Qin Xiaowei didn't say anything, just pursed his lips, until Tang Jichen's face was full of grievances that couldn't be concealed: "What is cost-effective or not, do you know how much Xiaowei has suffered for the general-purpose machine gun and how much he has suffered?"

Not to mention anything else, just for the roller in the bolt, his hand almost rubbed off a layer of skin, and once again his fingers were almost eliminated by the grinder, you don't believe it, see for yourself! ”

Tang Jichen couldn't help but grab Qin Xiaowei's hand behind him, and showed it to Bai Yi and Zhu Yingqi, looking at the few gauze wrapped around his fingers, as well as the smooth, almost indistinguishable handprint hands, Bai Yi only frowned slightly.

On the contrary, Zhu Yingqi was stunned: "This hand is actually ......"

Zhu Yingqi is very similar to finding an appropriate adjective, but he smashed his mouth a few times, and he was stunned that he didn't find a suitable word, not that Lao Zhu's cultural level was not enough, but Qin Xiaowei's hands simply didn't look like human hands.

Neither white nor gray, a shallow callus-like substance is attached to the smooth surface, and the trembling of red flesh can be seen clearly on a few obvious depressions, which makes people inevitably have to take a few breaths of cold air at a glance.

"It's Master Lei's craft!"

Bai Yi didn't say much, just asked lightly.

This time, without waiting for Tang Jichen to help answer, Qin Xiaowei hummed seriously and nodded.

As Tang Jichen said, in order to complete the general-purpose machine gun, Qin Xiaowei really suffered a lot, even if the complex and precise theoretical calculations are counted, the most important thing is the difficulty in processing.

Among them, the accuracy of the rollers in the bolt is the highest, and the error accuracy cannot exceed 0.05mm, which is equivalent to the diameter of an adult hair, in other words, the surface of the two rollers is not allowed to have even a hair-level defect.

This requirement is that at the beginning of the 21st century, a few decades later, if there is no factory with some background, it will not be able to make such accuracy, let alone the current era of poverty and whiteness.

Therefore, Qin Xiaowei hit his head and broke the blood flow at the beginning, and even tested the sample again, because the roller was not processed, which led to a deviation in unlocking, and the whole gun exploded, almost blinding Qin Xiaowei, who was doing the test himself.

In this regard, Qin Xiaowei has not thought of a solution, the use of German precision machine tools to improve, so as to improve the processing accuracy, he has tried no less than dozens of times, but it is not easy to improve the accuracy of a few tenths of a millimeter, there is no computer to assist, there is no precision accessories to support, only rely on a few old machine tools that have been in the wind and rain in the field for several years, it is impossible to achieve it.

Qin Xiaowei, who had experienced several failures, gradually understood this truth, although it was a little cruel to him, he still had to accept this cruel reality, but just when he was disappointed to the point of almost despair, Master Lei of Baiyun Factory made Qin Xiaowei see the hope of realizing his dream.

It was a rainy autumn afternoon, and the Korean front, which was in the midst of fierce fighting, urgently needed a batch of 155mm and 150mm artillery shells to facilitate the normal use of American-made 155mm guns and German-made 150mm guns.

At that time, the Soviet Union did not have a production line for these two caliber ammunition, and there was no hope for imports, and it could make up for some by relying on how much it was captured, but since the US army suffered a big loss in the first and second battles, its artillery arrangements became more flexible, and there were few mistakes, and they immediately loaded their vehicles and left, leaving the so-called fire support to the air force in the sky.

As a result, the idea of making up for the shortfall with seizures became empty talk, so they had to produce their own.

As a military factory incorporated into the logistics system of the Volunteer Army, the Baiyun Plant accepted this task without giving up, and the caliber of the shells, the charge of the barrel, the specifications of the explosives, the composition of the shrapnel, etc., the Baiyun Factory did not frown.

But when it came to the most important production link, there was a major mistake.

Due to the lack of processing accuracy, the quality of the cartridge belt was not up to standard, and the chamber exploded during the test firing of the shell, which directly blew up a valuable American-made 155mm howitzer.

Such a heavy loss was naturally strongly reprimanded by the Volunteer Army Headquarters and the General Staff Headquarters, so much so that Song Jixue, who had just taken over as the director of the factory, was punished by party probation.

At that time, the chief of armaments who was still in Pyongyang, North Korea, had already packed their bags and were preparing to return to China to personally grasp the matter, and even Bai Yi, who was in charge of the trapping of US helicopters on the Tiewon front, received an urgent telegram to return to China at any time.

The involvement was so wide, the pressure on the Baiyun factory at that time can be imagined, but the problem is that the Baiyun factory does have deficiencies in high-precision processing, and the American and German artillery is surprisingly precise, so that the slightest deviation of the cartridge belt on the shell will lead to the tightness of the loaded shell and the gun body is not enough, the light is not enough to seal and lead to weak shooting, and the heavy is directly blown up, and the cannon is destroyed and killed.

However, just when the Baiyun Factory was at a loss, the old fitter Master Lei stepped forward, and in the face of the continuous but chilly autumn rain, he first touched the inner chamber of the American and German guns with his famous "Lei right hand", and then repeatedly rubbed the shell belts of the two guns.

Finally, he squinted his eyes and opened them slightly, pointed to a place, and ordered his apprentice Ren Xudong: "Here, file four ways!" ”

Four ways, that is, 0.04mm, the diameter of an adult's hair is just that, but Master Lei didn't use any measuring instruments, just with the pair of almost dry right hands to find out this value.

What's more, the whole process only took a minute or two, and if it weren't for Master Lei's name, everyone present would have thought that the old man with the cannonball in his hand was having fun.

Not to mention Qin Xiaowei, even Master Lei's apprentice Ren Xudong couldn't believe that his master could accurately the number to this level, 0.04mm, what kind of hand does that have to be? A sci-fi hand with a precision instrument?

So the two cadres of the Logistics Department of the Volunteer Army who were present at the time immediately questioned it, but Master Lei smiled slightly, and he didn't need Ren Xudong to step forward, he directly picked up the file, and filed a few times on the left and right sides of the belt, and then threw the file on the work platform, and said proudly: "Take it and fight, if there is any problem, you can take off my head!" ”

In the end, it was the factory director Song Jixue who made a package ticket under pressure, so he pushed the shell that Master Lei had filed himself into the chamber with an attitude of being a dead horse as a live horse doctor.

The whole process was like flowing water, only to see that the people present were dumbfounded, and a large group of people were busy working for two months to solve the problem, Master Lei just touched it with his hands, and filed it, and he still endured it.

This makes many people have an indescribable sense of dream, I really believe that all this is true, but when the cannonball lands and the roar wrinkles, including Qin Xiaowei, all of them were blown back to reality, but because of this, they have to praise it from the bottom of their hearts, this craft, there is really no one!