The plans say bandsaw or hotwire to get the cores cut. My bandsaw is way too small and I have no hotwire so out with the hand jigsaw. The electric one doesn’t go that to that depth.

I just hacked around inside of the line and it was all good. I glued the pieces in with all the big hat pins I had and it is a good method for this type of situation.

FC1 is together as you can see from the final pic. Those inner cores do come out OK. I was very careful not to get glue on them.

It has a lot of joins and no doubt hours of fun later getting that perfect smooth finish on the foam which will allow the best possible layup.

Can’t wait.

Rough cut out

More pins, lots of pins

FC1 good to go