Moisture content (MC) in wood refers to the amount of water present within the wood fibers relative to the dry weight of the wood. It is typically expressed as a percentage.
The ideal moisture content for wood before turning varies depending on the specific wood species and the intended use of the turned object.
* **General Guideline:** For most wood species, a moisture content between 6% and 12% is considered suitable for turning.
* **Lower Moisture Content:** Lower moisture contents, such as 6-8%, may be ideal for projects that require dimensional stability and resistance to warping or cracking.
* **Higher Moisture Content:** Higher moisture contents, such as 10-12%, may be acceptable for projects where some flexibility or moisture absorption is desired, such as bowls or other curved objects.
* **Too High Moisture Content:** Wood with a moisture content above the recommended range may be more prone to warping, cracking, and decay.
* **Too Low Moisture Content:** Wood with a moisture content below the recommended range may be more brittle and susceptible to breakage during turning.
Using a moisture meter is the most accurate way to measure the moisture content of wood. These meters use electrical resistance or other methods to determine the water content in the wood.
Moisture mapping involves measuring the moisture content of wood at different locations within a piece or batch of wood. This process helps identify areas with high or low moisture content, ensuring that the wood is properly seasoned and suitable for turning.