After a pause, Yuan Fang continued: "Relatively, gunpowder has a certain danger, and these sandbags are protective measures, so as not to injure everyone when the gunpowder explodes when I configure and experiment with gunpowder." ”

Xia Yi was surprised and said, "So powerful? Isn't it dangerous for you to configure gunpowder, brother-in-law? ”

Yuan Fang said disapprerovingly: "It's okay, I'm prepared, when the time comes, put on heavy armor, hold a shield, and have so many sandbags, even if you accidentally explode, you will be fine." ”

Sang Rou objected and said: "No, brother-in-law, you can't take risks, leave this matter to me, you can guide on the side." Jieyue, Ye Qingru, and Xia Yi all expressed their opposition to Yuan Fang's risk, taking this extremely dangerous-sounding job on themselves.

Yuan Fang moved his face and interrupted the women's words: "Okay, don't persuade you, this matter is settled." ”

Feeling that his tone was a little heavy, Yuan Fang said gently: "You don't know this thing, it's easy to be dangerous, I'm different, I know this thing very well, and I know how to do it safer." ”

After a moment of silence, Xia Yi was the first to speak: "Brother-in-law, I know you're worried about us, but I'm still not at ease." Yuan Fang looked around at everyone, and in the end he really couldn't help it, so he promised to let them follow him to help him get the shield, and a few girls stopped.

The area of the factory is large enough, the width of the left and right sides is almost seventy meters, so it saves running around, Yuan Fang set up a tent on the other side of the factory and settled down.

Not to mention, the feeling of setting up a tent in the factory is different, there is no wind and sun, and the feeling of living in the bedroom is almost the same, but it is not ventilated and a little hot.

The Plum Blossom Chamber of Commerce attached great importance to Yuan Fang's requirements, and dared to go to nearby cities to secretly purchase them overnight, and early in the morning, he sent all the required materials to the military factory.

After the materials were all ready, and Yan Xiong was sent away, Yuan Fang first took out the flint powder he got from the pirates and tested the power, for the sake of safety, Yuan Fang only used a little bit, but the result was that Yuan Fang was taken aback.

Yuan Fang first put the dried gunpowder into a small glass bottle and compacted it, found a piece of oilcloth and lit it and threw it in, and then immediately retreated, but Yuan Fang still underestimated the explosion speed of the gunpowder, and heard a loud bang without even selling it.

Sang Rou and Yuyue, who were holding heavy shields beside Yuan Fang, were also frightened, and they stayed for a while after the explosion before they came back to their senses, looked at the faint dent on Yuan Fang's mask, and were afraid for a while.

The sound of explosions echoed in the factory, Ye Qingru and Xia Yi were worried about Yuan Fang's safety and rushed into the sandbag fortress, seeing that the three of them were fine, they finally put their minds at ease, and helped the three people who were a little stiff to come out and find a place to sit down and rest.

At this time, Yuan Fang saw that the shield was blackened, and Sang Rou and Yuyue's helmets were also faintly scorched, Yuan Fang hurriedly asked: "Sang Rou, Yuyue, are you injured?" ”

Sang Rou took off her helmet and shook her head and said, "I'm fine, I'm just startled." ”

Yuzuki had palpitations and said, "It's quite scary. ”

The door of the factory was pushed open, and Tian Erniu hurried over with a few female soldiers, asking as she ran: "Brother-in-law, what happened?" ”

Yuan Fang smiled and said, "It's okay, it's okay." Tian Erniu looked at the smoky roof of the shed, then at the sandbag fortress, and finally made sure that Yuan Fang and the others were okay, and then left with people and continued to guard outside.

After resting for a while, his ears were no longer buzzing, Yuan Fang glanced back with palpitations and said, "It seems that you can't experiment here in the future, otherwise this place will collapse sooner or later." ”

Sang Rou wiped Yuan Fang's helmet with her sleeve and said, "Brother-in-law, isn't there any other way, if the armor is strong enough, we might be finished." ”

Yuan Fang thought for a while and said, "It's me who is in too much of a hurry, I should study the fuse first, oh, it's the fuse." Not long after, Yan Xiongfeng, who was alarmed by the explosion, ran over to ask what was going on, followed by Guan Xiaoyun and Hongyi, after these people were all sent away by Yuan Fang, Yuan Fang began to study the fuse step by step.

This thing is not very difficult, Yuan Fang dipped a thin layer of glue with a rope, and then rolled a layer of gunpowder powder on the outside, and finally succeeded after many attempts, but the gunpowder outside was not uniform enough, the speed of burning was uncertain, and the gunpowder was very easy to fall off and lose its effectiveness.

Xia Yi helped solve this problem, Xia Yi's method was to brush the glue with the thinnest oiled paper, hang a layer of gunpowder powder on it, and then take a piece of string, wrap it around it with gunpowder paper, and cut it and stick it after reaching a certain thickness, so as to prevent the gunpowder from falling off, and after testing, the burning speed of this new fuse is more stable.

The fuse was out, and then it was the turn of the most important part of the gunpowder, before Yuan Fang used ready-made gunpowder obtained from pirates, and next, Yuan Fang had to configure more powerful explosives. The formula of the explosives is on the pirate leader's note, Yuan Fang has seen it, the inventor only has a theoretical basis for this kind of thing, and before he has time to configure the physical object for verification, he encountered the pirate and was killed by him, and Yuan Fang wanted to get this thing.

Explosives, simply put, ordinary gunpowder has the effect of explosion when compacted, but the ingredients are different, the power is different, Yuan Fang wants a powerful explosive, so he did not hesitate to take the risk and start trying.

In the next two days, Yuan Fangna, who had all the materials, kept arranging gunpowder day and night, recording the ratio and materials, and then kept experimenting to observe its power.

Yuan Fang had already moved the experimental field outside the factory, and made a sandbag fortress in the open space about fifty meters away from the factory, for the sake of safety, the fuse was even more long, and the successive explosions sounded from time to time, making the nearby workers panic, not knowing what was going on, Yan Xiong came over several times to express his dissatisfaction, but when he witnessed the power of explosives once, he didn't say anything, and moved the nearby workshop to a farther place.

After continuous experiments and continuous verification and summary, Yuan Fang found that in addition to the gunpowder itself, the power of the explosion also has a certain relationship with the degree of compression.

In two days, according to Yuan Fang's requirements, the blacksmith made a lot of bomb shells and two two-meter-long, 30-centimeter-thick, 10-centimeter-caliber artillery barrels, the cannon body was poured as a whole, the material used was an alloy with excellent toughness and hardness, and the inner chamber was polished extremely smooth, the rifling line was straight, and there was almost no deviation.