Chapter 693 Glue
In the open space, the sound of hammering and banging could be heard constantly.
Bifang sat on a small stool, inserted a palm-length wooden wedge into the groove, and knocked it with a forearm-length stone hammer to hammer it in.
As the wooden strips are stacked and fixed one by one, the shape of the sled has basically taken shape. Just from its appearance, you can tell that this will be a dog sled with very good functions.
In the forest not far away, three idiots were sitting in a row, lying on the ground and whimpering sadly. They watched the sled taking shape but did not dare to get close. Somewhere in their hearts, they felt a great terror, and this terror was about to befall the dog's head that had gone completely crazy this week.
Bifang didn't know why the three big stupid dogs were sitting there staring at him so early in the morning, but this didn't affect his work. While he was chewing a chew stick in his mouth to clean his teeth, he knocked the stone hammer down hard and continued with the work in his hands.
Although it was a bit rough and the wooden wedge was not exactly the right size, it firmly fixed the two long curved logs together, and they would never separate unless the wedge was pulled out or the material structure broke.
It was just a little off in size. The width was just right, but the length was a little short and a little loose, so Bifang inserted a piece of wood as a pad, and then applied resin glue on it.
Resin glue is a very effective waterproof glue, which is mainly extracted from pine trees, such as pine and spruce. They are also tree species that can be found in cold areas, and there are many of them in the forest.
"The resin will come out from 'wounds' on the trunk, or it will be stored in bumps under the bark, so you can just use a stick to remove the resin."
Bifang explained it once when he went to cut the resin yesterday, but in order to avoid uninformed viewers, he repeated it again.
The live broadcast audience comes from all over the country. Due to the time difference and Bifang's current disordered biological clock, some viewers will inevitably miss some of the content.
Judging from the twelve-hour dividing line, there are only 10% overlapping viewers in the live broadcast room, which means that the remaining 90% of people may not have heard the previous content and can only understand it through barrage.
Big events are fine as they can be replayed in time, but this may not be the case for some small knowledge points. Bifang can be used to kill time and increase the fun.
It just so happened that the resin glue collected and made the day before yesterday was almost used up, so I made a new batch.
“We put the collected resin in containers and burn them on fire.”
In the small fire pit, the resin glue is being slowly heated.
"When the resin starts to melt, you will smell a strong pine oil smell, this is normal, don't worry. It is important to be careful not to heat the resin too high to avoid boiling it, which will weaken the adhesive of the resin glue."
"Also make sure you have a lid handy, because the resin can easily catch fire. Once it catches fire, immediately cover the container with the lid to prevent the resin from burning. If... Whew!"
Bifang was about to speak when he saw from the corner of his eye that the firewood crackled with a sound, and the sparks fell into the container, followed by a ball of flame that burst out from the wooden bowl. Fortunately, he was quick to close the lid as soon as it started to burn, otherwise he would have almost singed his eyebrows.
[Good guy, burn it as soon as you say it]
[It’s burning so hard, it’s burning fiercely]
[Be careful]
After covering the wooden lid to isolate the oxygen for a minute, Bifang opened it again and continued.
"Where were we just talking about? Oh, if you have a large amount of resin and need to get very pure resin glue, you can filter the liquid resin glue. Act quickly, otherwise the resin glue may solidify."
"After the resin cools, it will return to its previous natural state. So in order to make the resin glue harder and stronger, it is necessary to add a 'modifier' to it."
"Generally speaking, there are three additives that are easily obtained from nature, and each of these three substances has its own advantages. Crushed charcoal is the most commonly used additive because it is the easiest to obtain. In most cases, adding charcoal is acceptable, although this resin is relatively brittle after drying."
"The second is beeswax. Adding beeswax can make the resin glue more flexible, but this resin glue is not strong enough, it feels greasy, and it will be soft after forming."
"The last one is feces. It must be feces of herbivores, such as rabbits and deer. Their dried feces are the best additive. This kind of resin glue is the strongest and most durable, but it is not hygienic enough, so don't use it to stick cups and other utensils."
Bifang chose to add charcoal, add crushed charcoal to the constantly stirring resin, and then stir it thoroughly.
[Wow, even feces is okay? ]
[It’s a bit outrageous]
[Let me guess. It's a blend of fibers, plus some other special ingredients?]
"It's difficult to determine how much blending agent to add to make resin glue. Generally, we add it at a ratio of 1:10, and then take a little out to shape it. If it is hard after shaping, it means it is enough."
"If it's still soft and sticky, continue to add the blending agent. After adding the blending agent, the resin glue must be used immediately while it is hot because it will set once it cools."
"It's best to divide the resin into several portions and use only a portion each time, because the more times the resin is reheated, the weaker it becomes."
"It's also very simple to divide it into small portions . Just stick a little on it with a stick, put it in water to cool it down, and then peel it off. Of course, in the Arctic, air cooling is enough."
Bifang rolled out the sticky resin film and applied it directly to the joints of the sled. After scraping it evenly with bark, he immediately wrapped it with a long rope made of soaked bark and reinforced it three times.
"I originally wanted to use leather glue. This is the best glue for bonding organic materials. Although it has its disadvantages, that is, it will stretch when it comes into contact with water, it cannot withstand heat, and it cannot bond with materials such as stone, but it is indeed effective for wood, but leather glue..."
Bifang scratched his head and spread his hands: "As the name suggests, this thing is made from raw hides. I don't have any raw hides, only a piece of cooked musk ox hide. Even if it were raw hides, I wouldn't want to give up my plush sleeping bag."
[No, actually, Fangshen, you have rawhide, lots of it.]
"Um?"
Bifang was stunned. He had raw hides?
[Lao Fang, look to your left, you will understand]
Bifang looked to his left in confusion, and saw the three idiots sitting in a row, close together.
For some reason, when they saw Bifang's gaze, the three idiots tucked their tails under their butts and stuck out their tongues in a flattering manner.
…
[Fuck, you have a really big imagination! ]
【Three idiots: How did we offend you? 】
[If the wall doesn’t obey you, then you will obey me]
"Ahem, they still need to pull the sled, so let's just let them go."
