Centreboard and case

The centreboard is made from two peices of 9mm ply sandwiched together and it pivots on a 10mm stainless steel bolt. Here are some photos of the construction of the centreboard case and central frame.

Two halves of the centreboard case with the 25x50 mm frames. The sheets were sandwiched onto 25x50 ends as well.

A 9mm reinforcement section was added where the pivot bolt hole would be drilled.

Inside was coated with 5 coats of neat epoxy.

.....not forgetting the inside of the pivot bolt hole.

Two Halves were then joined together

squeezing out the glue, but not all of it.

Meanwhile the two sheets of 9mm ply for the centreboard were prepared.

Added on a section at the end of the centreboard to bring it up to the correct length.

Tried it out to make sure it all worked.

Then lined up the case on the hull to cut out the hole.

Pre-drilled some holes for 4x25 screws to hold it to the hull.

Put a bed of thickened epoxy around the hole.

I scored the bottom of the case frame and coated with neat epoxy.

Epoxy fillet was rounded off at the bottom of the case. Excess glue scraped away.

Before it cured, I rigged up something to keep it straight and upright.

25x50mm frames were inserted between the hull and case for the thwart and the central frame was put in. I may have made the hole in the frame too big but sure I'm not getting paid to do this!