Before we move on to wood preservation methods, we must know the basic principles of wood preservation.

The following are the basic principles of preserving wood:

• Preservatives must remain resistant in case of discoloration
• In curing, the wood must be exposed evenly on the entire plane of the wood
• If there is penetration and retention, try to get the preservative in and evenly distributed as much as possible in the wood.
• Time and method taken into account
• Knowing the type of wood before curing such as water content, and other substances in the wood.
• The wooden tools used are stable and suitable

 

After knowing the principle of wood preservation, we will discuss the methods of wood preservation, here are the methods of wood preservation:

1. Immersion Method

This method is done by immersing the wood in a container containing a preservative solution of course which has determined the concentration between the preservative and the solution. The wooden part must be completely submerged and not allowed to be lifted or floated at all. With that we have to give it a ballast so that the wood does not lift. There are 2 kinds of immersion, namely hot bath and cold soak.

The soaking process has drawbacks, namely it takes a long time, and requires extra energy because it is not simple, especially for preserving wet wood, the equipment used is also easily exposed to rust, in hot soaking there will be fires in the wood if you are not careful.

The advantages of this method are that the solution can be used repeatedly, the penetration and retention are quite satisfactory and can contain more wood for preservation.

2. Dyeing Method

The dyeing method is a method in which the wood is immersed for a few minutes, of course it is immersed in a dyeing place where the concentration of the preservative has been determined. The weakness of this method is that the penetration and retention of preservatives is not satisfactory, it can only coat the wood thinly. In this method usually used wood that has been dried only to prevent the presence of blue mold on the wood. The advantage of using this method is that it takes a short time to do it.

3. Smearing Method

This method is carried out for temporary preservation which aims to kill fungi and destroying insects on wood, this preservation is better done when the wood destroyer attack is not severe and vicious, the drawback of this method is that it cannot optimally resist the attack of wood destroyers that will take time. come so that it will continuously do the staining. The advantage is that if there are gaps or cracks in the wood, preservatives can penetrate deeper into certain wood pores.

4. Bandaging Method

This method usually uses a preservative in the form of a concentrated liquid which is then applied to the surface of the wood that is still wet, then it can be wrapped in the wood. The disadvantage of this method is that it requires deep precision and diligence, the advantages of which can create slow diffusion in the wood.

5. Vacuum Press Method

In the vacuum press method there are 2 processes, namely the full cell process and the empty cell process.

 

If the cell is full, the preservatives used can fill all the elements in the wood cell, but if the cell is empty, it only fills the space between the cells in the wood.