I am a primitive

In this way, a total of three holes were dug out, and the distance between two adjacent holes was 45 cm.

Moreover, the three holes are not on the same line, but scattered in three different directions of the wooden column.

After drilling the three holes, Mao Er reached out and took the small rectangular board that had been cut on the side.

One end of the plank is relatively small, similar to the size of the hole chiseled out.

Align the small end of the board with the drilled hole, and the cat ear picked up the ax and smashed it against the board for a while, and the board was firmly fixed on the wooden shaft.

There is still 23 centimeters left on the outside of the wooden board that hit the wooden shaft.

Mao Er picked up a similar wooden post, and nailed it firmly to the wooden shaft with the same method.

After a while, the three holes were firmly nailed into square wooden pillars of the same length, width, and thickness.

Because the three are not on the same line, it looks a bit like the mace held in the hand of the leader of the Red Tiger Tribe.

After finishing this, Mao Er carefully checked it in his hand, and after seeing that there was nothing wrong with it, he put it down and went to work on other things.

The function of this thing is to move the installed water hammer head.

A short wooden post toggled one.

In other words, if this water pestle is done well, it can drive three water pestle heads at once!

With such a tool for pounding rice, the speed is naturally not slow...

"Bang, bang, bang..."

Holding the cat ears of a meteorite ax in his hand, he continued to swing there.

In front of him was a thick wooden wheel with a diameter of no less than thirty centimeters and a length of forty.

Around this thick wooden wheel, eight lines were evenly divided.

Now, each of these eight lines has been chiseled with three holes about one and a half centimeters wide, five centimeters long, and six centimeters deep.

What the cat's ears are holding is a trapezoidal wooden board with a long and narrow top.

On the narrow side of the plank, there are three protrusions corresponding to the holes cut in the wooden gollum.

After the cat's ears matched it, he took a wooden hammer and tapped the end of the board, slowly nailing it in and nailing it firmly.

The reason why I use a wooden hammer at this time instead of using a bronze hammer or a harder meteorite ax is because the board is relatively thin and I am worried that it will be smashed.

In the continuous 'bang bang' sound, the eight specially-made wooden boards were gradually smashed in, and finally they were all nailed.

After nailing the eight boards, the thing looks transformed, and the overall diameter reaches 1.5 meters!

This thing is the water wheel used to drive the water reel.

After finishing the water wheel, Mao Er, with the help of some people, fixed the water wheel on one end of the bronze shaft.

After fixing it, lift it to the shelf that has been made, and after finding a good position, fix it again.

After finishing all these, Mao Er grabbed a leaf of the water wheel with his hand and pushed it down hard (fa, two beeps), and the water wheel started to spin in the air with a grunt.

Even the solid wooden stick connected to the other end of the bronze shaft also began to rotate together.

The rotation effect is still good.

After turning it a few times in a row, the cat ears got some big oil and dripped it on the joint between the rotating shaft and the shelf below.

Then began to continue to rotate.

With these large oils for lubrication, the water wheel turned obviously much lighter.

Seeing this, Mao Er couldn't help but nodded in satisfaction.

Then, instead of turning the water wheel, people were brought in to install the hammer head of the water reel that had been made here.

The hammer head of the water reel for installation is more similar to the original water reed used in the tribe.

They are all shaped like unbalanced balance beams.

One end is a heavy hammer head, which is horizontal to the axis of the wood, and is relatively close to the hammer head, which is about one-third of the whole wooden pole.

At the other end is an empty wooden pole with nothing.

Different from the original water pestle that is being used in the tribe, the lighter and longer section of the wooden pole has not been taken out of the sink, on the contrary, it has been scraped extremely smooth.

Moreover, the upper part of its high raised tail end is not flattened, but some downward arcs are deliberately created.

Three such water reels have been made now, but now they are only experimenting with this new type of water reed, so only one is installed.

The installation position of this water bucket head corresponds to the middle one of the three small wooden boards installed on the wooden shaft.

There is a vertical relationship with the entire wooden shaft.

After finding the correct position and installing the head of the water wheel, under the gaze of Han Cheng who clenched his fist slightly, Mao Er, who also seemed very excited, stood up, came to the side of the water wheel, and held the water wheel with his hand. A leaf on the wheel was pushed down vigorously, and the water wheel and the rotating shaft fixed with it began to rotate.

Along with it, there are three relatively thick regular square wooden pillars nailed to the connected wood.

After the water wheel turned half a circle, the top of the square wooden column installed in the middle met the tail end of the high raised water hammer head.

This square wooden column began to move downward as the water wheel rotated, blocking the tail end of its water reed, and was pressed down by it.

At the same time, the heavy hammer head of the water pestle rose up, and went higher and higher.

"boom!"

The length of the square wooden pillar is limited. After pressing down the tail of the raised hammer for a certain distance, the wooden pillar slid to the rear of the tail of the water hammer, where the arc was made.

Then slipped from this arc and turned to another direction.

After losing the pressure brought by the square wooden column above the wooden shaft, the end of the hammer head installed on the water hammer regained the upper hand and fell from the mid-air with a 'bang' sound. Fall into the stone mortar placed below.

It just fell into it, and after turning around, the square wooden pillar turned around again.

Carrying power, it once again pressed against the high raised tail end of the water pestle, pushing it down...

Han Cheng frowned.

As far as the new type of water pestle experiment is concerned, it can be said that it is basically a success.

However, there are still many small details that need attention and modification.

For example, under the control of the crossbar installed on the rotating shaft, the hammer head of the water hammer is not high enough from the ground, so it falls down.