wrote in message
oups.com...


Both top and bottom need flattening. I already flattened the bottom
(just the bottom of the frame needed it; it has a recessed panel). The
bottom has bowed since then and I think the top as well. Maybe I
accelerated that process by removing material from the bottom of the
frame?

Here's what concerns me as the plot thickens... This board is continuing to
move. So yes - if you take material away you are just going to make it
easier for the board to move again, and possibly more. You've got to
address the underlying problem before you can deal with the impact of that
problem.

- How old is this board? Perhaps it needs drying time. If so, then don't
take any more material off. You can only hope that it will not move past a
point that you can save it after it reaches it's stability level.

- Any idea how well dried the wood was when it was built? Knowing this
will at least get you barking up the right tree. As well, you may have a
recourse against the person or company from whom you bought the board.
Don't know, but it's worth investigating.

- How humid or dry is the area where you live? This is going to give you
an idea how likely it is that excessive movement is a result of your
environment, which could possibly point to other relief techniques. For
example, if you suffer some pretty large swings in RH you can expect some
pretty significant movement in your wood. Sealing the surfaces all the way
around may provide the ultimate solution for you, but you also may find that
having someone cut a kerf around the outside perimeter of the playing
surface to provide relief for wood movement will work. I'm not suggesting
that approach, I am just trying to suggest alternatives that could be as
different as night and day which will be based on a number of factors
including your environment.


--

-Mike-