If there's anything else in this world that Lear desperately wants, it's a hydro machine tool.

However, this was impossible, and even if he collected as many sacrifices as he could sacrifice to Asha, the dragon god would not have been able to create something for him that did not exist in this world.

He also asked if he could directly pull one of these things from another universe, and it didn't even need to be too precise, just a rough blank, and if the principle was clarified, his group of dwarves would be able to make it out one day.

Yasha refused his request.

The reason is that the amount of divine power required by any material form to pass through the crystal wall of the universe is astronomical, and even a chicken feather in another universe is not something that Lear can afford.

In this race against Ogas in this race against time, it is impossible for Yasha to spend his divine power to do such a thing for him, and at the end, the dragon god also seriously warned him not to have those thoughts that he should not have, and Ogas recovered much faster than he imagined.

The journey to this world must be carried out at a faster pace, especially the descendants of Ogas hiding in Ofer, who are contributing to the rediscovery of Orogas, and those demons must be destroyed as soon as possible.

Lear disagreed.

Even without his native world background, the Hells were never very powerful, compared to Bracada, Sandru, and even Erathia and Tanan, who were fighting a decisive battle on the vast plains at the moment, were much more powerful than the so-called Demon Sons.

This idea is deeply ingrained in Lear's mind, so despite what Yasha says, he still makes solving Sandru his top priority right now.

But first he had to deal with the pitch-black iron rod in front of him.

For this reason, he had been in the dwarven workshop for more than half a month, and he had never stepped out of this hot furnace except to attend the funeral of the two thousand fallen warriors, and as chief firearms advisor and chief craftsman, Jeremy and Blue followed him almost sleeplessly.

After the Battle of Palofodi, subject to the number of troops, logistical supplies and soldier training, Spartacus could not gather enough corps-level combat power for large-scale battles in the short term, which is not the same as the defense war can be all soldiers, when the soldiers go to the territory of other countries, it is absolutely not enough to have blood.

Lear felt that Spartacus was in dire need of a new weapon, a weapon of killing that would no longer be constrained by soldiers across the ages, and that as long as there were thousands or even hundreds of people, it could form an absolute fire suppression against an enemy several times or even ten times its size.

Yes, he can't wait to bring modern warfare into the world, to go beyond the ancient and complicated process of military development and directly use spears and cannons to tell the enemy what fear is.

It's not the kind of flintlock pistol that has to be filled with gunpowder marbles and accidentally injure the chamber if you are not careful—real guns, automatic or semi-automatic weapons.

However, those two small rifling lines mocked his whimsy like two moats in front of him.

Of all the elements that make up a rifle, the barrel is the most accurate and important part, although in later generations anyone with the usual tools of lathes, milling machines, and small workshops and the knowledge to use them can make them with no difficulty, even if they will experience a few failures.

It's a shame that Lear only has one pair of hands, and he's experienced more than a few failures in this time.

Unlike artillery, the barrel completely excludes the method of making the cannon in terms of material and size.

Neither copper nor wrought iron can be used to make the barrel, only steel and high-strength alloy steel, in which the chromium content cannot be less than ten percent.

After all, any firearm is essentially a pressure vessel, and in order to prevent the tail of the barrel from exploding due to excessive pressure from the primer explosion on impact, the steel used to create the barrel must be able to safely withstand the instantaneous high pressure of 50,000 pounds per square inch or more.

The dwarven furnaces were already able to make ordinary steel, and the addition of sulfur would probably make them as dense as Lear requires, but the little steel that only appeared after forging wrought iron each time was far enough for his needs, but it wasn't the one he was having a headache with.

Mass production is something like this, at least until the first barrel is forged.

Nearly a hundred broken pitch-black steel rods were densely discarded at Lear's feet, which was the result of all his experiments for more than half a month, some of them cracked at the front end, some burst in the middle, and some were at the rear, but without exception, they were all relics of failure.

In the absence of a milling machine and lathe, it is difficult to poke a uniform hole from a finger-thick steel rod by hand, and any trembling of the fingers or even the hair of the arm may lead to a failure.

"No matter what you do in life, you have to start with a hole first. Lear understood what that meant.

Lear is not an engineering dog who can't build a precision lathe, but his experience in the reconnaissance unit in his previous life also taught him that it is impossible to use such a thing as a twist drill for drilling gun holes.

Thankfully, although there is no tungsten carbide, he has no shortage of high-strength gemstones for making drill bits, and Blue's excellent forging process has helped him meet this requirement.

Now all you have to do is fix the drill bit at the end of the barrel and keep the barrel itself rotating at high speed, so that the drill bit always cuts on one side and stays on the central axis of the cylinder's rotation, and that's the hardest part.

Without a machine, he must use magic to maintain the high speed and uniform rotation of the barrel, and he must not have any distractions during the whole process, let alone be disturbed in any way, otherwise the output of magic power will cause the steel rod to explode once it is unbalanced, as evidenced by the pile of scrap steel under his feet.

And in front of him was already the last of the steel produced in this batch.

Although Lear has never clearly stated what he wants to do, his serious attitude over this period of time has undoubtedly deeply infected Jeremy and Blue, who have followed him.

When he awoke from his meditation again, took several deep breaths, and then walked over to the already secured steel rod and drill and stretched out his hands, both of them holding their breath at the same time.

The steel rod began to spin, slowly approaching the diamond-made bit at a steady, slowly increasing speed, and Lear showed an unusual composure in the process.

Breathing was stealthy with an almost imperceptible intensity, even the strands of his hair, his hands, his brows, were completely fixed, and there was not a single glint in his calm eyes.

Sparks began to be generated, followed by the sound of steel being cut like a cicada on a summer night, but countless times more piercing than the cicada's chirping.

As the sparks splattered on his bare skin and turned into black dots, Lear didn't even blink an eye.

The speed of the steel rod was getting faster and faster and soon exceeded two thousand per minute, and the hard drill bit began to cut through the debris at the top of the steel rod little by little, slowly spiraling deeper and deeper.

1 centimeter, 1.5 centimeters, 2 centimeters......

As time passed, the drill bit went deeper and deeper, and when the speed of the steel rod had reached 4,000 per minute, it finally stopped growing slowly, and the acceleration became stable.

A drop of sweat fell on the high-speed spinning steel rod, but it was thrown out almost instantaneously and splattered into more faint droplets of water in the air.

Ten centimeters.

Jeremy and Blue were separated from Lear's left and right, their eyes were wide to the limit but they didn't dare to breathe, and the previous hundreds of lessons made them understand that as long as they didn't reach the moment of final success, the chances of failure would not be reduced a little.

Twenty centimeters.

Lear couldn't control the sweat dripping from his forehead, the pressure of this high-intensity mental concentration was unimaginable, and Jeremy was anxious and helpless at the same time.

The last time he encountered this situation, it was because he took it upon himself to cast a wind spell for Lear, originally he just wanted to remove those sweats for Lear, but he didn't want to cause the resonance of the surrounding elemental magic, resulting in a failure at forty centimeters, although Lear didn't say anything, but Jeremy has been blaming himself for it, because it was the closest to success.

Thirty centimeters.

Lear was already sweating on his forehead, not only that, but his face was already strangely pale, and for nearly an hour, he concentrated all his mental power on such a small thing, although the magic power consumed was limited, but the mental power consumed was tantamount to casting a forbidden spell.

But even so, his eyes were still firm, his hands did not tremble at all, and the power of the wind elemental visible to the naked eye continued to pour out of his palm, and then wrapped around the steel rod to rotate at high speed, and dots of black iron filings kept bursting out from the front end that had been drilled through.

Forty centimeters.

He had reached the highest place of record, but at this time, Lear suddenly blinked his eyes, and it was at this moment that the magic elements that had been gushing out of his hands suddenly changed slightly.

The left hand is a little stronger, but the right hand is a little weaker.

The balance is broken.

"No !!"

Lear let out a desperate roar in his heart, this had happened a hundred times, of course he knew what would follow, the unbalanced magic element would change the speed of the steel rod and cause the drill to be unstable, followed by the drill bit coming out a few inches off the center and cutting the steel rod in two.

It wasn't what he wanted.

In a fit of rage, he suddenly increased the power of his mana output, not only the wind element, but also the four-series mana poured into the steel rod like a flood of escape, instantly increasing the speed to an unimaginable level.

More than 10,000!

This is the last struggle, in fact, Lear himself knows that this happens also means failure, as long as it takes a few tenths of a second for the diamond drill bit to drill out of the side mercilessly, and then the broken steel pipe will lie flat on the ground again and laugh at his incompetence.

Let it be, Lear has completely lost faith.

However, something he didn't imagine happened.

............