Wizard: I brought the wrong system

Although the nitroglycerin has been prepared, the follow-up work is not easy.

Generally speaking, nitroglycerin also needs to be mixed with diatomaceous earth in a ratio of 3:1 to obtain the commonly used yellow safety explosive.

Diatomaceous earth, a kind of khaki siliceous rock, is composed of the remains of ancient diatoms, the main component is amorphous silicon dioxide, and also contains opal and other small amounts of oxides. It is chemically stable, loose in texture, and can be observed under a microscope. To a special porous structure, the number of pores is about 5000-6000 times that of charcoal.

Therefore, diatomaceous earth not only has stable chemical properties, but also has an excellent adsorption effect on liquid substances.

Yarrow doesn't know if there are diatoms in this world, nor does he know whether the current land is a seabed tens of thousands or hundreds of thousands of years ago, and he doesn't know where to find diatomaceous earth, so he can only use his brain on the design plan.

As for the instability of nitroglycerin, it can be solved by directly installing it in the space ring.

The interior of the space ring is like a balloon pocket, and only when something is put in will the space in that part expand.

The edge of the space can be sensed with mental power, but Yarrow doesn't know what the edge looks like, only knows that the temperature will not be transmitted or penetrated.

It's just that the space of the entire space ring is integrated, and the temperature of the internal items will be transmitted and influenced by each other, and finally reach an average temperature.

Yarrow drew a sketch. Since the amount of nitroglycerin is not much, it is necessary to make effective weapons and make full use of them.

The best way is firearms, which happened to be researched by Yarrow a long time ago.

The first is to borrow the structure of the oil tank and reserve multiple partition wave-proof plates inside the bomb to reduce the liquid collision inside the bomb.

This design is to prevent the bomb from shaking and self-exploding in mid-air when the bomb is dropped.

Then it is necessary to engrave the magic pattern inspired by the fire element on the outer metal shell. It doesn't need too much effort, and it is enough to quickly raise the temperature to more than [-] degrees.

The engraved magic pattern traces can evenly crack the metal shell into several sharp fragments when it explodes.

One thing, two harvests, somewhat like killing two birds with one stone.

"Wait... Since the magic pattern is going to be used as a trigger, why not draw some patterns to cover up the magic pattern?"

"More patterns can produce more fragments, and can guide the enemy's thinking like 'fear and coercion'."

"It would be even better if others could mistakenly think that these are 'ordinary' explosive flints."

Yarrow had seen the power of exploding flint.

At the end of the desperate fight with Kenan Nabi, Kenan Nabi used multiple bursting flints to blew himself up to death.

Judging from the results of the explosion, the damage method of the Explosive Flint is restrained, like a burst of fireball, the magic power and high temperature erupt in a spherical range, but the real effective killing radius is only about 1 meter.

The grenade is different. The explosion of the grenade is like a hedgehog that explodes, and the most concentrated damage radius is 5-6 meters.

If the enemy defends with the grenade and uses the method of defending against the explosive flint, then he can still welcome a huge surprise.

The sputtering fragments are physical attacks, and the damage radius can reach [-] meters!

Of course, the more edges there are, the fewer fragments there may be.

Attacking mortals may also cause disability, injury and loss of staff.

Attacking the extraordinary may not necessarily have any results.

But within the range of 5-6 meters, high temperature, high pressure, fragments... the effect of multiple blows will definitely make the victim extremely 'satisfied'.

"The surface layer can be made of 'fire ant steel'. Compared with ordinary materials, this extraordinary metal can also have a stronger impact on the magic barrier, which is equivalent to adding another heavy magic damage."

'Fire Ant Steel' is the only extraordinary metal in Yarrow's hands, otherwise 'Magic Stone' would be the best choice in his mind.

The 'Magic Stone' has a better effect on breaking through the magic barrier, and its color is also very similar to the Explosive Flint.

After designing the general plan, Yarrow began to concentrate on production.

It is not difficult to make a single structure with the help of high temperature resistant magic hands.

When the material is still half-solidified, Yarrow uses magic hands to shape it. If the material 'hardens', it can be heated by hot melting. The whole process is similar to kneading a ball of mud.

After the rough shape is completed, the magic pattern route and concealed patterns are first carved on the metal surface, and then soaked in ice water to cool down.

According to the amount of digested glycerin at this time, Yarrow made a total of five grenade casings, each with a capacity of about 160 grams.

Use a syringe to extract nitroglycerin, and inject them one by one into the cooled utensils. After confirming that there is no air inside, seal them with mortise-and-tenon nails.

When the seal is sealed, a little bit of nitroglycerin will leak out, but the shell and digested glycerin have been cooled down, even if some leak out, it is difficult to cause an explosion.

Up to now, except for the fact that these grenades do not have a trigger device, everything else is almost done.

If they were restored to normal temperature and fell to the ground, they might all be detonated successfully.

——It's a bit like dropping a cannon, but it's not impossible.

"The next step is to add magic pattern ink to the magic pattern groove."

Adding magic patterns to the magic pattern groove does not mean that it is enough to pour some magic pattern ink into it, but it needs to be redrawn from the beginning to the end.

And in the process of drawing, the spiritual power and magic power have to be constantly changed and adjusted like releasing spells.

The only good news may be: the activation condition of nitroglycerin is not high, the heat conduction effect of metal is not bad, and the required heating magic pattern does not need to be too complicated.

Draw the magic pattern, apply the medicine to cure the magic pattern, pour the ink again to cover the magic pattern, apply anti-rust oil...

A metal ball covered with strange black lines appeared in Yarrow's hands.

Both the heating magic pattern and the explosive flint belong to the fire magic pattern. In addition, Yarrow deliberately placed the concealed pattern on the explosive flint, and the final product looks quite similar.

-Like a devil fruit.

Yarrow looked at the finished product just now, and muttered to himself, "I've only seen it a few times, who remembers what the Explosive Flint looks like, it's almost done."

"Maybe it's better this way. Those with a bit of knowledge can see the fire magic pattern, but it looks more real."

Once you have the first finished product, just follow the steps for the next four pieces.

……

From yesterday's busy work to today's noon, when the rain cleared, five strange metal spheres were finally ready.

On the corners of the hang glider, the remaining rainwater 'tick-tick' fell.

Yarrow stuffed a mouthful of white flour steamed buns casually, and moved the binoculars to look at Perrin's territory again.

"Here comes the bait!"