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kiln drying wood services

lumber kiln-drying services

lumber kiln-drying services

Properly kiln-drying lumber involves maintaining strict control of temperature, relative humidity and airflow within the kiln. Through the careful monitoring of these factors, we are able to uniformly dry lumber down to whatever level is necessary for your application.

Efficient dehumidification kilns dry lumber evenly to 6 to 8 percent moisture content.Timber Works offers the latest in dehumidification kiln technology to our customers. We are one of the few companies willing to dry small batches of hardwood in Ohio. Our ultra efficient kilns dry your lumber quickly and consistently while minimizing the internal drying stress of your hardwood lumber. Whatever the species or thickness, we can dry your lumber to perfect industry specifications efficiently and affordably. Contact us for a lumber drying quote today.

Our ultra efficient kilns dry your lumber quickly and consistently while minimizing the internal drying stress of your hardwood lumber. Whatever the species or thickness, we can dry your lumber to perfect industry specifications efficiently and affordably.

kiln drying ontario sawmill services

kiln drying ontario sawmill services

We use an iDRY Vacuum kiln. All iDRY models promise the same fast, reliable and efficient drying , using a combination of heat and vacuum, iDRY Turbo dries lumber and squares from 4/4 to 16/4 ten times faster than conventional kilns, while the iDRY and iDRY PLUS dry about 5 times faster.

Because wood has been kiln dried does not mean it is sterilized, as most DH kiln cycles top out at 120 degrees, not high enough to properly sterilize. It takes special effort, time and expense to do so. If you purchase wood from other sources, ask them if they perform a dedicated sterilization step. Most likely they will give you a What? look.

Air dried wood is not sterilized, no matter how long it has been drying, and since the incubation period for certain insects can take years, not seeing bugs when you buy air dried wood doesnt mean they arent in there. As an interesting observation, I have never kiln dried and sterilized live edge slabs where there werent dead bugs on the wood when the cycle was finished. Never. Live edge slabs will always have bugs under the bark or in the cambium layer. The only way to kill them is with heat, and we sterilize every single load of wood that comes out of our kilns.

All iDRY kilns use a vacuum to create a pressure gradient between the shell and the core of the wood. Conventional drying methods rely on moisture differential or gradient to move the water from the wetter core toward the dryer shell. This can be a slow process since the operator must be careful not to over dry the shell or degrade will result. The iDRY achieves its fast drying rates by maintaining a small differential between the shell and the core moisture contents throughout the drying period. Typically, the core of the wood is essentially at atmospheric pressure, while the shell of the wood is at a much reduced pressure, causing the water to flow toward the shell more rapidly.

When drying lumber it is necessary to increase the temperature while maintaining a vacuum. This causes the environment within the dryer to become superheated and therefore the equilibrium moisture content is reduced causing the moisture from the wood to convert to water vapor at the reduced pressure. The moisture from the wood can then be condensed and removed from the pressure vessel and drained via the floor drain or vacuum pump.

custom sawmill & kiln services - minnesota, wisconsin, iowa

custom sawmill & kiln services - minnesota, wisconsin, iowa

Weather you have one log or many, we can mill your logs into lumber or beams. Our thin kerf sawmill can handle up to 36" diameter logs. Our sawmill is equipped with hydraulics for loading the logs onto the mill, and also handling and turning the log once it is on the mill. Our mill is also equipped with Accuset 2 Setworks for the most accurate lumber.

kiln dry lumber at home : 6 steps (with pictures) - instructables

kiln dry lumber at home : 6 steps (with pictures) - instructables

Kiln drying your own wood at home can be a great way to sustainably harvest the materials around you, and dry it fast enough to build furniture with. If furniture is made with wood that is too wet, it will continue to dry and crack, possibly ruining the piece. This instructable takes you through the process of raw wood in the spring, to dry lumber in the fall. You can do this with any kind of wood.

Finding rough timber and logs to mill is a lot easier than you may think. There's always someone around that's trying to get rid of a fallen tree or wants to take down a dead tree. Calling around to local tree trimmers and arborists can lead to some great opportunities. These people make a living with trees, and if you can offer them a fair price for a log, they'll often choose to sell it because it saves them the work of disposal, or processing it into firewood. Put an add in the paper, call your local city or municipality and ask about who deals with downed trees. The list goes on and on, but you can definitely find something. The term "windfall" comes from just that, wind storms can mean lots of wood. Once you've gotten the wood, local sawyers are plentiful in most areas, and many will bring their portable sawmill to you for a very reasonable rate. I pay $100 an hour here, and a good sawyer can do a lot in an hour. Worth their weight in gold, these hardworking folks are a woodworkers dream come true, and they often have a stock of amazing, local woods for sale.You can also choose to mill it yourself with a chainsaw, which I partially do sometimes depending on the log. If you choose to do this, read up, and follow all the safety precautions of those tools. And like anything in woodworking, protect your eyes, ears and lungs.

If you don't seal the end grain of your logs and timbers, they will crack and split as moisture is perspired. The end grain needs to be sealed up with a material that will close up the open pores of the wood. I often mix 50/50 wood glue and water then saturate the ends several times. You can also use paint or wax. These logs all started off at a pretty normal 32 percent moisture content.

Start off by air drying your wood for a few months to shed the first bit of water naturally, maybe a loss of eight to ten percent. Stack the wood up with plenty of spacers, or stickers, to allow for good airflow, and I like to put a piece of plastic on the ground under the wood to keep the humidity from the ground from effecting the lumber. I bind the wood with tie downs to minimize cracking and twisting, and I build a temporary plastic roof to keep off the rain. Place it in a location with good prevailing winds, it makes a big difference.

After a few months, bring the wood indoors and finish the drying. To build the kiln lay poly (clear plastic roll) on the ground and then build a frame with 2x4 studs on top of it for the lumber to rest on. Leave enough space to have a standard household dehumidifier at one end, and a small fan at the other. The fan circulates the air to even out the drying. I designed mine to pull air from below, then blow the air down a plastic tube to the other end. This way I know there's no stagnant air or dampness trapped in the kiln. This one is 20 feet, or 6 meters, long. The dehumidifier is also trapped inside the kiln and is set to maximum. This model has a hose that runs out of the kiln and fills a bucket. The kiln is built around the stacked and bound lumber over a light wooden frame that carries the plastic. All seams need to be sealed with vapour barrier tape to hold the moisture in. I cut a few small access holes to control the dehumidifier and to test the woods moisture content in various places. Tape up these holes after you use them. The wood remained in the kiln for about 4 months and reached an average of 8 percent. This is mostly 2" thick arbutus, also called madrone.

Using this unique wood often presents the opportunity to really showcase a unique piece of wood that you can be proud of harvesting in a sustainable manner. Thanks for taking the time to read through this instructable, now get out there and save some logs!

Im not sure how to ask this but I hope it make sense. What would be the best way to slice the log into slabs to prevent splitting and twisting? Is there a rule of thumb to follow? Im getting ready to process a winged elm. Thanks in advance.

The drawback of this method is the power consumption. Four months with a fan (say 35W) and dehumidifier (about 240W) is about 800 kWh, which would be a substantial addition to a power bill.Out of interest what was the ambient temperature? At low temperatures the rate of drying would be slow, while these dehumidifiers are usually designed to cut out at 32 C.

If I air-dry pine (Southern yellow pine) for 6 weeks with end coating and Borax and high strength termiticide and then 6 weeks with electric fan, will I get twisting in vertical beams sawn to 12" by 12" and 20 feet long? Could I use sooner than 12 weeks and put beam under light compression (vertical members) load? Tak

Hi, Would you mind giving me a little more of a "recipe" I suppose to your drying techniques? Im very new to this hobby and I want to make a table out of fresh cut hardwood. I also want it to be an outdoor table. Thanks for your time anyway.

not all sawyers know what they are doing. I asked for some quarter sawn oak and he started cutting parallel with the grain instead of perpendicular. He did not understand. I tried to correct him but the best part of the wood was ruined for quarter sawn. So have the confidence to double check and confirm that you are getting what you wanted. That means draw a picture on the log if that is what it takes.

I read that one of the important parts of kiln dried lumber is that it is heated to kill bugs. Should be heat the wood using a solar wall or something like that or would it dry out the wood to fast. I need to process red oak.

We made a large kiln for a Boy Scout camp using the body from an old dairy delivery truck. We air dry for about one month, then rack the wood in the kiln and use a dehumidifier and small fan. With the insulation, we can use the kiln in the winter (in Ohio) as the returned heat from the de-humidifier and the fan motor are sufficient, or we can add a small heater. The kiln is nearly air-tight and the de-humidifier drains through the floor. An alternative to a de-humidifier is a simple recycled window air conditioner where the cooled (dried) air is directed back through the compression coils and then out to the racked wood instead of exhausting the heated air outdoors. This arrangement should have a higher capacity than most de-humidifiers.

the fan is inside the plastic "room"( if you look close you can see the base of it in the pic) basically it just circulates the air inside the kiln, the plastic tube directs the damp air towards the dehumidifier without blowing over the lumber again. Be warned home dehumidifier are not designed for wood drying. The coils will slowly deteriorate from the acid in the wood. Coils in wood kilns are coated for protection. Coated with what?....I have yet to find out.

Just a thought but the coils might be helped by lightly spraying them with a rattle can of outside grade clearcoat. On the other hand you don't need to collect that acidic stuff. More humid air tends to rise so you could just blow the heated and dried air in from the bottom of the kiln and then top vent the acidic vapor straight out the nearest window.

Mark Twain (Samuel Clemens) once said, 'It took me 7 days to get over the worst cold I ever had, but with proper medicine and rest, I was able to get over the next one in only 1 week'. The humor being, it took about the same time either way. In the U.S. Southeast (summer temps around 100F in the day, always near saturation at 100-percent relative humidity), a couple of my friends and I built a simple three-walled 'pavilion' structure to put poplar 1-inch planks in to 'air-dry'. We cut, run 1/8-inch strippers between layers, thousands of board feet, and in about 5-6 months, we could take 35-40 percent green poplar down to 10-12 percent wood water by simply running a barn fan (42-inch diameter 1 hp motor) at the end of the pavilion, blowing through the planks. I'm still not sure of the exact mechanics of how this worked due to the high relative humidity, but with no monetary investment beyond building the pavilion and the electricity to run the fan (pennies a day per thousand board-ft), I can't look a 'gift-kiln' in the mouth.

You can build a re-saw for cheap to cut your logs into boards or planks. All you do is mount 2 tires on a frame. One stationary with a motor and the other needs to have an adjustment from side to side for the tracking. The only part that might cost is a 4 inch band saw blade. The whole set up works just like a belt sander.

custom kiln drying - lashway lumber | williamsburg, ma

custom kiln drying - lashway lumber | williamsburg, ma

With our two state-of-the-art vacuum wood kilns, Lashway Lumber is at the forefront of a new era in wood sales and services that is transforming our industry. With our Vacutherm VacuPress 4000s unique quick-dry capabilities, we can now do in a day-and-a-half what would take a traditional wood kiln 20 days. Accommodating small or large quantities, the kiln heats quickly and efficiently, pulling the moisture from the wood and turning that moisture into vapor, which is then dispensed.

wood kiln drying service - southern appalachian wood | southern appalachian wood

wood kiln drying service - southern appalachian wood | southern appalachian wood

At Southern Appalachian Wood we offer top of the line hardwood kiln drying services. If you have newly cut "green" lumber for wood furniture, cabinets, or other wood projects, it will need to be dried first. Freshly cut wood takes months and even years to dry on its own. Our vacuum kiln drying service can cut the drying time down to 2-3 weeks compared to several months for traditional kiln drying.

In a healthy living tree, wood typically has a moisture content of 75% or higher. Our kiln utilizes vacuum power to lower the temperature at which water evaporates. At this lower temperature, we can accelerate the drying time without harming the wood. Vacuum pressure also sucks the water from the core to the shell, which is ideal for thicker pieces. Fast drying produces wood with excellent color and very little degrade.

Our vacuum kiln utilizes a continuous vacuum to dry, while heating with aluminum hot water heating plates or circulated hot air. This process dries wood up to 10 times faster than conventional method. Our kiln uses a vacuum to create a pressure gradient between the outer layer and the core of the wood. Conventional drying methods rely on moisture differential or gradient to pull the water from the wetter core out. This results in slower drying times and may

degrade the wood. Our kiln achieves its fast drying rates by maintaining a small difference between the outer layer and the core moisture contents throughout the drying period. The core of the wood is essentially at atmospheric pressure, while the outside of the wood is at a reduced pressure, causing the water to flow toward the shell more rapidly.

The Vacuum Dryer utilizes a vacuum to lower the temperature at which water evaporates.Wood is stronger at a lower temperature.By drying at a low temperature, we can speed up the drying time without harming wood. Vacuum pressure also pulls the water from the core to the shell, which is great for thicker wood.

Our vacuum kiln system is very effective at heating the wood without damaging or darkening it due to the low pressure(vacuum) environment, in fact the low oxygen environment actually contributes to the bright colors that result from the vacuum drying process.

h & p hardwoods | cusom kiln drying services

h & p hardwoods | cusom kiln drying services

Den, the president of PCS VacDry started looking at drying wood in vacuum chambers about 35 years ago. What got him interested was the fact that once in awhile a load of wood turned out well while most of the time the results were terrible.

One more thing. When the vapor pressure of water equals the surrounding pressure, the water boils. This means that it turns to vapor within the liquid and not just from the surface. Thats why you see bubbles in a pot of boiling water.

When water is heated to 212F, the vapor pressure is 760 Torr. Since the pressure around it is also 760 Torr, the water boils. Also, if you add more heat, the water boils faster but it doesnt get any hotter. Note: there is some difference with your elevation. The weight of air is 760 Torr at sea level and less in Colorado.

Here is where things get interesting. If you reduce the surrounding pressure, the vapor pressure doesnt need to be so high to make water boil. In the VacDry vacuum chamber, the pressure is so low that water boils at 104F. That means the wood is only 104.

The VacDry control system can precisely control temperature so we know what the vapor pressure of the water will be. In addition, the VacDry control system can precisely control the negative pressure inside the chamber. With these under control, we can easily control the drying rate of wood. It the wood is porous, we can add a lot of heat and boil out the water quickly. If the wood is dense and it is difficult to remove water, we add heat more slowly.

There is an added benefit to drying wood this way. When wood is dried in a conventional kiln, warm dry air is blow over the surface of the wood, lifting water molecules off the surface and carrying them away. In order for water to move from the inside of the wood to the outside surface, this process must happen very slowly. Otherwise the wood's surface can shrink and crack.

With the VacDry kiln, water boils from under the surface and you can now dry much more quickly. How quickly? If we look at Red Oak that is 3 thick, it will take more than a year to dry using conventional methods of air drying and in a conventional kiln. In a VacDry kiln, the wood is dry in 11 days. Thats about 35 times faster! And the quality is much better with the VacDry kiln. Air drying is a destroyer but you cant put 3 wet oak into a conventional kiln.

Another factor that makes VacDry kilns able to dry difficult-to-dry species is humidity. Since the VacDry is boiling water with the pressure difference described above, it doesnt matter if the atmosphere in the vacuum chamber is very humid. It can be full of water vapor which is protecting the surface of the wood from drying, shrinking and cracking even while water is still being pulled out of the wood.

The final point that we will mention here is the pressure control inside the vacuum chamber. In early vacuum kilns, the inventors would simply start a vacuum pump and they expected water to come out. That does not work. The reason is that when the water in the wood changes from a liquid to vapor, the vapor carries away heat. The water left behind is colder so its vapor pressure is lower. If the pump continues to run, the water in the wood will stop evaporating. The early inventors got around this problem by installing timers to start and stop the vacuum pump.

This is where an opportunity came up for Den. He was hired as a consultant by a company that had eight Italian vacuum kilns. The kilns were supposed to be identical but statistics were kept and it was clear that some kilns consistently dried faster and with higher quality than others. After looking very closely at components and controls, he discovered that the timers were not all set the same. He took the settings from the good kilns and put them in the less-than-good kilns. Sure enough the good kilns became bad and the bad kilns became good.

This made Den wonder what was going on and how could this be used? Timers could not be used because sometimes they would have an optimal on/off period and other times the setting would not be as good. This led to controlling the chamber pressure set point (vacuum) with a dead band. A dead band is the highest and the lowest levels that a control system allows a process value to be. If there is a lot of water boiling, the pressure goes up quickly and the off period is short. If the wood is nearly dry and little water is being boiled out, the pressure goes up slowly and the off period is longer. It is all automatic and no timers are needed.

kiln drying service in houston, texas | helmwood

kiln drying service in houston, texas | helmwood

Drying lumber is the most important, and most misunderstood part of producing furniture quality lumber. It is very important to have properly driedwoodfor use infurnitureconstruction. Wood shrinks and moves significantly as it dries. Furniture made from wood that is not properly dry will likelywarp, form gaps, and potentially pull itself apart. Even air dried lumber is not adequate in our area. The "equilibrium"outdoor moisture level for wood in the Houston area is 13-14%, depending on the season. The target moisture content for indoor furniture use is under 10%, ideally 6-8%. The moisture content of wood changes based on theenvironment around the wood. Indoor heating andair-conditioningmakes our indoor environments much drier than the outdoors.

Another important aspect of kiln drying lumber is to kill bugs, larva, and fungus that is living in the wood. Thisrequires a sustained temperature over approximately 140 degrees. Our vacuum kilns run at 160 degrees, and operate under a vacuum. The high temperate and lack of oxygen will kill any bugs, larva, and fungus living in your wood. All without the use of any chemicals.

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