The wet stick itself has moisture, and the stick has layers according to the different annual rings, and the annual rings of each layer are different, so its wood density is different, and the fiber and moisture contained in different wood densities will be different. In the process of back baking, water will evaporate slowly when heated, but the water lost or taken away by different layers of wood is different. If there is more water loss, there will be room for wood fiber, because without sufficient water, the fiber layer or fiber molecular chain will partially shrink, or the part with more water loss will shrink faster than the part with slower water loss. Therefore, using this principle, the stick can be straightened or bent during fire roasting.

The role of fire roasting:

Many people may have tried to change the shape of wooden sticks directly with external force, instead of roasting them with fire, and both of them are used at the same time. Obviously, the effect will be better if external force, fire roasting or additives are added. The main function of fire roasting is to evaporate the water in the stick, destroy some joints of the stick or the structure of some macromolecular chains of the stick, and make the stick permanently or maximally deformed, which is convenient for people to use.

Method for straighten wet wooden sticks by fire roast

Keep moisture and bake:

First of all, you have to think that the stick has moisture or keeps moisture. It is impossible to bake directly without water. If it is not good, it will be burned. Keep moisture and bake with fire, the moisture will evaporate, so the stick will be slightly deformed with the degree of moisture evaporation. In the process of baking with fire, you can also immerse yourself in water and pick it up before baking.

Reverse force:

It is not enough to bake with fire, but also with the help of external forces. Fire roasting only makes the stick have a certain deformation trend, rather than straightening and bending directly. When roasting with fire, use external force to face its shape direction, while roasting, slowly bend to the stressed direction until the wet stick feels "soft".

Plane pressure of heavy objects:

After being softened by fire, borrow some heavy objects, such as slate, cement board or stone. Hold the straightened stick down and keep it straight, preferably with a slight bend in the direction. This can alleviate the crawling recovery after contact with heavy objects is suppressed.

Soak weak acid:

Some weakly acidic liquids can be leached in the fire when you bake or flatten after the exam. Acidic liquid can dissolve some gel substances, which is beneficial to destroy the structure of some sticks and produce permanent deformation or greater structural deformation. (You can use it if you have it, or you can use it if you don't)