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One of the downsides of working with wood is that it has the ability to absorb and release moisture, which means the wood can expand and contract. This can, and does, create major problems with some woodworking projects ... but there are ways to help reduce some of the challenges. The first thing we need to do is work with wood where we know what the moisture content of the wood is to begin with.
Watch it on Youtube: https://youtu.be/lGPzYe0Ub7A
For many woodworking projects, a general rule of thumb is to only use wood with a moisture content around 9 %. This can vary depending on climatic conditions, but it's at least a good starting point. It is not unusual for freshly cut trees to have a moisture content in excess of 35%, so there is a LOT of water in the trees that need to be evaporated out, which in turn makes the wood we work with much more stable. It will still absorb and release moisture, but by the time it gets down to 9% these changes should be much more subtle.