The experience of digging deep pits and planting wooden pillars allowed the senior brother and others to experience the good use of the bone shovel.

When Miko said that he would continue to start making bone shovels, they were all very energetic.

Despite this, the efficiency of bone shovel production has not been improved, and the biggest problem is not the selection and grinding of bones, but the hole drilled in the bone shovel for rope fixation.

The method used to drill a hole today is to select a hard rock, strike it, select a suitable sheet from it, and reprocess it to make a sharp, barely known as a stone drill.

Then he took the stone drill in his hand and began to drill holes in the sturdy bone fragments.

Because the bone fragments were too hard, and the stone drill was not sharp and sharp enough, the drilling process was extraordinarily slow and extremely laborious.

After drilling for a long time, the fingers of the stone drill will become sore, and the wrist will become extremely tired, so that even the strong senior brother, the second senior brother, and the leader of the original pig tribe have to drill for a while and rest for a while.

Under such circumstances, it is very rare to be able to drill two holes in a day.

Han Cheng was also at a loss for this situation, and he also couldn't think of any good way to solve the current predicament.

It wasn't until he suddenly remembered that when he was very young, a group of 'bamboo craftsmen' came to the village to make bamboo beds, coffee tables, and chairs for some people in the village, that this problem was solved.

(A bamboo craftsman is a craftsman who specializes in making various tools from bamboo, such as carpenters, stonemasons, blacksmiths, and masons.) ）

At that time, Han Cheng, like the other children in the village, was extremely curious about this matter, and often stood by to watch how they turned bamboo into various exquisite and practical utensils.

Compared with the others, Han Cheng was more curious about the tools they used to drill holes in bamboo.

Obviously it was just a simple rope, a half-broken bamboo, and a long iron rod with one end sharpened and the other end looped, and when they were combined, it became a hand-pressed drill that could be quickly rotated by simply pressing the bamboo down.

Han Cheng can still remember the scene when the bamboo craftsmen used this simple hand-pressed drill to punch holes in the bamboo.

After remembering this incident, Han Cheng, who was happy in his heart, immediately began to make the original hand-pressed drill.

The iron rod was not available at this time, but it could be replaced with something else.

Han Cheng found a sturdy wooden stick, the stick was not thick, only the thickness of an adult's little thumb.

The stick was about forty centimeters long, and some of the small branches on it had been cleared.

Then they used a simple stone knife made in the tribe to cut down about two or three centimeters from one end of the stick along the diameter.

Of course, this distance is not fixed, and needs to be determined according to the thickness and length of the upper part of the stone drill.

The thicker and longer the upper part of the drill, the longer the opening that needs to be split, and conversely, the upper part of the drill is thin and short, and the shallower the opening that needs to be split.

After the opening at one end of the wooden stick is split, the next thing you need to do is to stuff the upper part of the stone drill that you had pinched in your hand into the broken hole, adjust the position, and tie it with rope grass to tie it strongly.

Then, a stone knife is used to carve a groove about two or three millimeters deep in the middle of the top of the other end of the stick.

It should be noted that this is not the same as Fang Cai, which splits one end of the stick from the middle, and now it is carved out of the groove to prevent it from splitting.

In this way, the stone drill is done, the drill pipe is wood, and the drill bit is the original stone drill,

After doing this, find a wooden stick about 30 centimeters long and about 4 centimeters in diameter, and split it in the middle.

It's not very difficult, just place the stick on the ground vertically, then put the blade of the stone knife against the middle of the top end of the stick, and hit the back of the stone knife with a piece of stick in the other hand.

As long as the stone knife is not tilted, the generally split wooden stick will not be tilted anywhere.

The reason why wooden sticks are used instead of harder stones when striking a stone knife is because the stones will be damaged when they are knocked together, but this will not happen if you use a soft wooden stick to smash it.

Choose a half-split piece of wood, use a stone knife to thin the ends of the wood so that you can hold it better by hand, and at the same time carve a small groove on each end of the wood for later tying rope.

After all this is done, a rope about one meter long and twisted from three ropes is found, and the middle part of the rope is stuck in the groove of the head of the drill pipe that has been made before.

Then turn the drill pipe twice in a clockwise (counterclockwise direction) so that the rope is wrapped around the upper part of the drill pipe.

Then put the wood on the ground, step on it firmly with your foot, put the drill bit against the center of the wood, and then pull one end of the rope with one hand and pull it out together.

Because the rope used to be wrapped around the drill pipe, if it is pulled apart now, the drill pipe will also rotate in a circle by inertia, and the speed is still very fast.

After pulling the rope and stopping the drill pipe, the rope will be wound around the drill pipe again in the opposite direction to the previous one, relying on inertia.

Then pull the rope again and the drill pipe will continue to rotate, repeating the previous action.

In this way, without hand rubbing, the drill pipe will turn on its own and drill a hole in the wood underneath, which attracts the amazement of everyone in the Qingque tribe.

They all stopped what they were doing and gathered around to see the rarity.

The old people of the Qingque tribe were better, because they had already seen a lot of the miracle of the Divine Son, and those who had only joined the Native Pig Tribe for less than a month were staring at each other in surprise, looking at this incredible scene, and were amazed by the ingenuity of the Divine Son.

Relying on the rope by hand, it is indeed possible to drill things, but this also has a disadvantage, that is, because of the force when drilling, the drill pipe is easy to be unstable, and the consequence is that the hole drilled is easy to deviate.

Another effect is that after pulling for a long time, the fingers will be strangled by the rope and painful.

All of them will have the wood that was previously made.

Han Cheng removed the rope from the drill pipe and passed the drill pipe through the wooden board that had been drilled, and then placed the wooden board about a third of the way down the drill pipe, and then tied the ends with the rope.

Of course, the middle of the rope is still stuck in the groove in the upper part of the drill pipe.

After fixing, a real hand pressure drill is ready.

When using, as when pulling by hand before, first turn the drill pipe twice, then put the drill bit against the place where the hole needs to be drilled, hold the two ends of the wood with both hands and press down, the rope wrapped around the drill pipe will be released, and then drive the drill pipe to rotate.

In this way, a real hand pressure drill has also appeared, although the drill bit and drill pipe are simple enough, but it is undeniable that this is really the traditional hand pressure drill.

(The third chapter is delivered, and please comrades throw a few recommendation votes at me by the way after reading it, don't be polite, you must be ruthless, haha)