Moisture Mapping A Guide to Wood Moisture Content and Seasoning

Wood Moisture Content

Moisture content refers to the amount of water present in wood. It is expressed as a percentage of the oven-dry weight of the wood. Understanding wood moisture content is crucial for various woodworking processes, including drying, machining, and finishing.

How Dry Should Wood be Before Turning?

When turning wood, the moisture content should be between 6% and 8%. This range ensures that the wood is stable and less likely to warp or crack during the turning process. Wood with higher moisture content can be difficult to work with, and it may not produce a smooth finish.

Determining Wood Moisture Content

Several methods can be used to determine the moisture content of wood. One common method is to use a moisture meter. Moisture meters are available in various types, each with its advantages and disadvantages.

Seasoning Wood

If the wood you wish to turn has a moisture content higher than 6-8%, it will need to be seasoned. Seasoning is the process of drying wood to reduce its moisture content. There are two main methods of seasoning wood:

  • Air drying: This is the most common method of seasoning wood. It involves stacking the wood in a well-ventilated area and allowing it to dry naturally.
  • Kiln drying: This is a more accelerated method of seasoning wood. It involves placing the wood in a kiln and exposing it to controlled heat and humidity.

Proper seasoning is essential for ensuring that wood is stable and less likely to warp or crack. It also helps to improve the wood’s strength and durability.