On Thu, 15 Sep 2005 22:11:16 +0000, Toller wrote:

My mahogany dagger board was damaged when I bought the boat used. I glued
it with epoxy and put some fiberglass around it and it has held up for a few
years, but I don't think it will last.

I bought some 8/4 white oak on ebay for almost nothing (100bf for $1.25),
and figured I will build a new daggerboard while I had something intact to
copy.

The blank is 44" long, 2" thick, and 15" wide. It weights 35 pounds.
I originally intended to cut the corners off on my table saw, but it is so
heavy that it doesn't seem particularly safe.
So, I have been going at it with my 3" belt sander and my 2" power planer.
Both would work, but they would take hours and hours of work.

Any suggestions for a good way to shape my blank into an airfoil shape?
I am thinking of buying a better planer, but hope someone here will be
resourceful.

Several people have suggested finding NACA foil software. If you don't
want to do that, I would be happy to calculate the coordinates for you and
post them here. I would need to know the desired thickness of the foil
(at its thickest point), and the chord length (fore and aft extent of the
daggerboard).

I am assuming that the daggerboard is basically rectangular when viewed
from the side.

--Mac