"J. Clarke" wrote in message
...
On Fri, 08 Dec 2006 22:58:02 +0000, Leon wrote:

What method does it use to support the curvature of the board so that you
get flattening?


There are about 8 or 9 even spaced rocker strips that the board actually
sets on and these set on the sled. The rocker strips use triangular wedges
that are dadoed in to each end and held in place by the very point of a
screw. The triangle wedges slide in to raise the rocker strip or slide out
to lower the rocker strip.

I got the plans form FWW IIRC. I can repost plans if you would like to see
them.