To tell the truth, Ding Hao did think about whether to swim over when he heard that the bridge was broken, but now it seems that he is fortunate to just think about it, and it will be miserable if he really takes action.

After packing up the loot, Ding Hao and Althea returned to the lumberyard and prepared to take the car back to Night Town. However, the weather was not beautiful, and when the two of them walked back, it began to rain lightly, and when they arrived at the lumberyard, it was already a raging storm, and they couldn't even see the road clearly.

"I think it's better not to run around in the wild in this weather." Looking at the pouring rain outside, Althea suggested to Ding Hao. "Heavy rain can muddy roads and make mutant creatures restless, so let's wait at the lumberyard until the rain stops."

"It's a great idea." Ding Hao nodded, "I hope the roof here won't leak." ”

In addition to Ding Hao and Althea, there is also a middle-aged man named Frank in the lumberyard. Frank has a younger brother named Frankie, the same guy who burned himself yesterday after getting drunk, so Frank is here to replace his younger brother today.

But the problem is that when Ding Hao and Althea returned to the lumber yard before, this Frank was already drunk.

"Do you have any thoughts on your brother getting drunk and almost burning himself?" Looking at Frank, who was full of alcohol, Ding Hao walked over and asked.

"My brother...... Hiccup! The drunken Frank burped, "He just ...... Bad luck...... Hiccup! I've ...... Put all ...... Oil lamp...... It's all hanging, absolutely ...... There will be no accidents...... Hiccup! ”

Hearing Frank say this, Ding Hao looked up and found that this guy really hung all the oil lamps on the wall, and he couldn't reach it without standing on the ladder, let alone be easily knocked over.

Looks like a great solution.

"Uncle Frank, I've roasted some spider meat, would you like to eat some?" After a while, Althea came over with a plate of roasted meat, and the golden brown spider meat emitted an enticing aroma.

"I ...... Not hungry...... You guys...... Let's eat...... Hiccup! Frank waved his hand, and then continued to drink, like a strong man who had died drunk on the battlefield.

"This guy is hopeless." Ding Hao picked up a piece of spider meat and threw it into his mouth, the entrance was delicious, and it did taste like crab meat.

"Actually, Uncle Frank is a good man, but he is as addicted to alcohol as his brother." Althea was also eating spider meat, "By the way, do you want some wine?" I remember Uncle Frank and his brother probably kept a lot of rum in the lumberyard. ”

"No, I don't drink." Ding Hao refused.

"It's okay not to drink, you won't make a mistake." Althea swallowed the last piece of spider meat, "The hut south of the lumberyard is the rest room, if you are tired, you can go and rest, and I will help you make the spider rope." ”

"Let's go together." Ding Hao wiped his oily lips, "It just so happens that I also want to make some equipment." ”

Althea took Ding Hao to the studio north of the lumberyard, which had all kinds of tools and even a lathe.

"This lathe is assembled by us using all kinds of waste parts, don't look at the worn-out materials, the accuracy is still quite high." Althea touched the lathe placed in the corner and said to Ding Hao with some pride, "And we found an interesting plant in the forest, which can use its sap instead of gasoline to fuel the generator." ”

"Give me the silk glands of the spindle spider." Althea stretched out her hand to Ding Hao.

Ding Hao took out all the six silk glands in the backpack, because when he fought with the spindle spider before, he was all in the abdomen, so the only complete silk glands collected were these six.

Althea took the silk gland, took out a wooden stick and fixed it on the shaft of the lathe, then picked out the spider silk and glued it to the wooden stick, and then started the lathe to rotate at the minimum speed, and the slender spider silk was pulled out of the silk gland little by little, and soon a spindle was formed on the shaft.

After draining a piece of spider silk, Althea removed the stick from the lathe and threw it into a vat filled with purple-black liquid.

"This is the juice of the purple light fruit, the spider silk of the spindle spider is easy to be cut or grinded, and the practicality is not high, but after soaking it in this liquid, it will permanently improve the toughness of the spider silk and make it more durable." Althea gave Ding Hao a brief explanation, "But it's still not fireproof, it will break as soon as it burns, and it will be cut off with a little force if you use a knife." ”

The spindle spider silk needs to be soaked for an hour, and after soaking, it will be woven into ropes, and before that, Ding Hao can use the lathe to make what he wants—wide-headed climbing arrows.

To put it simply, this is a kind of heavy arrow with a wide arrow, the wide arrow can make it difficult to pull out when it is shot into a soft object, and the large dead weight can make it fly with the rope for a long distance and still have enough kinetic energy to shoot deep into the object.

Because it needs to support the weight of a whole person, the wide-headed climbing arrow cannot be made of wood. Polymers are the most ideal material, but if you don't have them, you have to use metal.

Ding Hao searched for the metal materials in the interface space, and then took out a duralumin bar that he found in Seattle. Duralumin has good mechanical properties, high strength and easy processing, and low density, can be used as a lightweight structural material, quite suitable for making wide-headed climbing arrows.

This duralumin strip is about three fingers wide and more than one meter long, Ding Hao first used a carbon pen to divide the duralumin strip vertically into three parts, and then sawed the duralumin strip along the drawn line, and then sawed off the three aluminum rods from it, so that Ding Hao had six aluminum rods about 60 centimeters long in his hands.

After removing the two somewhat twisted aluminum sticks, Ding Hao put the remaining four on the lathe and cut them into slender round sticks with a diameter of 10mm one by one. The aluminium rod has a thread carved out of one end, a V-shaped depression cut out of the other, and a hole drilled.

Putting the prepared arrow shaft aside, Ding Hao took out some steel plates from his backpack to make arrowheads. The shape of the arrowhead is very important, and it is useless if it cannot be firmly attached to the target.

Ding Hao took out a pen and paper and began to design the arrow, first of all, the general shape is V-shaped, so that when encountering materials that are difficult to shoot into, such as rocks or steel plates, you can hook them with the corners on both sides. The blades on both sides of the arrow should also have backward barbs, so that it is not easy to pull out when shot into an object such as cork, Ding Hao can not climb halfway down a tree or climb a cliff or something like that, the arrow is released, then it will really hell.

In addition, the fixed effect of the arrow of the monolith may not be ideal, so it is necessary to have another piece of arrow to form a cross structure, then it is necessary to play like a child to play the assembly card, an arrow from the beginning to the back of a gap, an arrow from the back to the front of a gap, so that the two arrows can be combined with each other.

Ding Hao first used a lathe to cut out the V-shaped metal sheet that met the requirements, cut the gap, and drilled out the socket for assembling the arrow shaft, and cut out the barbs on both sides of the arrow blade, and used a grinding wheel to make it thinner.

After making sure that the two arrows could be combined very smoothly, Ding Hao put them into the furnace and heated them to 1100 °C, that is, when the whole was golden brown, they were taken out of the furnace and quenched in engine oil.

"You can forge?" Looking at Ding Hao's skillful movements, Althea, who was weaving spider silk ropes on the side, asked curiously.

"A little." Ding Hao smiled slightly.

Take the quenched arrows out of the oil, clean them with rainwater, and then take them to the grinder for polishing and cutting the edges. The processed arrows shimmered cold, enough to shave off the leg hair. Ding Hao combined the two arrows together, then welded each other, and finally used a grinding rod to polish the welded part more smoothly, and the arrow of the wide-headed climbing arrow was ready.

Looking at the cold light shining and extremely sharp arrows, Ding Hao felt that this thing could not only be used as a climbing tool, but also as a weapon.

Attach the shaft of the arrow, glue the tail feathers, and a wide-headed climbing arrow is ready, while Althea is still weaving the rope of spider silk.

Ding Hao continued to make another wide-headed climbing arrow, and when all four arrows were ready, Althea finally braided the rope.

"The rope is ready, it's 100 meters long." Althea handed Ding Hao a neatly wound purple-black rope, the rope was about 3mm in diameter, very light, and almost weightless in his hand.

"Thank you." Ding Hao took the rope, knotted the two ends of the rope separately, and then fixed it with iron sheets, and installed a small hook, which could hang the rope on the small hole at the end of the wide-headed climbing arrow, or fix it on other climbing tools.

Ding Hao took out the super blade and tried it, and it felt very good, with an effective range of at least 120 meters.

"It's finally done." Althea yawned and stretched, "I'm sleepy, it should be midnight now, let's go rest." ”

"Well, I'll pack my things." Ding Hao began to take back the tools he used, carbon pens, rulers, and papers, all of which Ding Hao had found with great difficulty from the garbage heap.

However, just as Ding Hao was sorting out his belongings, the lights in the room suddenly went out, and in the face of this sudden situation, Ding Hao and Altea looked at each other in the dark.

"Tripped?" Ding Hao asked.

"I don't know, but I think it's best to fix the circuit quickly." Althea's voice was a little panicked, "The electric light here is connected to the ultraviolet light on the outer wall, without the ultraviolet light, the mutated creatures in the forest will come at any time." ”