2.3. Types of Seasoning

• Wood is stacked in a well-ventilated area protected from direct sun and rain.
• Wood pieces are spaced for free air circulation.
• Takes several months to over a year depending on wood species and local climate.
• Economical but slow and less uniform.

Natural seasoning, also known as air seasoning, involves stacking wood in a space where air flows freely while protecting it from direct sunlight and rain. The primary objective is to allow moisture to evaporate slowly, which happens naturally over time. This method can take a long time, sometimes from several months to over a year, depending on factors like the type of wood and weather conditions. While it is cost-effective, the results can be inconsistent because the drying rate varies based on the surrounding environment and conditions.

Think of natural seasoning like drying clothes on a clothesline outside. If the weather is warm and breezy, the clothes will dry faster. In contrast, if it's cold or still outside, it might take longer. Just like that, the type of wood and the climate influence how quickly it dries during the natural seasoning process.

Faster and more controlled method using external means.

a. Kiln Seasoning

• Wood is placed in a kiln chamber with regulated temperature and humidity.
• Involves drying schedules depending on species and thickness.
• Yields well-seasoned wood in days or weeks.

b. Boiling or Water Seasoning

• Logs are immersed in hot water or steamed to remove sap.
• Followed by air drying.
• Effective for certain hardwoods.

c. Chemical Seasoning

• Salts or chemicals like urea, sodium chloride, or boric acid used.
• Speeds up moisture removal.
• Reduces fungal and insect attacks.

d. Electrical or Microwave Seasoning

• High-frequency electric or microwave waves used to heat the moisture internally.
• Rapid but expensive; used for valuable timber.

Artificial seasoning is designed to speed up the drying process of wood using controlled conditions. There are several methods within artificial seasoning:

• Kiln Seasoning: This method involves placing the wood in a kiln, where the temperature and humidity are carefully regulated. This allows for a much faster drying process—sometimes just days or weeks—resulting in well-seasoned wood. The drying schedule is typically customized based on the wood species and its thickness.

• Boiling or Water Seasoning: In this technique, logs are boiled or steamed to eliminate sap and then allowed to air dry afterward. This method is effective for specific types of hardwoods, helping to prepare them for further use.

• Chemical Seasoning: Chemicals such as salts or urea are applied to the wood to help draw moisture out more quickly. This method is not only faster but also minimizes the risk of fungus and insect damage.

• Electrical or Microwave Seasoning: This advanced method uses electric or microwave energy to heat the moisture within the wood, allowing it to escape quickly. While this is an efficient method, it's generally considered expensive and is mostly used for high-quality timber.

Imagine putting a wet sponge in the microwave. Just like how the heat makes the water evaporate quickly, artificial seasoning speeds up the drying process of wood using various techniques. Each technique acts like a different microwave setting tailored to achieve the best results for different types of wood, similar to how you would adjust the microwave for a potato versus a marshmallow.

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