i'm sure there are a few ways to secure the top and bottom of your keel.
but considering the amount of time you've invested so far, i would make some trial pieces out of scrape wood before cutting up the good stuff.
probably the one downside to wood is that the best joints typically need a lot of surface area and length to transfer significant loads from piece to peice.
with aluminum a single weld can do the job.
with composites, allowing the fibers to span the joints with a large fillet is usually enough,
since your bamboo is now carrying most of the loads, you'll need to allow space to reinforce the 90 deg alignment between the board and strut.
big gussets/fillets below the board.
a reinforced slot like a tuttle box that goes the full thickness of your board.
Today it felt i didnt advance too much.
I did all the jigs for the kell and fuselaje connection and the base plate for the board and keel connection.
it took me a while to figure out how to cut a mortise with the tools i had and make the fitting very snug.
Dont have a clue to how much base is necesary.
Can anyone give a good dimmension.
Im using a 210mm longx 85mm wide x30mm thick.
Is this enough?
i will insert 10mm into the board and glue it with epoxy and fiberglass.
That way i can make a sándwich locking the keel between the the insert and a top plate.
took me 5 hours to do all this.
29 hours logged!
what takes the most time is figuring out what method to use.
after the jig is done everything flyes!