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Reply by therealSteveN

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Posted on HELP - Oak splitting 2 days after glue up

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therealSteveN

4167 posts in 1117 days


#1 posted 05-17-2018 06:43 AM

I’m going to address what you have seen with 2 different answers. I am giving both answers because if it was all # I think you would have seen evidence before you started working with your stock. I’ll give you the easy answer first.

It’s a link to read what others have said in relationship with White Oak, especially QSWO. Pay attention to the answers given by David Sochar, and Gene Wengert. Oak cracks, simple as that. However sometimes the cracks are simply from how it was dried.

checks and flakes in white oak causing problems

Next is the exact steps you need to address about how to open up a big piece of wood, to make smaller pieces from it, just know the driest part of the board is right at the end. Once you chop it to length you change that, and it is going to be wetter on the end right after that cut, then the old end was before the cut.

Same thing applies for the face, and sides of each board. We take the board at a more stable state. and as we take off passes with a TS, Jointer, or Planer we expose more of the moisture that used to be “inside” the board. These changes in the moisture on the outside of the board now are also making it look closer to how it was after first being chopped down. Back then you had very careful stacking of the boards so air could go all around it’s surfaces and allow it to “air dry”. Now we grab them, put moisture in between them (in the form of glue) and expect that board to keep looking all flat and nice like it did before we started hacking at it.

The requirement is to always remove the same amounts of wood from all surfaces. If you really open it a lot like with a resaw, some woods do much better to resticker them for a while to allow the board to air out again. Folks who do a lot of resawing have probably at one time or another seen boards come off flat, and consistent, and the next morning they had a pile of pretzels.

Add Oak and I think you are seeing some of both.

-- Think safe, be safe


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