Chapter 120: Stone chisel

　　 After having the first successful example, the following ladders have become easier to manufacture.
　　 Considering the speed at which people from the tribe can go up the wall when the enemy comes, Han Cheng feels that it is necessary to create more ladders.
　　 So within two days, the tribe placed five ladders separately behind the new high west wall.
　　The more traditional ladders of later generations, such as wooden ladders and bamboo ladders, are not manufactured in this way. The main difference is the installation of the horizontal bars.
The wooden ladders and bamboo ladders of later generations were made by piercing the pierced eyes on the two pillars, and then smashing the crossbar into the piercing eyes. Such ladders, whether they are beautiful or firm, are far from what Han Cheng did. The simple built ladder can be compared.
　　Considering that the wooden ladder is easily damaged by the wind and sun all year round, especially the rope that binds the bars is easy to deteriorate, after making a simple wooden ladder, Han Cheng wanted to make a traditional wooden ladder.
　　 If you want to make a traditional wooden ladder, there is a difficulty that must be overcome. This difficulty is to make a hole in the wood.
　　 It is easier to pierce the eyes in later generations, because there are sharp chisels specially used for piercing the eyes.
　　 Now, without the right tools, Han Cheng can only frown and meditate in the face of this technical problem.
　　 Han Cheng thought of the hand-pressed drill he had successfully manufactured before, and after several attempts, he had to shake his head and give up this method.
　　The hand pressure drill can be used to drill some small holes. Once the required eye is too big, the hand drill is powerless.
　　 This is not something that can be done with a bigger drill.
　　 Stone is a good thing, especially for the primitive people and Han Cheng who can't produce copper, iron and other metals.
　　 After the manual drilling failed, Han Cheng hit his attention on the stone.
　　Since stones can be made into stone knives and stone axes, there is no reason to make stone chiseled.
　　 Just do it, Han Cheng asked the people in the tribe to use the hard stone that made stone knives to make stone chisels according to his requirements.
　　 The shape of the stone chisel is also simple. It is a round or flat long stone pillar. One end is knocked off a little bit. After knocking out the rough edge, it is placed on a big stone and polished while sprinkling water.
　　It is also reasonable to sprinkle water when grinding. The most important thing is of course not to prevent dust and cooling, but the water can wash away the ground stone foam, so that the stone used as the whetstone maintains friction.
　　The production of stone tools is a time-consuming task. This stone chisel is still made by wood in the tribe, which is better at making stone tools. It took three days to complete the work.
　　 This wood is not the other wood, this wood is an adult man in the Qingque tribe.
　　 He was originally a person living in the Qingque tribe. Before the pig tribe members joined, his personal strength could rank up to five to seven in the Qingque tribe.
　　The reason why he calls him
wood
is actually very simple, because he doesn’t like to talk very much, and it always looks like a wood.
　　 But wood is wood, but when it comes to building stone tools, the technology of wood is definitely second to none in the Qingque tribe, and the same is true for the pig tribe that later joined.
　　 This may have something to do with his relatively wooden character, and the manufacture of stone tools requires patience and constant polishing.
　　 So, in fact, everyone has their own shining points, and the reason why they feel that they are not as good as others is because they only see the dazzling features of others, and have not found something suitable for oneself to show off.
　　 Things are not absolute, they can be changed under certain circumstances.
　　 Just like three sticks can’t hit a piece of wood from a fart, letting him make a deal is naturally a fool, but when he meets a stone tool, he does things that others can’t match.
　　 "Beep toot!"
While other people in the Qingque tribe were busy raising the fence or harvesting green grass, Han Cheng, the son, was not idle either. He held a stone chisel made of wood in one hand and a piece of wood in the other. Hit the top of the stone chisel.
　　 With his percussion, sawdust was shoveled up by a stone chisel on the big log on the ground.
　　 The reason why the stone chisel is hit with wood instead of harder stones is because wood can protect the chisel from harm.
　　 "Deep toot"
　　 Han Cheng placed the stone chisel obliquely on the wooden post, and then struck it. It can be seen that a roughly square pit with a depth of two centimeters has appeared on the wooden post.
　　 "Oh~"
　　 Han Cheng knocked for a while, put down the stone chisel and the wooden stick in his hand, moved his tired hand, and sighed.
　　 The stone chisel is still not good. It is not sharp enough. It was OK at the beginning, but as the depth of the drill hole increases, the efficiency begins to plummet.
　　 Han Cheng was full of melancholy because of this. He just wanted to make some holes in the wood. How could it be so difficult!
Wood saw Han Cheng throwing the stone chisel on the ground, his brows frowned, his face was full of sadness. He thought it was the goddess who disliked the things he polished, and did not speak. He picked up the stone chisel that Han Cheng had placed on the ground and went to the stone Upper grinding.
　　 Han Cheng looked at the wood that was carefully polished with stone, and he sighed while feeling warm. Even if the stone is polished to the top, it cannot be as good as steel.
　　 Of course, except for a diamond that went bankrupt.
Han Cheng looked at the wood and meditated ~EbookFREE.me~ He continued to chisel down with a stone chisel, and finally he could cut out the pierced eyes, but this was not what he wanted, because it took too long, so he might as well do it directly. Simple ladder tied with rope.
　　 Twilight descended, and the blue bird tribe after a tiring day became quiet, the night was quiet, there was snoring in the cave, and the faint fire light swayed.
　　 The shadow of the old primitive man who looked after the flames was cast on the mountain wall, looking very tall.
　　 Han Cheng turned over, lay on his side and looked towards the cave, looking at this vague and quiet cave, very different from the daytime.
　　 The motion of his turning over awakened the Fu general who was lying on his toes. Fu Jiang raised his head and looked around vigilantly. Seeing that there was nothing unusual, he lowered his head and buried his nose under his tail to continue his dream.
　　 There is it!
　　 A thought suddenly appeared in his mind, making him happy, all the irritability was suddenly broken, and the whole person was awake.
　　Fire!
　　 He looked at the faint beating flame, his eyes burning.
　　 The two things, water and fire, have the most effect, how can I forget it? !
　　 He was thinking about opening his eyes with fire, and didn't fall asleep until late.
　　 Han Cheng got up early the next morning, did a little exercise after washing, and then started to open his eyes.
　　 Han Cheng wanted to see the eyes out, not all for the ladder, just like the hand drill he got out before, but also for the future.
　　 When iron nails were not flooded in ancient times, carpenters, bamboo craftsmen, etc. made various utensils, and the method used to connect them was 卯.
　　 This seemingly inconspicuous hole actually has extraordinary significance in the manufacture of appliances.
　　 (something happened to j today, the update is late, sorry, sorry)