"Young master, you're here, those ballistae and trebuchets have been distributed, and we have also supported some crossbow arrows." Jidu said immediately when he saw Wang Dawei.

After Wang Dawei nodded, he turned his head to Wang Yuhe and said, "Dad, you are good, these are all master-level blacksmiths!" ”

"You kid laughs at Lao Tzu, don't you think Lao Tzu is here every day to give you your life, you have to accompany your in-laws." Wang Yuhe glared at Wang Dawei angrily and said.

In fact, he has long been at the peak of high-level blacksmithing, but he used to play around with the parents of the little goblin and did not practice life skills again, and this time he still came back to help when he knew that there was a big war here.

However, even a paddler like him can reach a master blacksmith, and if other players find out, I don't know how many will cry and faint in the toilet!

"Don't be stunned, your mold is not too easy to use, the success rate is a bit low, an average of three or four can succeed one, are you kid cutting corners."

Wang Yuhe didn't have any pressure to speak to Wang Dawei.

Ji Du didn't dare to say anything on the side, he could yell at Wang Yuhe a few times when Wang Dawei was away, because Wang Yuhe was his apprentice, but when Wang Dawei was there, he had the lowest status, because Wang Yuhe was his master's son, which was so interesting.

Wang Dawei looked at the successful crossbow arrows on one side, there were only more than forty in total, all of which were smelted and cast from gold-level ore, and it was obvious that there were a lot of failures for such a long time, but if they failed, they could be melted and recast, but they would not waste ore.

"Dad, you can cast another one for me to see." Wang Dawei looked at the crossbow arrow and said to Wang Yuhe.

"Okay, let's see if we have something to do wrong." Wang Yuhe said and skillfully operated with Jidu.

When the molten iron is injected into the mold, Wang Yuhe picks up the big iron tongs and clamps the grinding tool and directly immerses it in the water, the temperature drops after a burst of white smoke, and a crossbow bolt can appear when the mold is opened, but this time the whole crossbow bolt shows a lot of cracks after the mold is opened, and this time it failed.

"Son, you see it, that's it, what do you think is the reason? Is it that your mold is not good or that we are not doing the right steps? Wang Yuhe asked Wang Dawei.

"That's it, Dad, do it again, this time I'll do it, and you'll be watching." Wang Dawei took the pliers in his father's hand and said.

"Okay, then we'll see how you kid gets it." Wang Yuhe nodded in agreement.

The steps are still the same, after the molten iron is poured into the mold, Wang Dawei clamps the mold with large pliers, but he does not put it into the water immediately, but pinched the pliers with one hand, and the other hand picked up a small iron hammer next to him and gently knocked it back and forth on the mold.

After only a dozen seconds, Wang Dawei put the abrasive into the water, and when he took out the mold and opened it, a good crossbow bolt appeared in front of everyone, and the quality of this crossbow bolt was much better in terms of gloss.

"It's as simple as that? Vibration principle! Wang Yuhe muttered.

In fact, when Wang Dawei began to knock on the mold, he probably knew what was going on, to put it bluntly, there was air in the molten iron in the mold, and the condensation failure rate in the water was definitely high.

These are simple to say, but under normal circumstances, it is not easy to think that they are neither professional iron strikers nor in reality, NPCs also have such blind spots, because they do not have molds.

The reason why Wang Dawei is clear is very simple, he and Kaitian have been making combat uniforms for many days, and the use of spiritual power has reached the microscopic level, when Wang Yuhe operated, he kept looking at the situation inside the mold, and the failed crossbow bolts would crack because of thermal expansion and contraction, and some of them were because of the air, and the space formation could not be successfully formed.

After the appearance of glass, in order to solve the problem of bubbles, many people spent a huge amount of money in exchange for the word stirring, which is actually a bit similar to Wang Dawei's current situation.

Of course, the crossbow bolt will not fail if there is no space formation, after all, the ordinary crossbow bolt is also so thick, and a small number of bubble defects will not deform or break the crossbow arrow, but with the formation the requirements are very high, once the formation is incomplete, the crossbow bolt will be scrapped.

In this way, several crossbow bolts were made successfully, and the quality was also very good, and the next step was the specific test, because Wang Dawei was not there, no one came to preside over the test firing.

You can understand that the leader is not there, no matter how good your experimental data or actual test is, he has not seen it, and only when the leader comes to actually see and feel it can it be considered successful, otherwise it is useless for you to test more.

The test was simple, just send a soldier out and place three targets 400 meters outside the castle to start the test firing!

The three targets are spaced about ten meters apart, and the normal deviation will not reach such a large size, this crossbow arrow is a giant crossbow arrow, each one is 5 centimeters thick and 190 centimeters long, and the smooth arrow has a mysterious pattern on the body.

There are three layers of giant crossbows on the castle wall, so each of the three floors tries to shoot a crossbow arrow corresponding to three targets.

A giant crossbow only needs two people to operate, and there is a special winch when opening the crossbow, one person can open the crossbow, and the other person is responsible for changing the crossbow bolt and helping to adjust the angle of the shot.

The first crossbow bolt is fired by the shooter on the first layer, hitting the target directly, and after the crossbow bolt hits, it explodes directly and completely destroys the target, which is basically invisible residue.

The second crossbow bolt was launched by the giant crossbow in the middle of the city wall, but this time it grazed the target and shot over, failed to hit directly, the crossbow bolt continued to fly out of more than 20 meters before it exploded on the ground, although the distance was not close, but Wang Dawei saw it clearly, the scope of the explosion was about 3*3 area, but the power of the explosion could not be estimated.

The third crossbow arrow was shot by Wang Dawei himself, he is also familiar with the use of the ballista, and when he used to kill the boss, he often relied on the crossbow car Yin BOSS, plus the mental power is strong and the accuracy is much higher.

The crossbow flew out and hit the last target accurately, but this time the explosion was louder, and the area covered by the explosion was as big as 5*5, because this crossbow was the one made by Wang Dawei himself, and it was obvious that the crossbow bolt without air in it was much more powerful.

"This kind of crossbow bolt needs to be made more, the Divine Court has a flying class, and it is necessary to prevent the opponent's air power." Back in Jidu's production room, Wang Dawei explained.

With these crossbow arrows, the combat power of your side will increase by more than one step, and if the opponent really sends air troops, it will definitely be able to kill a large number of them, so this kind of crossbow arrows must not be missing.

"Okay young master, if it's convenient for the young master, let's go cut down some god-level wood, it's better if there are more Flame Thunderbolt Cars and Thunderbolt Bombs."

As a dwarf, Ji Du certainly understands the power of the Flame Thunderbolt, and the six thunderbolts fired on the city wall before were arranged by him, and three of them can be killed directly if they hit the god-level boss head-on.

"What materials are needed to make thunderbolts, you tell me, and I'll find out." Wang Dawei asked Jidu.

He wasn't very worried about god-level wood, as far as he knew, there were at least two or three places, one was the place in the extreme north where the ancient demon silkworm was killed at that time, where the climate was extremely cold, there was a lot of high-quality wood, and the wood in the extremely cold place was harder and more wear-resistant.

The other is the mountain range where the golden feather was entrenched, because of the golden feather, there are no more powerful beasts in the mountains of that area, but the quality of the wood is particularly good, especially the peak where the golden feather originally stayed, there is a lot of high-quality wood.

Finally, there is another place, that is, the territory of the Heavenly Demon Clan that Howling once took Wang Dawei to, and at that time, in order to kill the Winged Demon King, Dawei paid attention to checking, there are not only high-quality mines, but also a large number of high-quality wood.