with small serrations, and then went to the mountain to try sawing trees. Lu Ban and his apprentice each pulled one end and pulled it up on a tree, only to see them go back and forth, and after a while, the tree was sawn off, quickly and labor-saving, and the saw was invented.

The saw was not invented by Lu Ban, and according to archaeological discoveries, the earliest metal saw in ancient China can be traced back to at least the early Shang Dynasty. Therefore, although the story of Lu Ban's creation has long been a household name, it is undeniable that this is just a beautiful legend, not a historical fact.

Luban is known as the ancestor of carpentry, and its prototype is the Lu people from the late Spring and Autumn Period to the early Warring States Period, because they were born in the Lu State, so they are also called "Luban". Lu Ban in the handed down literature, also known as "Lu Pan", and later generations pretended to be in the name of Tuo Lu, and compiled and sorted out a craftsman classic - "Lu Ban Jing".

When it comes to Lu's name, it is naturally a household name. In folklore, it is said that Lu Ban once went up the mountain to cut wood, and was inadvertently scratched by a sharp grass tooth**. Lu Ban, who was good at observation and thinking, was inspired by this and designed and invented the saw for logging, which greatly improved the efficiency of logging.

However, according to the archaeological excavations, the earliest copper saws in China can be traced back to at least the early Shang Dynasty. In the tomb of Panlongcheng in Huangpi, Hubei, a bronze giant was unearthed. In addition, in the late Shang Dynasty in the Yin Ruins site of Anyang, Henan, a saw made of bronze was also unearthed.

The copper saws unearthed from these two sites are more than a little earlier than the Warring States period in which Lu Ban lived. The Shang Dynasty already had a copper saw, how could it be that Lu Ban invented the saw?

So, before there were no copper saws, what did the ancients use to cut wood or process utensils? In fact, the ancients were very intelligent, and our ancestors already knew how to use the things around them as tools, or after transformation and processing. Before human beings mastered the smelting technology of bronze tools, people mainly used wood, stone, bone, mussels and other tools, among which stone tools are the most preserved and the most intact, so they have been known and understood by modern archaeological excavations.

In the Paleolithic Age, people used stones directly to chop and smash, and sometimes selected smashed stone chips for cutting and processing. In the Neolithic Age, people have been able to make stone knives, stone sickles and other tools with stones according to their own needs, and even install fine stone leaves on wood, bone and other materials to make matching tools, which greatly improves the cutting efficiency.

Before the advent of copper saws, ancient people could already use stone tools to cut wood, as well as tools made from materials such as animal bones or mussels. After human beings mastered the smelting technology of bronze, bronze tools and tools have been widely used, which has greatly improved the development level of productivity.

Yes, because Luban accidentally cut his finger with thatch, and then he looked closely at the thatch, and found a jagged shape, so he invented a saw made of stone.

Luban invented the "saw" because his hands were cut by thatch. From this tiny detail of life, the clever Luban invented a far-reaching labor tool.

Lu Ban once cut his hand by thatch, he carefully observed the leaves of the thatch, and found that there were many saws growing upside down on the leaves, so he invented the first saw according to this situation.

Yes, after he was cut by thatch, he found that the edges of the thatch were sharp and toothy, and he was inspired to invent the saw.