Wu Yicai walked straight to the square piece of iron, which was covered with green algae and white shells.

And, of course, Wangcai's angry urine......

Wu Yicai roughly observed that this is indeed iron, and it is a gearbox similar to an engine, and there will definitely be a large number of gears, bearings and long shafts in it.

"Hahahaha...... I finally got the iron tool, and it's such a big lump, it's really immortal!"

Wu Yicai looked up to the sky excitedly and roared, because the mouth was very big, and the dry crack on his lips should have been broken open, and it was a little stinging.

But it doesn't matter, he just wants to vent the joy in his heart now!

Now there are iron tools, and there are many parts in them, which can make a lot of weapons, spears, machetes, triangular stabs......

With sharp iron weapons, you can deal with those large predators, pythons and the like can be killed directly with long-handled weapons, and those wolves, wild boars and other things can also be stabbed to death with spears!

Wu Yicai was very excited, pulled up Wangcai on the side, held its front paws with both hands, and forced Wangcai to dance with him.

Wangcai didn't seem to want to share the joy of getting iron with Wu Yicai, a neurotic, and it was moaning to break free from his clutches.

In the end, after Wangcai's slight bite, Wu Yi let it go, but he seemed to have hurt Wangcai a little, and it looked at Wu Yicai's eyes very strangely.

But it doesn't matter, we have to get this big iron shell back now.

Wu Yicai tried to move this iron shell, it is very heavy, about 150 catties, and it will definitely not work to carry it.

He used a rock and a stick to get it back to camp, and the lever worked really well, and it was no trouble to get these big guys.

It took a little effort to open the iron shell, the four bolts fixed on it were rusty, and Wu Yicai did not have a wrench or pliers to unscrew the bolts.

Wu Yicai was thinking that even with tools, it might be difficult to unscrew these bolts, because they had already rusted to death.

Wu Yicai tried to smear some lard and let the bolt soak in oil to lubricate it first, and it made a wrench out of very strong wood.

This wooden wrench was made with a saw, and then it took Wu Yi a little time to disassemble all the four rusty bolts.

There are indeed a lot of gears and round shafts in it, as well as some parts that Wu Yi is more familiar with, valves!

Wu Yicai is a worker engaged in the production of valves, and when he saw the valves, he roughly guessed that this iron shell was a diesel engine, which should be the kind used on fishing boats.

However, the fact that this thing is rusty to this extent means that the fishing boat was shipwrecked a long time ago.

The diesel engine is open, but the parts inside are also rusty, and some of them are very corroded.

But this did not affect Wu Yicai's use in the slightest, he had to make these parts into weapons and tools sooner or later, but making iron tools required fire, it was best to make a kiln first.

The kiln has to be done sooner or later, and Wu Yicai also needs to fire a lot of plates and water tanks and other living utensils.

Now that I can't get help, I just try to make living utensils to make my life better.

Wu Yicai first put a gear in the fire and let it be heated all the time, and when the kiln was finished, he could directly make ironware, without waiting for the ironware to heat up slowly.

The place where the kiln is made should be far away from the sleeping hut, the kiln last time was too close to the sleeping place, so that the heat at night was not good, combined with the experience of the last time, now Wu Yi has chosen a good place.

Next to this place is the tripod smoke room, which is the hut that Wu Yi just started to make, this one is covered by the shade of the trees, and there is no need to bear the scorching sun, even if you do these gravity work, it will not be too hot.

After more than an hour of construction, the kiln was ready, because he had the experience of making a kiln once, Wu Yicai did it quickly and perfectly this time.

Moreover, Wu Yicai also improved the kiln slightly, he installed volcanic stone on the inner wall of the kiln, and the special effect of volcanic stone is to heat evenly and store heat.

The addition of volcanic stone, just like the insulated bricks used in the kiln, can lock in the heat well and save energy.

The kiln is now burning, and most of the soil is drying out and hardening, but it has not yet achieved the effect that Wu Yicai expected, and some parts of it are still very weak.

Especially the round-hole clay board, Wu Yicai was afraid that it was too weak to bear the heavy gear, so he let it burn for a while first, and then put the gears and round shafts that needed to be processed into it.

When Wu Yicai was making the kiln, Wangcai ran back and forth between the camp and the dense forest.

Every time it comes back, it will have a mound egg in its mouth, and it seems that it is also obsessed with this delicacy.

Wu Yicai is very relieved, he will save effort with a small partner like Wangcai, at least he doesn't have to deliberately look for food.

……

Now Wu Yi is ready to build a hammer, and only with a son will there be the next step to build the work.

It is no stranger to building Wu Yicai, it has loved swords since he was a child, and he once forged his own swords when he was a child, but at that time, it was not made in a regular manner, and there was no perfect process, so it failed.

However, after Wu Yicai joined the work, he also learned some basic processes of high-frequency quenching in the factory during his nine years, such as carburizing, quenching, tempering and other heat treatments.

Wu Yicai came to the fire and checked the gears in the fire, now the gears have been burned red, and now they can be used to build things.

The general gears are subjected to high-frequency quenching of carburized roots, which will increase the hardness of the gears and thus increase the service life.

The hardness of the gear is about 20° before high-frequency treatment, and the hardness after high-frequency treatment is between 40°~50 degrees.

The metal with high hardness will be burned red in the fire, which will remove the hardness brought by the carburizing layer, reduce the hardness of the metal, and improve the softness of the metal, so as to carry out better processing.

Putting the metal in the fire and burning it red is called annealing by its scientific name......

Fortunately, Wu Yicai deliberately studied heat treatment in the factory where he worked, otherwise he wouldn't know these details at all.

Wu Yicai used a round shaft to take out the gears and build an anvil, which he did not have ready-made, but could replace it with the iron shell of a diesel engine.

Although this iron shell is severely corroded and rusty, its thickness is still there, its inner wall is 3 cm thick, and the surface is also very flat, which can be used as an anvil!

Wu Yicai put a round shaft in the inner hole of the gear, so that the hole would be kept when hammered to make it.

Although the hole and the round shaft will be inlaid together, under the principle of thermal expansion and cold contraction, there will also be a gap between the inner hole of the gear and the round shaft, and the round shaft can be knocked out at that time.

In this way, the inner hole of the gear can be perfectly retained, and the wooden rod can be stuffed into the inner hole after the hammer is made, and a hammer can be made with little effort.

Wu Yicai found a stout round shaft to temporarily act as a hammer, although it would shake his arm numb when he hit the gear, but the shape of the gear was changing.

Just when Wu Yi was making the hammer, he seemed to hear Wangcai's low voice.

"Woo ......"

There was a low cry in the jungle, and it was painful, like a suffocating sound, it was supposed to be Wangcai's voice.

Wu Yicai subconsciously learned that Wangcai was in trouble!