What Is Kiln Drying? The Reasoning Behind Drying Wood

The conventional wisdom is you cannot use a home dehumidifier to dry wood, especially with acidic woods such as oak that will corrode the coils. But at this stage of the drying, there is very little moisture to remove and the exposure is minimal. I would recommend bringing the drain hose out of the box and have it empty into a bucket so the water flow can be monitored. You can also use a hand-held moisture meter such as the Lignomat with remote probes connected to cables, so you can check the moisture content of various boards deep in the pile from outside the kiln. In regions with some kind of a heating climate , wood needs to have a 7% to 9% moisture content to prevent projects from warping and cracking during the driest part of the heating season.

  • Originally, predryers were used in areas where the normal air-drying season was fairly short, but their use has spread to other areas of the country.
  • If you happen to have access a kiln, and the pieces of wood you want to dry are not too large, by all means, go ahead, and kiln dry it.
  • If your stack is outside, it needs a roof to keep out damaging direct sunlight and rain.
  • Further moisture reduction occurs when you move the boards indoors where they’ll eventually reach their equilibrium moisture content .
  • Let’s now go over some other tips on how you can speed up the process of drying wood for woodworking.

For pin-type moisture meters, press the 2 tips into the wood and activate it for the moisture reading. For pinless meters, press the base https://bestwoodcarvingtool.com/drying-wood/ of its scanning plate against the wood and turn the meter on. Record the moisture content, which will be a percentage between 0 and 100.

Drying Wood At Home

There you have it, folks, some solid tips, and methods for dry wood fast for woodworking. Just remember, whatever you do, make sure the wood has less than 7% moisture contained in it. If you have no other choice but to dry your wood outdoors, you do want to choose a good place to do it. Your wood will dry many times faster if it is exposed to lots of sunlight every day. Even the heat from your home, if connected to the garage, will help speed up the drying process. At the very least, having your drying stack indoors will help keep it out of the rain.

drying wood

If you happen to have access a kiln, and the pieces of wood you want to dry are not too large, by all means, go ahead, and kiln dry it. You’ll go from having wet to dry wood in a couple of hours completely. Kiln dried wood is a drying process that is far more efficient than air-drying lumber as you can control both the temperature and humidity, while even regulating steam levels.

Heating With Wood

According to some studies, it appears that all phenols are not removed, but they will migrate within the lumber during kiln drying. I recently purchased a slab of black walnut (2” thick) https://bestwoodcarvingtool.com/ that I intended to use for kitchen shelving. For such a small project I’m ok with minor cracks or warps over the years, but would prefer to avoid major changes in the shelves.

SSV run at partial atmospheres (typically around 1/3 of full atmospheric pressure) in a hybrid of vacuum and conventional kiln technology . Since the seasoning of the wood takes 6 months at least, but kiln drying method season the wood rather quickly that can be enjoyed for years. In the kiln drying process, the wood is dried in an oven for a set period of time so that you can have the desired moisture content in the wood. Sticker spacing varies depending on the species and thickness of the lumber being dried; a conservative spacing scheme would be every 12”, though usually 16” or 24” spacing can be safely used on thicker pieces.

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