Moisture mapping is a technique used to determine the moisture content of wood. This is important for several reasons, including:

– **Preventing wood movement:** When wood dries, it shrinks. If wood is not evenly dried, it can cause the wood to warp or crack.

– **Improving the quality of the finish:** A properly dried piece of wood will take a finish more evenly and smoothly.

– **Preventing rot and decay:** Wood that is too moist is more likely to rot and decay.

The moisture content of wood is measured as a percentage of the oven-dry weight. The oven-dry weight is the weight of the wood after it has been dried in an oven at 105°C (221°F) until it no longer loses weight.

The ideal moisture content for wood varies depending on the intended use of the wood. For example, wood that is going to be used for indoor furniture should have a moisture content of between 6% and 8%. Wood that is going to be used outdoors should have a moisture content of between 12% and 15%.

**How dry should wood be before turning?**

The ideal moisture content for wood before turning is between 6% and 10%. This moisture content will help to prevent the wood from cracking or warping while turning.

To determine the moisture content of wood, you can use a moisture meter. Moisture meters are available at most hardware stores.

Once you have determined the moisture content of the wood, you can dry the wood if necessary. There are several ways to dry wood, including:

– **Air drying:** This is the most common way to dry wood. Simply stack the wood in a well-ventilated area and allow it to dry naturally.

– **Kiln drying:** This is a faster way to dry wood, but it can be more expensive. Kilns use heat and humidity to dry wood.

– **Microwave drying:** This is a quick and easy way to dry small pieces of wood. Simply place the wood in a microwave-safe container and heat it on high for 2-3 minutes.

Once the wood has reached the desired moisture content, you can begin turning it.