The first method is to grind high-purity saltpeter and realgar into powder, melt it into a gelatinous form with alcohol, add iron powder, dry it in small dots on the paper, and brush it with a thin layer of gum.

The difficulty of this method lies in the purity of saltpeter, which is not a problem for Hongtao, who can already make potassium nitrate by chemical preparation. Anyway, it's a test, and it doesn't take too many quantities, just try it in small doses.

The process of making it went smoothly, and it took less than three days to complete the clay fire cap the size of fifty soybean grains. In order to test the effect of the firing device, Hong Tao also asked Cixiang to use steel to create a new firing device by hand, replacing the flintlock device on a rifle.

Not to mention, this thing is really easy to use, the hammer has less force than the flintlock device, and it can shoot the fire cap smoothly. In this way, the spring part of the most challenging steel can cut corners, and the difficulty of processing is also reduced a lot.

"Your Majesty, why don't you ring it? It's blown up! But the good times didn't last long, and after five or six attempts, Swann couldn't fire the gun again. The fire cap was successfully fired every time, but it could not ignite the fire in the barrel anyway.

“…… The ignition hole is plugged...... Give me a steel needle. Hong Tao took it and looked at it, and quickly found the problem. There seemed to be something stuffed in the fuse hole under the fire cap, and the flames could not enter the barrel, and of course they could not be hit.

"Your Majesty, I'll come......" Kindness didn't use Hong Tao to do it himself, the firing device was made by him, and he knew best how to deal with it.

"Don't move, what did Your Majesty add to this?" Cixiang changed several steel needles of different thicknesses, but he didn't poke the things in the ignition hole.

"Iron powder...... Is it the molten iron powder that plugs the holes? Hong Tao instantly understood the reason, and without waiting for a kind explanation, he began to grin. Iron powder melts quickly when encountering high temperatures, which is simply welding technology, and the ignition hole is welded to death, unless it is drilled with a small drill bit and pierced with a steel needle.

"I'm afraid, can you replace the iron powder with something else?" Cixiang couldn't think of a solution, so he could only suggest that Hong Tao replace the iron powder.

What to change? Iron powder is rubbing, so use talcum powder? Sand? Even the flour Hongtao has tried, but the result is not the right one. Either it doesn't make a sound, or it gets more blocked. In the end, Hong Tao had to give up this earth fire cap just because of a small friction agent problem.

In fact, it is not completely abandoned, the hammer type ignition method is not successful, and it can also be made into an overall bullet in later generations, fix the earth fire cap at the back of the eggshell, and use the firing pin to fire, there is no problem of blocking the ignition hole, and with the overall bullet, you can make a rear-loading rifle, and even semi-automatic, automatic, and machine guns can be considered.

But it's still that problem, Hong Tao has shot a gun, but he doesn't know much about guns, because shooting a gun and playing with a gun are completely two concepts, and there is no environment for playing guns in China, he doesn't know very well what the firing device, bolting device, and shell removal device of the rear-loading rifle are all about, and he can't even draw a simple sketch, so he can't explain the general structure of this new type of firearm to them with kindness, just by their imagination, God knows when it will be built.

However, the development of the overall copper-shelled bullet was put on the agenda by Hong Tao, he probably knows the structure of this thing, and he can also draw a simple sketch, and the principle can also be explained clearly with kindness, in addition to the problem of mass production can not be solved, it is no problem to make some experiments by hand.

As for what these bullets are made for, they are useful! Hong Tao couldn't remember the mechanism of the rear-loading rifle, but he knew the structure of the revolver, this kind of pistol was even simpler than a flintlock pistol except for the bolt part, which was even simpler than a flintlock pistol, as long as there was a copper-shelled bullet and the fire cap could be fired smoothly. Regardless of the problem of mass production, I first insert two handfuls on my waist to play, others use singles, and I use a revolver, so I have to be more advanced than others to be fun.

It doesn't matter if the first kind of earth fire cap is unsuccessful, Hong Tao has a second killer feature, chlorine, acid, potassium!

This thing is a little troublesome, it needs chlorine, acid, potassium + sulfur + sawdust. Sulfur and wood chips are readily available, and chlorine, acid, and potassium can be prepared from chlorination, potassium, lime water, and chlorine gas; Chlorinated potassium can be obtained by calcining and crystallizing potassium feldspar and calcium chloride; Calcium chloride can be obtained by reacting limestone with hydrochloric acid, and chlorine is a by-product of the Lübran alkali process.

This process was barely completed, but there was one problem he could not completely solve, that is, when the calcium chloride was removed in the last step, the temperature needed to be lowered to below minus 10 degrees. It was difficult to achieve this temperature by saltpeter ice alone, and the second test had to be abandoned halfway.

"Oops...... I still don't have the appetite to eat a fat man in one bite. "I worked hard for several days, but the end result was in vain. In fact, science is a thing, a hundred experiments may not succeed once, it requires perseverance and perseverance.

It's a pity that Hong Tao lacks the virtue of perseverance in his character, and when he encounters difficulties, most of the time he chooses to take a detour, and then give up directly. It was the same this time, he simply gave up, and the flintlock pistol was the flintlock pistol, and with the help of smokeless gunpowder, the flintlock pistol was still not much worse than the firing gun. Besides, everyone else is using a big blade, and it's too bullying to grab it directly with the rear load, and it's a waste to lead too much.

This time, Hong Tao stayed in Tu's tribe, or Sun City, for a short time, only more than two months. At the beginning of April, he got on a small sailing boat and returned home, and after leaving the Gulf of Mexico, he did not go southeast, but went all the way west, straight to the Strait of Gibraltar.

He went on a mission, and without oil, he had nothing to do in Cité Soleil. Without him, the production process of cotton would have been gradually perfected. The overall bullet and revolver haven't been taken care of yet, so leave it to Kindness to play slowly. He didn't need to command horses and ships, and Joseph's cult didn't need to make miracles every day. Aside from being a big horse for his son to ride or a mother to ride, Hong Tao is basically a waste now.

In the spirit that waste can also be used, Hong Tao volunteered to find oil for the kingdom of God. This is a job that only he can do, and since there is no oil field near the Gulf of Mexico that is buried at a relatively shallow depth, he can only continue to fight the Arabs' ideas. If you want to transport oil from the Arabian Peninsula to Central America, it would be too far to go through the port of Cape Town. It was also not appropriate to transfer oil from the port of Cape Town to Cité Soleil, where the oil was sent in fixed quantities by the supply fleet, and was easily spotted. (To be continued.) )