I built the top of my computer desk out of recycled maple flooring.
The strips were about 1-5/8" wide and 7/8" thick, face glued to make a
30" x 72" x1-5/8" slab. All of the wood sat in my shop for several
months before the assembly started, and the finished slab sat in my
shop for alomost a year before the final project was completed, finish
sanded, and sealed with many layers of polyurethane on all sides.

The question:

As I slide my hand across the laminatioins, I can feel ripples. at
almost every glue joint. I know the top was dead smooth when I sealed
it. My thinking is that since the grain in these flooring strips was
anything but straight, I am seeing some micro-warping where one strip
of wood is moving ever so slightly in a different direction than it's
neightbor as the moisture content in the wood changes. Am I on the
right track?

Thanks,
Ed

Ed wrote: I built the top of my computer desk out of recycled maple
flooring.
The strips were about 1-5/8" wide and 7/8" thick, face glued to make a
30" x 72" x1-5/8" slab. All of the wood sat in my shop for several
months before the assembly started, and the finished slab sat in my
shop for alomost a year before the final project was completed, finish
sanded, and sealed with many layers of polyurethane on all sides.


The question:


As I slide my hand across the laminatioins, I can feel ripples. at
almost every glue joint. I know the top was dead smooth when I sealed
it. My thinking is that since the grain in these flooring strips was
anything but straight, I am seeing some micro-warping where one strip
of wood is moving ever so slightly in a different direction than it's
neightbor as the moisture content in the wood changes. Am I on the
right track?


That, or the MC in the glue joint isn't changing as readily? Tom

In article .com,
"tom" wrote:

and the finished slab sat in my
shop for alomost a year before the final project was completed, finish
sanded, and sealed with many layers of polyurethane on all sides.

The glue-line has a different absorption rate for poly, moisture etc.
then the adjoining wood. I see this in butcherblock...sometimes a year
later.