I was going to go to the county seat a few days ago, but it was delayed because of penicillin.

Now Zhang Ran still can't go.

On the one hand, it is because Wang Wenping's seriously injured people have improved after using penicillin, and Zhang Ran hopes to visit them and say a few thoughtful words after they are all sober!

A few thoughtful words may not be of much help to the wounded, but for the wounded themselves, it is necessary to know that the detachment remembers what they have done and that the detachment still cares about them, and maybe it can give them additional mental strength.

In addition to this aspect, the other aspect is that in the past few days, the weather has been good, and the finished grinding wheels have been dried in the shade, and they should be able to test whether they can be used for cutting.

The grinding wheel machine is no longer what it was at the beginning!

The original grinding wheel machine, Zhang Ran was completely directly connected to the engine disassembled from the scrapped motorcycle.

Although it can be used to do this, it is obviously a very stupid behavior - it is equivalent to making the machinery and power machine hard without excess, and it is very easy to have all kinds of problems.

Of course, Zhang Ran understands this.

It's just that at the beginning, the detachment couldn't find anyone who knew how to mechanically power, so he could only think of this stupid way to make do.

It's different now, because the detachment has Xu Kunjun, a mechanical expert!

After receiving the task assigned by Zhang Ran, Xu Kunjun, who was busy helping Gai Heiliang design a tank modified gun trailer, pulled a few handfuls of hair, asked the blacksmith workshop to help, and he took time to see the stitches and needles, and finally helped Zhang Ran make a simple cutting machine.

It is said that it is a cutting machine, but in fact, it is a coil around the iron shell made by the blacksmith workshop, and then a steering transmission device is added, and a through-cut power switch, which is extremely limited in technical content!

Looking at the clumsy and rough cutting machine in front of him, he opened his mouth straight, knowing that Xu Kunjun gave him this thing, and his work attitude was very perfunctory!

But I can only make do with it first!

The first thing to do now is not to consider whether this cutting machine is good or not, the first thing to determine is the grinding wheel!

The grinding wheel can be used, so it's easy to say anything!

He believes that as long as Niu Dacheng Dongshan Cui Sanyuan and other guys in the back mountains see the effect of this cutting machine cutting iron like mud, they don't have to give their own orders, Xu Kunjun has to rivet all his strength, even if Xu Kunjun will pull out all the forehead hair on the head that has lost a lot of hair recently and has some signs of baldness, he has to design a good cutting machine in the shortest possible time!

The corundum of the polymeric grinding wheel is the same, but the glue used is different, and the key to determining the success or failure of the grinding wheel can successfully cut steel is precisely the glue!

Several grinding wheels made of chemical glue purchased by Gao Jin are marked with numbers, and the corresponding numbers are, of course, one of the glues used to make grinding wheels.

Zhang Ran picked up a grinding wheel, installed it on the rough cutting machine, fixed the screws with a wrench, and then started the test in fear.

Under the high-speed rotation of the cutting machine, the first grinding wheel disintegrated naturally after holding on for a few minutes, and the broken grinding wheel fragments roared out like flying knives, directly powdering a table, and cutting a deep mark on the wall like a sharp axe......

Fortunately, Zhang Ran was prepared, and ran out of the house and closed the door as soon as he started the cutting machine, otherwise if he slashed this fragment on his body, the consequences would not be much better than the effect of the devil's little bayonet on his body......

After wiping a cold sweat, Zhang Ran began to test the second grinding wheel.

Five minutes passed......

Ten minutes have passed!

Half an hour later, except for the roar of the cutting machine, there was no abnormal sound in the room, Zhang Ran was overjoyed, and then he entered the house, got into the armor-like wooden shell carefully built by Lao Zheng of the carpenter group, and placed steel under the cutting machine, and then turned on the cutting machine again.

The grinding wheel, which was originally functioning normally, was once again split apart and flew out like a knife......

If it weren't for Lao Zheng's protective armor made thick like a coffin, Zhang Ran would have been doomed!

What surprised Zhang Ran was the last grinding wheel to be tested!

Not only does it not disintegrate when idling, but it also maintains sufficient strength when cutting.

Five or six minutes later, the thumb-thick iron rod was cut in two!

"Awesome, Captain!"

"With this thing, the work intensity of our blacksmith workshop will be greatly reduced......"

Holding the iron rod that was cut in two, Niu Da jumped up excitedly and was overjoyed!

No wonder he was so excited, it was because in the past, whenever he wanted to cut off the steel, he had to first burn the steel red, and then hit the iron chisel with a sledgehammer, which often had to go through many refurnaces before it could be cut into the required size and length, not to mention the time and effort, and a large number of manpower had to be used!

With this cutter, a person can turn on the power and wait slowly, which is definitely a huge blessing for their blacksmith workshop!

"You get out of here!"

Zhang Ran kicked away the cow who was pouting his butt and touching the cutting machine and grinding wheel, and then observed the grinding wheel cutting machine......

And Niu Da rubbed his buttocks, staring at Zhang Ran with an aggrieved face, and said in his heart that this thing was not invented, and I endured it if you were in a bad mood and kicked me, but now that it has been invented, you also kicked me for this great thing?

It's a bit too much, Captain!

But he didn't know that Zhang Ran didn't just want to help them reduce the intensity of work in the blacksmith workshop!

To build this grinding wheel cutting machine, Zhang Ran didn't think about their blacksmith workshop at first, he wanted to use this thing to steal the little devil's rails!

Now, around the detachment, because of the fact that they often win victories in battles with the little devils, there is no shortage of guns at all, and even the guns and equipment of the main force have gradually reached the level of wrestling with the little devils without using aircraft artillery!

However, the equipment situation around the detachment and the division headquarters is only a special case, and by no means the norm on the battlefield of the entire Sino-Japanese War!

Even on the frontal battlefield, many of the soldiers of the chairman's team, which gathered the support of the whole country, had to entangle with the little devils with guns that had been smoothed out, not to mention the soldiers of the Eighth Route Army in the battlefield behind enemy lines that were blocked by the little devils and all kinds of materials were almost all maintained by capture!

Just like in history, the vast majority of the soldiers of the Eighth Route Army in the base areas behind enemy lines are still in the difficult situation of not being able to distribute a single gun even if they break it, and the guerrillas have even fewer guns, and they often have to use shuttle darts to make up the numbers!

The biggest difference from history may be that because the preparation of sulfuric acid was popularized in advance because of the emergence of Zhang Ran, the bullets in the hands of the soldiers of the Eighth Route Army or the guerrillas were much more abundant than the same period in history!

But the effect of having bullets but no guns, and having guns without bullets, is actually the same as the old eunuch looking at a stripped beauty who can only stare dryly, no ball!

If you want to give full play to the combat effectiveness of the Eighth Route Army that is not afraid of sacrifice and has the courage to work hard, the only solution is to have more bullets and more guns!

Now, Zhang Ran's arrival has improved the problem of insufficient bullets for the Eighth Route Army in advance, so next, Zhang Ran is bound to want to change the situation that there are bullets but not enough guns - he doesn't want the Eighth Route Army to pinch bullets and have no guns, so they can only play as little pebbles and little devils!

Now, the detachment has even made prototype guns, but because there is not enough steel of acceptable quality, the guns cannot be mass-produced at all, and then equipped with soldiers!

The only solution is to steal the railroad tracks of the little devils to make guns!

The rails of the little devil are of good quality, although they are not up to the quality required for authentic guns, but they can barely be used, but after they are caused, the service life of the guns is a little worse......

But as long as it is made and can be used, Zhang Ran will not care about such a small defect as the service life is slightly shorter than that of a normal gun - compared with not lifting directly or lifting but not firm, which is more desperate, I believe that fools can figure it out!

It's just that it's not so easy to steal the little devil's rails!

Because of the lack of troops, the little devils had to use more railways to achieve rapid troop mobilization!

In this case, the little devil attaches great importance to the protection along the railway, although not to mention three steps, one post, five steps and one sentry, but there must be a stronghold every ten miles and eight miles, but if an abnormal person is found, it can be arrived in half an hour, which is absolutely no problem!

The rails are often several meters long and weigh in tons.

Even the small rails in the two types of rails have to be carried away by more than a dozen men, once the little devil maneuvers, it is a trivial matter to work in vain, and the rails are not stolen but lose their lives, which is sad......

Not to mention the fact that you can't take away the large railroad tracks even if they are placed in front of you - that's like dozens of guns in front of you, but you can't get your hands on them!

But if the grinding wheel cutting machine is manufactured and can easily break down a section of rail into dozens of catties in a very short time, to the extent that it can be easily taken away, it will be a great blessing for all the Eighth Route Army teams who want to fight the idea of little devil rails!

This is the fundamental reason why Zhang Ran wanted to build a grinding wheel cutting machine a long time ago!

can steal railroad tracks to make guns, and can destroy the railway transportation line of the little devil, so that the little devil has to invest more energy along the railway, this kind of thing kills two birds with one stone, Zhang Ran doesn't want to do it, that's weird!

Now, although the grinding wheel cutting machine can be used, it takes five or six minutes to cut an iron rod the thickness of a thumb, so how long does it take to cut a rail?

It's strange if Zhang Ran can be satisfied!

He didn't just want a wheel cutter, he wanted a wheel cutter that could quickly cut off the rails, and he wanted the kind of wheel cutter that would have been stolen by the little devils when they reacted!