How Dry Should Wood Be Before Turning? 6-9% Moisture Content

Wood should be dried to a moisture content of around 6-9% before turning (kiln-dried commercial blanks usually land at the tight end, 6-7%). Drying wood for turning can take up to one year per inch of thickness for air-drying.

Drying wood for woodturning is a critical step to prevent cracking and warping after the item has been turned. The ideal moisture level for wood turning is around 6-9%, with a ±2% margin still considered acceptably dry — not the 10-15% range some older guides list, which is too wet for a finished piece stored indoors.

To dry wood for turning, it should be cut into appropriately sized pieces and stacked in a dry, well-ventilated area. Kiln drying wood is also an option for faster drying. To ensure the wood is dry enough for turning, listen for a ringing sound when smacking the lower ends together. Radial cracks at the center of the wood also indicate that it’s dry enough for turning.

Should You Turn Wet Wood On Your Lathe?

Turning wet or green wood on the lathe is a genuinely common practice, not a mistake to avoid – a huge amount of bowl turning starts from freshly cut, high-moisture wood specifically because green wood cuts more easily and holds a crisper edge than dry, hardened material. The tradeoff is that it moves as it dries, so the approach that works is rough-turning it oversized first, letting it dry and warp, then finish-turning it back to round once it’s stable.

A moisture meter takes the guesswork out of knowing where a blank actually stands, but the “bonk test” is the low-tech fallback woodturners have used for generations: knock two similar-sized pieces together, and a sharp ring means the wood has dried out, while a dull thud means it’s still carrying a lot of water.

Woodturning is an art that requires skill, patience, and knowledge of the material you are working with. One of the questions that often arise is whether to turn wet wood on a lathe or not. Well, the answer is yes, you can turn wet wood on a lathe, but it requires some precautions. Wet wood has a high moisture content, and if not handled carefully, can lead to cracking, warping, and splitting. In this article, we will delve deeper into how dry wood should be before turning and explore some tips for turning wet wood on your lathe.

Turning Wet Siberian Elm

Siberian Elm is a popular wood for turning bowls due to its unique patterns and grain. However, turning wet Siberian Elm on a lathe can be challenging. The high moisture content in wet Elm makes it prone to cracking, warping, and splitting. Therefore, it is advisable to avoid turning wet Elm. Instead, cut the Elm into rough blanks and let them dry for at least six months before turning them on your lathe.

Example of Turning Green Wood

Greenwood refers to wood that has been recently cut from a tree and has not been dried or seasoned. Turning green wood on your lathe can yield some stunning results, but it can be a risky proposition. Green wood is prone to cracking and warping due to its high moisture content. However, there are some techniques you can use to turn green wood successfully.

One such technique is to turn the wood as quickly as possible. The longer the wood stays on the lathe, the higher the chances of it cracking. Moreover, rough turn the greenwood into a bowl shape and then allow it to dry before final finishing.

Mounting on the Lathe

Mounting wet wood on your lathe can be tricky, as the high moisture content makes it soft and unstable. There are different ways of mounting wet wood depending on the size and shape of the piece you are working on. One common method is to use a chuck attachment that holds the wood securely in place. Another method is to use a faceplate attachment, which provides a stable surface for the wood to be mounted. However, when mounting wet wood, it is important to check the attachments frequently for any signs of movement or slipping.

Turning Between Centers

Turning between centers is a common technique used by woodturners for turning wet and dry wood. This involves using two points on your lathe to hold the wood in place. One point is called the headstock and the other is called the tailstock. Turning between centers provides a stable way of turning wet wood as it minimizes the chances of the wood moving or slipping. However, as with any woodturning technique, it is important to monitor the wood for any signs of cracking or warping.

Wet and green wood turning rewards patience more than caution alone: rough-turn oversized, expect the shape to move as it dries, and finish-turn once it’s stable rather than trying to get a perfect final shape in one pass. Whichever mounting method or technique you use, keep an eye on the wood as it moves through the process – catching a developing crack or a loosening mount early is what separates a successful green-wood piece from a cracked one.

How To Dry Woodturning Blanks Faster With Desiccant

Desiccant drying works on the same principle as a silica gel packet in a new pair of shoes, just scaled up: pack a sealed container with a wet blank and enough desiccant, and the desiccant pulls moisture out of the wood far faster than open-air evaporation would, since the air inside the container stays consistently dry instead of fluctuating with the weather.

This won’t replace air-drying for a full-size log section, but it’s genuinely useful for speeding up smaller roughed-out blanks, and it gives you more control over the final moisture reading since you’re not at the mercy of shop humidity.

Weighing Wet Blanks

Before beginning the woodturning process, it’s essential to ensure that the wood you use is dry enough. Wet wood can negatively impact the final product and lead to warping and cracking. Weighing wet blanks is the best way to determine the exact moisture content, and you can do this with a digital scale. Weigh the moist blanks before drying them for a more precise calculation.

Regenerating Desiccant

Desiccants are substances that remove moisture from the air. Silica gel is a popular desiccant used in many households. When silica gel becomes saturated with moisture, it’s time to regenerate it. Regenerating silica gel is easy. Spread the crystals in a single layer, put them in the oven at 250 degrees Fahrenheit for three hours, then let them cool to room temperature. The regenerated silica gel can then be used again as a desiccant.

How Long Does It Take To Dry?

The amount of time it takes for wood to dry depends on the environment and the wood’s thickness. For example, a one-inch-thick board will take approximately one year to dry. However, there are ways to speed up the drying process, such as using a kiln or using desiccants.

Inserting A Bowl

To dry wood blanks faster with desiccants, you need to seal them tight in a container with desiccants. Make sure that the container’s lid is also airtight to prevent any moisture from escaping. Insert a bowl with the wet wood blanks, add in enough desiccant to the container, and seal it properly. The desiccant will pull the moisture out of the blanks, leading to drying in a shorter period.

Using desiccants is an efficient way of drying woodturning blanks, but it’s essential to use them correctly for effective results. By following the steps and tips mentioned above, you can dry your wood blanks faster and maintain the quality of your final products.

What Is The Ideal Moisture Level For Wood Turning?

The 6-9% target isn’t an arbitrary number – it’s roughly the equilibrium moisture content most wood settles at inside a climate-controlled home, which is where a finished turned piece is going to spend its life. Turn and finish a piece above that range and it keeps losing moisture on the shelf, shrinking and often cracking along the grain months after you thought the project was done.

Go too far the other direction and dry wood gets genuinely harder to work: it turns more brittle, chips instead of cutting cleanly, and dulls edge tools faster. The 6-9% window is the practical middle ground – dry enough to be dimensionally stable once finished, not so dry that it fights the gouge on the lathe.

Acceptable Moisture Levels In Wood

Before you begin turning wood, it’s essential to ensure that the wood is dry enough for turning. The moisture content of the wood should be measured using a moisture meter which measures the humidity level inside the wood. The acceptable moisture content levels of wood for turning can vary depending on the type of wood, the size of the wood piece, and the climate of the location where the wood is stored. However, as a general rule of thumb, the ideal moisture content level for turning wood is between 6% to 9%.

How To Dry Wood For Wood Turning

If the wood is too moist, it is recommended that you dry the wood first before turning it. There are different methods that you can use to dry the wood, but the most common one is air drying. Cutting the wood into suitable sized pieces and then stacking them somewhere dry and ventilated is the best way to air dry the wood.

The amount of time it will take to dry the wood will depend on several factors such as wood species, the thickness of the wood, and the humidity levels in the air. As a general rule, it is often advisable to allow one full year per inch of wood thickness for the wood to dry before turning, although the longer you let the wood dry, the better it will be for turning.

Getting the moisture content right matters more than almost any other single factor in whether a turned piece survives its first year off the lathe. Measure before you commit a blank to a project, and don’t rely on how dry a piece feels to the touch – that’s an unreliable substitute for an actual reading.

How Do You Dry Wood For Woodturning?

Two methods cover almost every situation: air-drying, which is free but slow, and kiln-drying, which costs money or shop setup but gets a blank down to the 6-9% target in a fraction of the time. Air-drying at roughly one year per inch of thickness is the default for anyone without kiln access, and it works fine – it just requires planning a project months or years ahead rather than turning a blank the same week it was cut.

Whichever method you use, seal the end grain of a rough blank with wax or a commercial end-sealer before it starts drying. End grain loses moisture many times faster than the rest of the piece, and that uneven drying is exactly what causes the radial end-checks and splits that ruin an otherwise good blank.

Working With Irish Hardwood

European hardwoods like Irish-grown ash, sycamore, and oak turn well once dried, but they’re often sourced as unseasoned logs from a felled tree rather than as ready-cut blanks, so the drying step matters even more than with commercially prepared turning stock. Cut logs into blanks close to their final rough size before drying – a full log section dries unevenly and is far more likely to check and split than a blank that’s already been roughed down.

Kiln-dried

Kiln-dried wood is the most common way of drying wood for woodturning. In a kiln, the temperature and humidity are carefully controlled, which makes for a more consistent drying process. Kiln-dried wood is generally considered easier to work with, as it is less prone to splitting and warping than air-dried wood.

Drying To What Moisture Percent

Most woodturners aim to dry their wood to a moisture content of around 6-9%. That’s dry enough to prevent the warping and splitting that comes from a piece still shedding moisture after it’s finished, without going so dry that the wood turns brittle and difficult to cut cleanly.

There are a few ways to check the moisture content of your wood. One way is to use a moisture meter, which can give you an accurate reading of the percentage of moisture in the wood. Another way is to “listen” to the wood by dangling a piece of firewood in each hand and then smacking the lower ends together. Dry wood will “bonk” or ring, while wood with high moisture will “thud.”

Whichever species or drying method you’re working with, the moisture reading at the end is what actually determines whether a blank is ready – not how long it’s been sitting, not how it feels to the touch, and not a generic timeline pulled from a different piece of wood in a different shop.

Frequently Asked Questions Of How Dry Should Wood Be Before Turning

How Do You Know If Wood Is Dry Enough To Turn?

To know if wood is dry enough to turn, listen to it by dangle a piece of firewood in each hand and smack the lower ends together. Dry wood will “bonk” or ring while wet wood will “thud. ” Also, check for radial cracks that spread out from the center of the wood, which only form when it’s dry enough.

As a rule of thumb, allow one year per inch of thickness for the wood to dry, but the longer it dries, the better it will be for turning.

How Long Must Wood Dry Before Turning?

Allow one full year per inch of thickness for wood to dry before turning. Cut the wood into suitable-sized pieces and stack them in a well-ventilated, dry area. As a rule of thumb, the longer it dries, the better the wood will be for turning.

To determine if the wood is dry enough, listen to it by smacking the lower ends together. Dry wood will produce a ringing sound while wet wood will sound more like a thud.

What Is The Ideal Moisture Level For Wood Turning?

The ideal moisture level for wood turning is when the wood is dry enough to prevent radial cracks from forming, which is typically achieved by allowing one year of drying per inch of wood thickness. You can also test the moisture level by listening for a “bonk” or ringing sound when smacking two pieces together, indicating low moisture content.

Kiln drying can also be used to control and speed up the drying process.

How Do You Dry Wood For Woodturning?

To dry wood for woodturning, cut it into appropriately sized pieces and stack them in a dry and well-ventilated area. Allow one year per inch of thickness, but longer drying time is preferable. To determine if it’s dry enough, listen for a ringing sound when two pieces are smacked together.

Radial cracks also indicate dryness. Kiln drying is an option for faster drying.

Conclusion

Turning wood requires proper preparation and drying to ensure the final product is not only visually pleasing but also functional. Knowing the different methods of drying wood, as well as the ideal moisture level, can help create pieces that are not only beautiful, but also long-lasting.

Remember, patience is key when it comes to turning wood, and allowing the wood to dry for an adequate amount of time ultimately leads to a successful and satisfying experience.