Can you dry out wood in the oven? The short answer is “yes,” but there are quite a few factors to consider – not just for your safety, but for conserving energy and ensuring that the wood you dry in the oven emerges well-suited for its intended use. This useful how-to guide covers drying firewood in the oven, as well as how to quickly oven dry wood for small building projects.
How to Dry Wood Using a Kitchen Oven: Get Firewood Ready Faster
On its face, the idea of oven drying wood at home might seem a touch ridiculous, and maybe even a bit dangerous. But if you live in a cold climate and have a fireplace or woodstove as your primary or secondary heat source, you can prep at least some of your firewood in your kitchen’s oven. This method isn’t meant to season an entire shed full of firewood, but it’s a good answer to the occasional damp log or under-seasoned kindling.
What temperature is best for drying firewood in the oven? This is tricky. You want your wood to dry quickly, but you don’t want to risk starting a fire. For this reason, the oven should be set at around 300 degrees Fahrenheit. You can choose a lower temperature if you’re drying small pieces of kindling, or a higher temperature if you’re going to be on hand to watch the oven – some people have had success drying green wood in an oven set at 425 degrees F. Because the ignition point of wood is approximately 500 degrees F, it’s important to be careful with higher temperatures.
Begin by placing the lower rack at the lowest position possible, and cover it with a large metal sheet pan or pans. You do not want to risk a fire, which could be caused by falling sawdust, bark, or other debris.
Next, set your oven’s center rack in the second-lowest position, right above the lowest rack. Place your firewood on it, and leave at least an inch or two between each piece. If you have a large oven with a third rack, you might have some space to place smaller wood or kindling pieces on it.
Because the moisture in the wood is going to release quite a bit of steam, it may be a good idea to turn on the overhead exhaust fan. If your home feels too dry, though, the moisture emitted by firewood drying in the oven might add some much-needed humidity to the air.
The amount of time needed to dry firewood in the oven varies depending on the wood’s size, density, and moisture content. You can use a wood moisture meter to determine if your wood is ready to burn. While the correct moisture level for firewood is 20 to 25 percent or lower, wetter wood will burn so long as it’s placed into a fire that’s already hot. Note that wet wood produces more creosote than dry wood. While it’ll do in a pinch, it’s not a good idea to burn wet wood frequently.
How to Kiln Dry Lumber at Home
As experienced woodworkers know, lumber that is reasonably dry will work for a variety of projects, so it might be best to simply bring your wood inside for about a month and let it dry. If you’re in a hurry though, you can kiln dry wood in a kitchen oven. While the size of your kitchen oven poses a limitation on the size of the lumber you can place inside, it is possible to oven-dry enough wood for small projects.
The question is, how to dry wood in an oven without making it too dry to work with? After all, wood that is too dry will reabsorb moisture from the air, and that will cause problems later.
Depending on the importance of the item you plan to build and the cost of the wood you plan to use, you may want to test-dry a few pieces before you move on to oven drying wood for your actual project. This will allow you to be on the lookout for drying defects as you inspect the wood throughout the process. Watch out for bowing, warping, twisting, cupping, and other forms of distortion. All of these indicate that the wood drying temperature is too high, and moisture is leaving the fibers too fast. You may have to test multiple batches of wood to find the ideal drying time and temperature for the material that you’re using.
Low temperatures work best for drawing excess moisture out of wood that’s intended for woodworking projects. Choose a temperature between the oven’s lowest setting (often simply called “warm”) and 225 degrees Fahrenheit. Higher temperatures could cause warping, or might overdry your wood and render it useless. Standard kiln drying temperatures are low – around 120 degrees F or so, and times vary by wood size and moisture level.
If you don’t have a moisture meter, note the weight of the wood before you get started. You’ll be able to tell that the drying process is working even at low temperatures by checking the wood’s weight as you go. You can do this with a kitchen scale, or you can simply gauge the way the wood feels in your hands.
Place a large metal cookie sheet or multiple cookie sheets on the lowest rack. If you have very small pieces of wood that might fall through the gaps in the oven rack, you can place them directly on the cookie sheet. Make sure that the wood pieces are not touching one another.
Check your wood an hour after placing it in the oven. Take a reading with a moisture meter if possible, as this is the best way to determine whether your oven-dried wood is ready to use. Be careful, as the wood will be hot to touch when it emerges.
Return it to the oven if you feel it needs to dry a bit longer. Continue to check it at 15-minute intervals as moisture content gets closer to your ideal level.
Once you’re satisfied, place the wood on wire cooling racks before moving on to the next phase of your project.
Now that you know the answer to the question of whether it’s OK to put wood in the oven, let’s go over a few important safety tips.
Because wood is combustible, it’s very important to make fire prevention a priority. Drying green firewood in the oven might not seem like a huge fire risk, particularly if it is very wet. But outer layers will dry faster than the inside of the wood, meaning that you might have some very hot, dry tinder inside your oven, just waiting to catch on fire. Protecting the oven’s element is the best way to keep dangerous sparks from creating an inferno.
Choose a safe temperature of 425 degrees F or less when drying firewood in a kitchen oven, and never place firewood under the broiler.
Don’t leave home when oven-drying wood, even when you’re using low temperatures to kiln-dry wood in your kitchen. Pay close attention to what’s happening.
If possible, have a fire extinguisher on hand in case of emergency, and know how to use it. While it’s not likely that you’ll cause a fire while drying green wood in an oven, it’s best to be prepared.
Frequently Asked Questions
Q: Can you dry out wood in the oven?
A: Yes, however there are many variables to keep in mind including desired moisture level, size of the wood, and whether the process is worthwhile in terms of efficiency and cost-effectiveness. This method works best for small amounts.
Q: How do you dry fresh cut lumber?
A: Fresh cut lumber (unless it’s a very tiny amount) isn’t ideal for placement in an oven. You’ll get the best results by carefully stacking wood to prevent problems like warping and distortion, and by using small slats called stickers between the wood to support proper airflow. If you do decide to dry fresh cut wood in the oven, choose the lowest possible setting and check moisture content frequently.
Q: What’s the best way to dry kindling in an oven?
A: Small kindling pieces averaging 2 to 3 inches in diameter are ideal for warming in the oven, particularly if they’ve already been seasoned and are simply too damp to use. If you like, you can try placing your kindling in the oven after something else has been baked. Turn the oven off and simply allow the temperature to drop naturally. This is usually enough to re-dry kindling that has been subject to moisture. For fresh, green kindling, you may want to opt for a temperature between 200 and 300 degrees. Leave the kindling drying in the oven for about 2 hours.
Q: What temperature should you dry wood?
A: The answer depends on whether you plan to use the wood for a project, or if it is simply to be used as firewood. Project wood needs to be dried slowly, at lower temperatures, for the most part. It’s OK to dry kindling and firewood in the oven at temperatures between about 200 and 425 degrees F.
Q: How long does it take for wood to dry out?
A: Seasoning firewood can take several months or longer than a year depending on its size and initial moisture content. It’s not practical to season firewood in the oven when you have a huge stack to get through, but you can easily dry enough wood for a nice, ambient fire over the course of a few hours. Actual drying time varies depending on the temperature you choose as well as the wood’s characteristics.