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Wasted lumber11/11
There is a cabinet shop that closed due to the death of its owner. His widow stored 5,000BF of KD hardwoods outside but under a roof. It has been there for a year but this is on the Oregon coast and very a damp place. Will this lumber crack, split, warp,or twist if used for indoor projects? Would having it KD again do any good or would it only make it warp. 11/11
the wood should be fine as long as it was not exposed to rain or direct sun.
11/11
Thanks Bob. I am sure some of it has been rained on as there are no sides to the shed she stored it in only a metal roof and Winter storms bring stong winds with them. She sent me a photo and it shows the top of the lumber covered with blown in leaves. It was always stickered so would that have helped? 11/12
It will need to be dried again to bring the moisture down.
Test it with q moisture meter to find out for sure. 11/12
Thanks Rick. I was sure that was what would need to be done. Norm 11/13
I wonder if storing it inside for a length of time will bring the moisture back down? The wood will not regain all the moisture lost during the initial drying. The question is how much moisture did it gain? A moisture meter would tell you this instantly.
11/13
Thanks Jeff, maybe in a few months I will be able to report to everyone hwo ti worked out and what was done. Getting lots of ideas. 11/13
The outside conditions are about 16% EMC, so the wood, especially the ends will be close to 16% MC after a long storage. It is critical in getting it back to 7% MC BEFORE using it so it will not shrink, warp, open glue joints in use. If the outside was less than 6 months, warm storage at 30% RH should bring it down. Otherwise, a kiln. When checking the MC, use a MC meter with insulated needles. Take a reading at every 1/8" depth as you drive the needles in. We woud hope that the higher MC readings will just be the shell and that the core is at 7% MC still. If so, then warm room drying. If the core is above 7% MC, then kiln drying is most prudent and safe. In either case, insects (powderpost beetles) can be in the wood (It may take up to 2 years for the eggs to hatch so sometimes the wood looks great but the insects are there and will show up afyer something is made.) , so kiln drying to get the wood internal temperature to130 F would be the best. 11/13
Thank you Gene. I never thought about poderpost bettles getting into it so end of story. I will go to the kiln. Thanks everyone for your help, what a great group of people. 11/13
There may be beetles in the wood already, so keep this wood separate from any of your own wood (and other people's too) until after it is dried. It would be best to avoid having the KD wood in the same location or place that the original wood was in or in contact with undried 4x4s etc. 11/13
You think of everything for me Gene. Thanks 11/16
It is better to have it KD again. You can apply some lacquer or wax on two ends of woods in case of crack and split. Then the lumber will not wrap or crack due to the lost of moisture. In case of get twisted, you can also tie several wood together with each one side by side during KD. Space among each bundle is required for hot-gas recycle.
1/11
Tony— What do you mean by "molecular water"? It's seemed to me that kiln dried wood is much easier to redry— do you understand why? 1/11
In the USA and Canada, and much of the world, we do not call it molecular water but rather free water.
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