Next, it was up to him to watch his performance alone. The electric grinding wheel was brought out, and the sparks and sparks rubbed against each other, grinding the tip of the steel drill even sharper, and then opened two inches of it vertically.

Blood tank.

Then light a gasoline blowtorch to heat the newly polished part. Use an infrared thermometer to monitor the temperature when it reaches above 800 degrees. Quickly put it into water to quench. After the temperature drops, use a blowtorch to heat it to about 200 degrees. Set it aside to cool down naturally.

.

Hong Tao's major is metal heat treatment, and he is very familiar with this kind of steel drill made of 45 medium carbon structural steel. Water quenching is to maintain hardness, but if the temperature is cooled too fast, great stress will be generated inside the component due to uneven cooling and heating.

Then heat it to about 200 degrees and use low-temperature tempering to eliminate this part of the stress, so that the metal will not be hard and brittle in one part and soft and tough in another part, which will easily crack and deform.

Of course, the tools and materials he used did not meet the process requirements. Isn't this just makeshift? Even if he had an electric furnace and quenching oil, he didn't have that much power available. The steel drill treated in this way is a very good gun head.

Speaking of skulls, they can be cut into reinforced concrete.

But how should such a bare steel drill be installed on a wooden pole? You can't really tie it with a rope like Zhang Ke said. Indeed, even if you use iron wire to tie Hong Tao, it's too confusing.

If it falls apart, it’s okay for others to use it, but you must be responsible for your own use.

The method he used was actually the same as the method of attaching a shovel head to a shovel handle. He put an iron ring on the wooden handle, and if he was more careful, he inserted a thin bolt, or if he was more bold, he simply drove a nail and it was done. Anyway, as long as the wooden handle is stable, the gun head will

Just don't plan on taking it off.

But how to install an iron sleeve on the back of the drill bit? Not only Zhang Ke couldn't figure it out, but even Chu Qiu couldn't figure it out. Could it be that the tail of the drill bit had to be red-hot and forged? The landlord changed the blacksmith again!

"Prick...prick...sizzle..." Hong Tao is not a blacksmith, and he doesn't know how to forge, but he can weld.

Get four pieces of iron and weld a sleeve to the end of the drill bit, and then you can install the wooden handle. What? It's not round! I'm sorry, it doesn't matter if it's square or round. You can put the wooden handle in and fix it.

It's done.

But the power is cut off, can the welding machine still be used? The answer is still the stack of batteries. If there is a high-power inverter, the welding machine is certainly not a problem. It is not much work, and it is finished in a few clicks.

But Hong Tao's high-power inverter happened to be broken. The power of the 3000-watt inverter can only be stable at about 1500 watts. The current is too small to power the welding machine. What should I do?

The answer is batteries! There is a trick. When welding small workpieces, you can actually do it without a welding machine. You only need a welding clamp and a ground wire.

Specifically, four 80A car batteries are connected in series, the positive and negative poles of the welding wire and the ground wire are connected, and the welding rod is clamped to start welding. Although there is no electric welding machine to start the arc easily, it will be no problem if you click a few more times.

A kind reminder, if you want to try it after reading this, it is best not to try with a new battery, but an old one. This method can only be used as an emergency, not as a normal situation. It is equivalent to short-circuiting the positive and negative poles of the battery, and the instantaneous high current will be very harmful to the battery.

The battery should not be used for too long or the battery will explode.

However, if you are driving through the wilderness and suddenly a component breaks and there is no replacement, you can try connecting the batteries of several cars in series, which can be regarded as a means of self-rescue.

"Come on, how about giving it a try!" It took two hours, and the three bare spears were finally ready. Although they didn't look good, they were powerful enough. As long as they aimed and hit them, Zhang Ke didn't dare to say, with the strength of Chuqiu, he could do it again.

Plus the weight of the drill itself is enough to cut through the coconut shell.

"Hey... bang..." Holding the pewter pole in his hand, Zhang Ke struggled to lift it and shine it on the pickle vat in the corner. Naturally, the spear fell off the vat and shattered.

"Damn it, you can't try anything with it. I'm going to use it to pickle pickles and pickle duck eggs tomorrow. Don't eat it then!" Hong Tao didn't pay attention, and the pickle jar he kept was broken into pieces, which was bigger than his mobile phone.

It still hurts when I step on it.

"Grandpa, this isn't a spear. It should be called Ge, right?" Zhang Ke curled his lips and looked down upon the weapon in his hand. It was powerful enough, but it looked too ugly. The tip of the spear was not pointing forward, but instead

down.

"Nonsense, it all depends on poking. How strong can you be to pierce the skull! Have you studied physics? The zombie doesn't put its head on the wall for you to poke, it is mobile! In early autumn, has the leather armor been sewn...

"

What Hong Tao made is indeed not a spear. It is impossible to penetrate the buffered skull with arm strength alone. If you want to kill with one blow, it is more reliable to smash it down. As long as the gun body is longer than the zombie's arm, you have to hit it one by one when aiming. You want to say that I

If you can't even aim at the head, then giving you a rifle is useless and pure waste.

"Okay, okay, let's try it on!" Taking advantage of Hong Tao's time making weapons, he went to No. 52 Courtyard in early autumn to find two pairs of thick leather boots, and used an awl and tire thread to sew a set for Zhang Ke.

Arm guards and leg guards. Then put on thick clothes, a helmet and goggles. You can probably withstand two bites from zombies.

If no one comes to rescue you after two bites, take the initiative to reach out and let the zombie bite you again. It is much more comfortable than biting your face. At least you are not disfigured, and you have to die with dignity, right?

"Remember, don't be too eager to fight. If you miss, you should retreat quickly. When you run, pay attention to your steps. Don't let the tripping rope trip you. If you can't, run to the car, circle around the car, and take the time to open the door.

Open it. Those guys won't close the car door, so they take advantage of it to stop and smash it again!"

At nine o'clock in the morning, a man, a man, a woman, and a woman, wearing protective gear, leather armor, helmets, and masks, carrying a two-meter-long spear, or Ge, stepped out of the courtyard in a majestic manner.

When passing by No. 52 Courtyard, I went in and searched around to confirm that no zombies had sneaked in. Then I sealed the door with strapping tape to prevent any more zombies from running in. Then I turned into the alley next to it and headed towards No. 56 Courtyard.

Hong Tao still didn't forget his trick along the way, but this time he used telephone poles and walls as anchor points, and laid out three wire ropes starting from the entrance of the alley. After being warned about the precautions, he cut the binding on the door of No. 56 Courtyard.

several straps.

"Bang...bang...bang...click...crack..." In fact, just when the three of them turned into the alley, the zombies in Courtyard No. 56 heard movement or smelled the breath of living people.

.The sun was no longer shining, so he immediately went crazy and banged the courtyard door.

It's a pity that the courtyard doors are pushed inward. They can't pull the door, they can only bang it randomly. When the straps were cut, the courtyard door lacked a fixed point, and the range of movement became wider and wider, and soon one collapsed.

, and also brought down a lot of bricks and stones from the gate tower.

"Let's go! Hey...yeah..." The first zombie died unjustly. It was pushed out by the companions behind it, and its feet were mixed in the threshold.

He fell on the door panel, and his head was cut with two big holes and one small hole by three steel drills. So, you are not afraid of the enemy being powerful, but you are afraid that your teammates will cheat you!

The first blow of the new weapon was both a success and a failure. The success was that Zhang Ke could use it to drill through the zombie's skull. No matter how big or small the hole was, it was a hole. It was a good job if it could destroy the brain. The failure was the goal of the three people.

They all aimed at one, and it was the easiest one to hit. They all had great experience in the project of laziness.

"Don't worry, aim and hit!" Hong Tao didn't have time to direct who hit which head. The white wax pole he used was the longest and the hardest to swing, but the strike distance was the longest. Then don't pick up the ones who fell to the ground.

Just aim at the guy behind you.

Enemies are extremely jealous when they meet! Sangou, you are in my fucking hands. I made you throw garbage bags on the roof of my house! I made you chop cabbage stuffing under the back window of my house in the early morning! I made you stab it

My tire! Today we are settling old and new grudges. Chuqiu and Zhang Ke were swinging up and down, Hong Tao relied on his strength to swing sideways, and from left to right, the three dogs were shining in the face.

"Woo... poof... swish..." The steel drill was so hard that it didn't take much effort to break open Sangou's face, pierce it from the bridge of the nose, penetrate the Tianling cover diagonally, and remove the smaller half of the lid.

His skull was pounding.

It was a coincidence that when the three dogs fell on their backs, the other half of the courtyard door was also collapsed. Without the obstruction of the courtyard door, the zombies immediately filed out, stepping on the corpses of their companions, regardless of what was coming.
Chapter completed!