Zhang Wei and He Jinhai had a heated discussion, and Zhang Wei said that he would do it, preparing to make a blaster.

Zhang Wei took out a large piece of paper and drawing tools this time, and began to design and plan the shape of the blasting cylinder.

Explosive canisters, which require canisters, explosives, detonators and fuses, explosive detonator fuses, are available in the troops, so there is no need to worry about it.

What needs to be solved is the barrel, the barrel of the blasting barrel, it is impossible to reach the level of the M1 blasting barrel of the US army.

The material of the cylinder can not be too fragile, Zhang Wei vaguely remembered that the Japanese army took bamboo to make a blasting cylinder in a hurry, and the famous three warriors of meat and eggs were used to make an emergency blasting cylinder.

The cost of using bamboo and wood to make a cylinder is low, but it is not easy to store, and it cannot prevent water or heat.

Zhang Wei planned to manufacture it in large quantities and store it as much as ammunition, and the barrel was too fragile and easy to affect the power.

"Captain, why don't you use a seamless steel pipe for the cylinder, we used it when we built the bridge, and it was very strong." At this time, He Jinhai put forward the suggestion of using seamless steel pipes as cylinders.

Seamless steel pipe? It does sound good, but the problem is that there is no one in the army now, and the production capacity of the rear arsenal is all used to produce weapons and ammunition, how can there be effort to make such a demanding thing.

"This thing is good, but it is not available in the army now, so let's go back and ask people to look for it on the black market, there must be dumping goods on the black market." Zhang Wei said.

He Jinhai nodded in agreement, Zhang Wei planned to ask He Kun to look for it on the black market, since it was built, it was necessary to build the best efficiency, the seamless steel pipe was well sealed, and the use power was the greatest, plus the teaching team now has enough small treasury, and it is not a problem to buy some seamless steel pipes.

On the issue of charges, He Jinhai and Zhang Wei also discussed for the longest time.

He Jinhai is a professional engineer officer, he believes that about four kilograms of explosives are the most perfect, two blasting canisters can blow down a solid wooden bunker, but the disadvantage is that there are too many charges, resulting in excessive weight, inconvenient for soldiers to carry, and greater pressure on the cylinder.

The scheme of a four-kilogram charge, which was eventually abandoned.

The three-kilogram charge is a little less, He Jinhai told Zhang Wei that the efficiency of the three-kilogram charge is not low, but it is not high, the demining is not bad, and it is not easy to blow up the bunker.

After consultation, Zhang Wei finally planned to adopt a compromise plan, using a 3.5-kilogram charge to blow up the bunker and plaster mines, and the weight was also within an acceptable range.

The charge scheme and cylinder material were determined, and the rest was to improve the design, and Zhang Wei copied the design as much as possible by relying on the memory of later generations, and listened to some of He Jinhai's opinions.

In the end, it was decided to install a detonator at the front end of the cylinder, the main body was filled with the explosives that had been distributed, and the space for the installation of the lead was left at the end, and the design length of the cylinder was 1.2 meters, and 3.5 kilograms of explosives were installed inside.

When necessary, multiple blasting canisters can be connected to carry out minesweeping and blasting operations to avoid casualties among soldiers.

Those blasting cylinders of the US military have good craftsmanship and are mass-produced, and they are connected by the spiral shaft in the cylinder, and the two blasting cylinders are inserted together, and they can be screwed on and used as soon as they are twisted, and the brigade is taught to engage in self-control, but there is no such condition.

Finally, He Jinhai drew on the experience of connecting pontoon bridge builders in the bridge industry, and suggested to Zhang Wei that a thicker seamless steel pipe could be used between the two blasting cylinders, and the two blasting cylinders could be fixed together.

The end and front end of the steel pipe of the blasting barrel are punched with holes, and the thicker steel pipe sleeve is the same, when the hole needs to be connected, the two sections of the blasting cylinder are sleeved in the steel pipe sleeve, and then inserted into the small hole with screws or steel rods, and the blasting barrel and the steel pipe sleeve are fixed, and then sent forward.

In addition, considering possible accidents and space problems, Zhang Wei also plans to make a small blasting canister with a charge of two kilograms and a length of less than one meter, so that a soldier can carry five or six, and when the normal specifications of the blasting canister are limited to space and other factors cannot be used, this short and medium blasting canister can be used.

The standard long and wide blasting barrel, 1.2 meters long, with a charge of 3.5 kilograms, and a short blasting barrel, about 90 centimeters long, with a charge of 2 kilograms, is made of high-quality seamless steel pipe as the blasting cylinder barrel, with small holes outside, and is connected by a sheath.

All blasting canisters and accessories are painted with military green paint for easy concealment.

If the trial production is successful, a large number of them will be equipped with a large number of combat engineer platoons, and the engineers will certainly be able to play a great role in engineering operations and assault operations, and the weight itself is not large; one person can carry two or three, and the short one can carry five or six, and a platoon will have about 200 of them in total.

It can be imagined that during the attack operation, the infantry of the teaching brigade appeared on the Japanese defense line and fortifications that could not be defeated, at this time, the brothers of the combat engineer platoon launched an attack under the cover of strong firepower, and attacked the Japanese army with more than 200 blasting canisters.

After making a good design, Zhang Wei immediately ordered to prepare for manufacturing, he first asked He Jinhai to leave, and was ready to hand over all the manufacturing tasks to the engineer platoon, and when the materials were in place, He Jinhai immediately took the whole platoon to participate in the construction.

The blasting canister is equipped with them, let them personally construct, can better let them understand the performance and characteristics of the weapon, the user personally manufactures the equipment for their own use, and can also improve the quality of the equipment to a certain extent, who wants to use the inferior quality weapon themselves?

The procurement task was handed over to He Kun and He Platoon Commander, who specialized in this work, and his baggage re-arrangement, in Zhang Wei's eyes, also had the role of running transportation and busy logistics.

In addition to basic physical training and combat technique training, Zhang Wei did not plan to let them participate in very advanced tactical training.

Zhang Wei asked He Kun to go to the black market to purchase two kinds of steel pipes, the steel pipe for the long blasting cylinder, the diameter of the short blasting cylinder is about six centimeters, the steel pipe is about four centimeters, and the steel sleeve used for connection is a short steel pipe of seven centimeters (the short blasting cylinder is not considered for connection, and the connection is mainly for the long blasting cylinder), and the steel pipe is planned to make a small hole of about five millimeters.

Therefore, He Kun had to buy some small steel rods with a five-millimeter effect to connect and use.

First of all, it is necessary to trial production, so in terms of purchase volume, the long steel pipe is tentatively set at 50, the short one is 50, the steel rod is 100, and the sheath is 100.

Wait until the trial production is successful, and then put it into large-scale production.

He Kun took over the task to buy steel pipes, He Jinhai first went to order people, and then went to check the equipment, make the lead needed for the blasting canister, and teach the brigade to prepare the detonators and explosives by themselves.

Last time, twenty-five boxes of bulk explosives for sappers were allocated, which were manufactured in the standard of the rear arsenal.

Each box of explosives is about 24 catties, and there are about 600 catties of explosives in total.

According to a rough estimate, it can fit about 200 blasting canisters.

Zhang Wei ordered He Jinhai to take out all the explosives, disassemble them, and reduce the volume as much as possible so that the steel pipe could be filled with explosives.