I am making a countertop from African Teak. I bought some 12/4 planks. The woodshop said they were not KD, but had been in their inventory, stored in a shed stickered for 2 yrs. I resawed them to 6/4 and they are now in our community woodshop, stickered. I put weights on the top board to prevent warping. The shop is airconditioned during the day, not sure about nights. My question is how long do I need to let them sit before I start planing and glueing? The wife wants her new countertops, but I’d like to avoid problems with warping in the future.
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Replies
thumbs, rules and meters
I believe the rule of thumb for air drying is one year per inch, a fact that may not please the lady of the house. ;-)
You may be better off investing in a meter to measure the moisture content. The two years air drying the 12/4 stock probably wasn't enough. There's a recent survey of available meters in the Tool Guide section of the home page here:
https://www.finewoodworking.com/SkillsAndTechniques/SkillsAndTechniquesPDF.aspx?id=2792
There are other members here who actually know what they are talking about, though, so they may provide better info.
Thanks for the good info. I borrowed a moisture meter (pin type) which showed 6% on the newly sawn side, but I expected a higher moisture content. To confirm I cut off a short piece to do the oven trick. I used a small piece, weighing 88 grams. After 5 hours at 200' F, the weight is now 82 g, about 7% loss in weight. Not sure how accurate my scale is - it is designed for kitchen use and gives digital results in even number of grams. However both indications point my way and my conclusion is I am good to go.
From another post on gluing this teak, the wood may be in the Middle East so perhaps 6% is reasonable.
Compare the moisture content reading on the original outside and the resawn surface, as it's the comparison that is important, more so than just the resawn surface number.
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