Jia Yi placed a piece of copper armor removed from the copper bull in front of him, this copper armor has no magic array patterns on it, and it doesn't matter if it is destroyed.

In front of Jia Yi, standing are Jia Yi's little friends, who are observing the experiment that Jia Yi is about to conduct.

Kaichi grabbed a handful of emery from the bucket on the side, with the help of these corundums, and then built a spell model, gathered a stream of water in his hand, brought all the emery into the stream, and then shot towards the copper armor in front of him.

The water flow of the ejector was very fast, and Kaichi was so close that almost no one could see the water clearly and shot onto the copper armor, the water flow was not thick, but very thin, like a thin blade, cutting on the copper armor in front of him.

I only heard a sound of "Ang Ang Ang" from the water flow, and within a few seconds, I heard a buzzing sound, and the entire copper armor was shot through by the water flow, cutting a crack, Jia Yi slowly moved his arm, and slowly divided the entire copper armor into two pieces.

Kaichi looked up proudly and said to the others, "How is it? Isn't it sharp? I call it a water jet." ”

Yanxi was surprised, although the water was also turbulent and extremely destructive, it never made people feel sharp, and only this time did he truly realize that the power of water was much more powerful than he once thought.

"But this spell of yours will take a bit long, no one will stand there and let you cut it for so long. Chester said.

"Ordinary people don't have such a thick copper armor, as long as they are hit, they will immediately become two sections. Kaichi retorted.

In fact, the biggest weakness of this spell is still the same as the space blade, it can't attack from a distance, and after the distance is long, it is not easy to maintain the posture of the waterjet that shoots out, because the water flow is very thin and easy to disperse. But the cutting power is very powerful, like a saw, and the spatial blade is like a sharp knife.

Last time, Ma Duo reminded Jia Yi that he still had a space blade spell on his bracelet, but he forgot about it, but since he had already started to build this spell now, Jia Yi did not give up.

Don't be timid enough to let people know that they've forgotten the spells on their equipment, even though March and the others already know about it.

Maybe it's for his last stubbornness?

There is still a lot of room for improvement in this spell, in order to ensure the cutting effect, the current water jet needs to add emery as an auxiliary casting material, and the auxiliary materials can be removed in the future, and it can be built directly through the spell, turning the current water spell into a mixed spell of water and soil, so that there is no need to bring casting materials.

However, hybrid spells are much more difficult to construct than normal spells.

In addition to the waterjet, Kaichi has been mainly making his own magic lathe recently, and now, the prototype of the first generation has been successful, just waiting for Eunice and them to come and equip it for trial.

......

......

Eunice and they came later than Jia Yi imagined, he thought that 7 or 8 days would be enough, because there was an airship navigation from the imperial capital to the academy, although the distance was long, but only three days were enough, but by the time Eunice and the others came, half a month had passed.

Although everyone always says to leave by airship, the airship takes off and lands in a place near North Water City, where there is a large space, and Eunice and the others are also from North Water City to the academy by boat.

Jia Yi stepped on a flying skateboard and slowly glided to the door of the Valoka chapter of the academy, outside the gate of the Chamber of Commerce, Eunice and the others were already waiting.

Jia Yi jumped off the skateboard, hooked his feet, lifted the skateboard to his hand, entered the chamber of commerce, and then handed the skateboard to the waiter on the side to keep, although he already had a storage bracelet, but now he still tried to avoid using it in public.

It's not bad to be cautious, but it's a bit of a choking.

Seeing Jiayi, Selena took the lead and said, "Jiayi, did you also skateboard just now? Why do you seem to fly by yourself?"

"Yes, it's still a trial model, it won't be launched for a while. Why are both of you here?"

Jia Yi was a little curious, although he said that he wanted a reliable person to come, preferably one of Selena and Eunice, but he didn't expect both of them to come.

"We all wanted to see what good stuff you had again, so we all came over to take a look. Eunice said.

Originally, she only sent her own daughter over, but because of the kitchen knife, it was delayed for a while, and after inviting Fogg, the problem was solved, at least on the surface.

However, it took a lot of time, and after the banquet to Fogg, even the original affairs of the Chamber of Commerce were much smoother for a while, and seeing that it was no longer busy, Eunice came over with Selena.

Selena was more interested in Jiayi's flying skateboard just now: "Jiayi, do you still have a skateboard just now, how about giving me one?"

Jia Yi shook his head: "This is a test model, it has not been perfected yet, and when it is perfected, I will send you another one." ”

Recently, Jiayi's flying skateboard is very eye-catching, originally, Jiayi doesn't like to use skateboards very much, and feels that this thing lacks the value of transportation, and it is not as convenient and labor-saving as a bicycle, but now with magic power, Jiayi feels that flying skateboards are indeed a lot more convenient. Moreover, it is convenient to find problems and improve them by using them more often.

Many people know that Jiayi has opened a shop, and then they went to ask, but unfortunately nothing came of it, causing some people who want to buy skateboards to be a little hesitant, but unfortunately at least in recent months, Jiayi has not launched the idea of a new skateboard.

There are even seniors with strong hands-on ability who began to design their own.,Many times it's a creative problem.,The requirements for technology are not strong.,Don't you see Apple's new machine come out.,Immediately what new features appeared on the rest of the machines?。

So far, however, no one has been able to make a flying skateboard.

Jiayi and the others originally thought that it was time to start reducing the price of the old skateboards and clearing the inventory, but unfortunately, their production was already limited, and there was no inventory to clear.

......

Taking Eunice and the others to his lab, Kaichi lifted a piece of felt cloth in the corner.

Under the felt cloth, a boxy machine is exposed, the surface of the machine has many gear lever structures, the upper part of the machine is a workbench, there is a drill bit on it, and there is a lead screw behind the drill bit.

But to Eunice, the machine looked a little weird.

"Is this it? What's the use of that?" Selena stepped forward and touched the machine, and with her hand she broke the gears, and spun the drill bit in front of her.

Jia Yi stretched out his hand and pulled Selena away: "This is a magic stone powered lathe, a machine that can automatically process mechanical parts, which can greatly improve efficiency." ”

"It's... How can you improve efficiency?"

Seeing the doubts on the faces of the two of them, Jia Yi stepped forward and took out a magic stone, put it into the energy bin of the lathe, and then started the lathe.

Instantly, the lathe made a buzzing sound, the gear of the lathe began to rotate, driving the drill bit on the workbench, under the workbench, there was a grid of conveyor belts, Jiayi took out a copper plate, put it into the grid of the conveyor belt, the copper plate was brought to the front of the drill bit, and it took a while to be cut into gears one by one.

The cut gears are dropped off the conveyor belt and clanged into a nearby basket. Jia put down the copper plates one by one, and then turned into gears one by one and fell, although the degree of automation is not high, but the speed is indeed fast.

Selena stepped forward and picked up a gear, the edge of the gear was very regular and neat, with sharp edges and corners when touched by hand, and a little residual warmth, because of the cutting, the edge seemed to be polished.

It was very different from the gears she had ever seen used to make pendulum clocks, and although they were about the same size, they were more regular, and they had a simple beauty that she couldn't describe herself.

She picked up the two gears and stacked them together, and the dimensions were exactly the same, and the naked eye could not see the difference at all.