Chapter 101 The Bamboo Craftsman and the Hand Drill
This experience of digging a deep pit and planting wooden pillars allowed Senior Brother and others to experience firsthand the usefulness of the bone shovel.
When Shenzi said that he would continue to make bone shovels, everyone was very energetic.
Despite this, the efficiency of making bone shovels has never been improved. The biggest problem is not the selection and grinding of bones, but drilling holes in the bone shovels for threading ropes and fixing them.
The method currently used to drill holes is to select a hard rock, hit it, select suitable thin slices from it, and process it again to make it into a sharp-edged tool that can barely be called a stone drill.
Then he took the stone drill with his hand and began to drill holes in the solid bone fragments.
Because the bone fragments were too hard and the stone drill was not sharp enough, the drilling process was extremely slow and 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, second senior brother, and the leader of the original pig tribe, Shang, have to drill.
For a while, rest for a while.
Under such circumstances, it is very rare to be able to drill two holes in one day.
Regarding this situation, Han Cheng was also at a loss, 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 and made bamboo beds, coffee tables, chairs and other things for some families in the village, that the problem was finally solved.
(A bamboo craftsman is a craftsman who specializes in making various tools from bamboo, similar to carpenters, stonemasons, blacksmiths, masons, etc.)
At that time, Han Cheng, like other children in the village, was extremely curious about this matter and often stood by to watch how they turned bamboos into various exquisite and practical utensils.
Compared to others, Han Cheng was more curious about the tools they used to drill holes in bamboo.
It's obviously just a simple rope, a half-broken piece of bamboo, and a long iron rod with one end sharpened and a ring circled at the other end. After putting them together, it's like
It becomes a hand drill that can rotate quickly just by pressing down on the bamboo.
Han Cheng can still remember the scene when the bamboo craftsmen used this simple hand drill to drill holes in the bamboo.
After remembering this incident, Han Cheng was so happy that he immediately started making original hand-pressed drills.
The iron rod is not available at this time, but it can be replaced by other things.
Han Cheng found a sturdy wooden stick. The stick was not thick, only as thick as an adult's little finger.
This wooden stick is about forty centimeters long, and some small branches on it have been cleaned.
Then, use a simple stone knife made by the tribe to split one end of the stick down about two to three centimeters in 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 diamond.
The thicker and longer the upper part of the stone diamond, the longer the opening that needs to be split. On the contrary, the thin and short upper part of the stone diamond, the shallower the opening that needs to be split.
After the hole at one end of the stick is split, the next thing to do is to insert the upper part of the stone drill that was previously held in the hand into the broken hole. After adjusting the position, tie it up with rope and straw.
Then use a stone knife to carve a groove about two to three millimeters deep in the middle of the top of the other end of the stick.
It should be noted that this is different from before, where one end of the stick was split in the middle, but now it is carved into a groove to prevent it from splitting.
In this way, the stone drill is ready, the drill rod is made of wood, and the drill bit is the original stone drill.
After doing this, find a piece of wood about thirty centimeters long and four centimeters in diameter, and split it in the middle.
This is not difficult. You just need to place the stick upright on the ground, then place the blade of the stone knife against the middle of the upper end of the stick, and tap the back of the stone knife with a length of stick in your other hand.
As long as the stone knife does not tilt, the wooden stick will not tilt anywhere.
When striking stone knives, the reason why wooden sticks are used instead of harder stones is because the stone knives will be damaged when the stones hit each other, but this will not happen if many soft wooden sticks are used to hit them.
things.
Select half of the wood that has been split, use a stone knife to thin the two ends of the wood, and hold it with your hands for better grip. At the same time, carve a circle of small grooves on both ends of the wood for tying ropes later.
use.
After all these are done, find a piece of rope about one meter long, twisted with three cord grasses, and put the middle part of the rope into the groove of the drill pipe head that was made before.
Then turn the drill pipe clockwise (counterclockwise too) twice so that the rope will wrap around the upper part of the drill pipe.
Then put the wood you just made on the ground, step on it firmly with your feet, put the drill bit in the center of the wood, and then pull one end of the rope with one hand and pull it out.
Because the rope was wrapped around the drill pipe before, if it is pulled apart now, relying on inertia, the drill pipe will also rotate in circles, and the speed is very fast.
When the rope is pulled open in this way, after the drill pipe stops, relying on inertia, the rope will wrap around the drill pipe again in the opposite direction to before.
Then pull the rope again, and the drill pipe will continue to rotate, repeating the previous action.
In this way, the drill rod will rotate by itself without rubbing it with hands, and the miraculous thing of drilling a hole out of the wood below attracted everyone in the Qingque tribe to marvel.
They all stopped what they were doing and gathered around to watch.
The old people of the Qingque Tribe are better off, because they have seen many of the miracles of the Son of God. Those people from the Original Pig Tribe who have only joined the Qingque Tribe for less than a month opened their eyes wide in surprise, watching this incredible scene.
, amazed by the ingenuity of the Son of God.
It is true that you can drill things by pulling the rope by hand, but this also has a disadvantage, that is, the drill pipe is easily unstable due to the force during drilling, and the consequence is that the drilled hole is easy to deviate.
Another effect is that if you pull for a long time, your fingers will be pinched by the rope and hurt.
Only then will the wood made previously appear.
Han Cheng removed the rope from the drill pipe, then passed the drill pipe through the wooden board that had drilled the hole. Then he placed the wooden board about one-third of the way below the drill pipe, and then tied the two sides with a rope.
end.
Of course, the middle position of the rope is still stuck in the groove on the upper part of the drill pipe.
After it is fixed, a real hand drill is ready.
When using it, just like when pulling by hand, first turn the drill pipe twice, then put the drill bit against the place to be drilled, hold both ends of the wood with both hands and press down, and the rope wrapped around the drill pipe will
It will loosen and then drive the drill pipe to rotate in a circle.
In this way, a real hand drill appeared. Although the drill bit and drill rod are simple enough, it is undeniable that this is truly a traditional hand drill.
(Chapter 3 has been delivered. I also ask my comrades to throw a few recommendation votes at me after reading it. You are welcome, but you must be ruthless, haha)
