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Water Content Of Hickory For Indoor Use12/16
Gene Wengert said that all wood species should be dried to 6-8% if used indoors but the distributors say that if hickory is taken to that level the cells will collapse making it hard to mill and glue.
We're always having trouble with it. Our products are used indoors and we think it should be closer to 6-8%. Does anyone know if taking it to that level will really cause the cells to collapse?
What MC do you spec. for the other species of lumber you buy? It seems to me all your lumber should have the same MC.
In the more than 40 years that I have been kiln drying lumber for industrial use (furniture, etc.), including hickory and pecan, I have never heard of collapse in hickory caused by drying to 6-8%. Gene's recommendation of 6-8% for wood used indoors is good advice since the wood would lose moisture while in use, and equalize to the EMC of the atmosphere around it. Since you are experiencing problems with the hickory at the 12% mc, it is possible that drying to 6-8% would solve some of these problems.
Species doesn't matter. Mc is mc.
6-8% regardless of species.