How to rub to make a fire, how to rub to make a fire

How to drill wood for fire? Drilling wood for fire is generated according to the principle of friction heat, which will produce a lot of heat when rubbing, and the wood itself has a relatively low ignition point, so it will emit fire. Drilling wood for fire originated in China.

When drilling wood, put flammable materials such as dead grass at the front end of the wood, and when the friction produces a certain heat, there is light smoke, and if you carefully blow the air at the place where the smoke rises, the flammable material may start a fire.

The first type: the classical method of drilling wood for fireThis is the most widely understood, but at the same time the most difficult method.

First of all, find the right wood for drill boards, dried aspen, willow, etc. will be a good choice because of their softer texture. Then find a suitable branch to make a drill bit, which is relatively hard, and the conditions are not as harsh as the drill plate. Then, drill the edge of the drill plate into a small inverted "V" shaped groove.

Finally, put a flammable velvet or dead leaf under the drill plate and drill vigorously with both hands until the fire is drilled.

The second type: the other steps of the two-person classic drilling method are the same as the first method, but this time it is a two-person cooperation.

One person fastens the drill shaft to the drill plate with a grooved wooden cover, and the other person wraps the drill shaft several times with a rope or rattan with more friction and then pulls it back and forth quickly. This two-player collaboration is much more efficient than the first one.

The third method: the simple planer fire method digs a long groove in the soft wood board, places flammable velvet in front of the groove, and pushes it forward with a hardwood strip until the spark ignites the velvet.

Fourth: Iroquois fire-taking methodThis device invented by the Iroquois is quite efficient. One end of the drill shaft is wound with two ropes, and the other end of the rope is fixed to a rigid transverse plate. A hardwood wheel is used as an accelerator in the middle of the drill shaft.

When the rope is wound and pressed down on the transverse plate, the drill shaft can be rotated extremely fast and sparks will be drilled.

The fifth: The bowstring drilling method is similar to the second double drilling method, except that it can be done by one person. The drill shaft is likewise covered with a fluted lid and then pulled quickly with a bowstring-like tool.

Sixth: The classic fire retention method of the cave age, whether it is using drilling wood to make fire or any other method, requires an appropriate medium to cooperate with the combustion of fire. When the surrounding environment is very humid, it is difficult for the general material to ignite.

Coiled into the shape of a bird's nest with dry materials, hollowed out in the middle, kept as soft as possible, and then padded with a layer of velvet. This allows it to ignite even in wet weather. See.

It can be but it takes a lot of toughness and stamina, and I think if you don't get annoyed, the bet with you will be annoyed and walk away.

Without further ado, let's talk about my understanding of how to drill wood to make fire.

Start by choosing a sunny day, preferably in the afternoon when it's hottest. Find two very dry pieces of wood, flatten one and dig a small groove in the middle to put some sawdust in it, and sharpen the other into a cylinder with a lower part sharpened. Then you can drill wood on it to make a fire, just be careful not to hurt your hands and prevent fire.

Don't be in a hurry, or you'll fail. Note: Sometimes maintaining the high speed rotation of the log strips is also the difference between success and failure.

Drilling wood for fire is not just any wood, it is best to use pine, which has high friction and pine oil can support combustion

1. Friction makes the object electrified, so that there is an electric field, there is a voltage, and when the voltage is very high, it will break through the air and produce sparks. However, because this discharge is instantaneous, the current is short-lived, and it will not cause harm to the human body. Steel rubs against a hard object, and the heat generated by the friction ignites a spark from the iron powder (dark red without forks) or the carbon in the iron produces a spark (white light fork).

This is a common frictional spark.

2. Friction produces static electricity, which penetrates the air, resulting in the electron transition on the surface of the gas molecule accompanied by the generation of photons, which looks like a spark.

3. Friction generates heat, resulting in the electronic transition of the molecular surface layer of the friction site with the lack of spring with the production of photons, which looks like a spark.

Drilling wood for fire is an example of friction fire. The work done by the friction of an object produces heat, and the mode of heat conduction is from high temperature to low temperature. Therefore, when the temperature of the object is greater than the temperature of the air, it will be emitted into the air by heat conduction.

If the speed at which friction produces heat is greater than the speed of heat dissipation, then the object will get hotter and hotter. It is not until the temperature reaches the ignition point of the object that it catches fire. This is also known as friction to start a fire.

Frictional force does work, w=fs. Then the work heat is converted, q=w, which causes the object to heat up δt=q cm, and c is the specific heat. Of course, due to the different types of friction objects, the specific heat capacity may also be different, if two objects with different specific heat are rubbed, then δt=q (C1m1+C2M2).

Then, when the temperature is higher than the ignition point of one of the objects, a chemical reaction (redox) occurs when there is sufficient oxygen, and the mountain is burned.

In fact, from a microscopic point of view, friction does work, that is, the work is converted into the internal energy of the object, in the case of the limb state of the object does not change, the increase of internal energy is mainly reflected in the increase of the average kinetic energy of the molecule, and the macroscopic embodiment of the average kinetic energy of the molecule is the temperature.

Of course, for some objects that may involve changes in the state of matter when they are rubbed, the bridge heat vaporizes the object, and then ignites the vaporized molecules; Or friction produces small chips, which have an effect similar to the vaporized molecules of an object, and can also be ignited by the heat rise generated by friction.