Centerboard doesn’t fit

[DanielI]

I had a chance to drill some exploratory holes. The first, about midway down one side, seemed to show no de-lamination. In the second, on the other side, the skin is completely detached. I then drilled a third hole, about 3/4 of the way down, to determine the size of the de-laminated region, and to my surprise, there seems to be no core! Apparently the core only extends partway down the daggerboard.

So a few new questions:
1. Is this a normal mode of construction?
2. Should epoxying just the part where there is a core be enough to restore the shape?
3. If so, what should the spacing of holes be for injecting epoxy?

Thanks.

[Tin Tin]

See video, pretty easy guide, you jut need dimensions from dagger board case, allow for a couple of mils for 2 pack paint.. Soak marine ply in epoxy treatment and it will be plenty stiff and water resistant.

https://www.youtube.com/watch?v=aJ_wwPGeJeU