Whatever you use to cut the exact piece out, take your time and try to stay against the line and not veer to the inside of it. It won’t matter a great deal but is not desirable. Smooth of the to the exact line using a gritboard and just abrasive cloth wrapped around a piece of wood. I found the ideal tool as a well moulded plastic abrasive cloth holder that has a really effective clamping system. Any large hardware store should have such. This is mine
SANDER I mainly use 80 Grit and something like 120 for finishing when cutting out these hull sections.
Important Take a lot of care in cutting out the bulkheads, they are the very heart of the boat and need to be accurate if you are to achieve a symmetrical hull. A large bandsaw will make the job a lot easier but is not essential.
JIGSAW An electric jigsaw is going to make the job a lot easier, particularly cutouts in bulkheads. other wise any hand tool like a hacksaw, fret saw or similar will suffice. It is better to cut a bit oversize rather than undersized as you can adjust that with sanding boards etc.
Bob W tells us… A Davids plane is excellent for trimming ply slowly and carefully. If can afford it a dremel is a must . After you have a dremel you will wonder how you did without! VIDEO
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