When bending 19mm marine ply for the cabin roof of 'Bluefin' I used 'G'
cramps with a large block of wood to spread the load at the gripping point.
Roof beams were 3" x 2" mahogany, 8' long with a 3" rise in centre. ie a 3"
beam cut from a 6" wide section to allow for the curve. Ply was fixed across
3 beams at its centre then cramped to shape and screwed down at 12"
intervals while still under pressure. Fixed 3 sheets that way with no
problems.
Peter
"Old Nick" wrote in message
...
On Wed, 3 Mar 2004 23:30:09 +0100, "Marcel"
vaguely proposed a theory
......and in reply I say!:

What boat are you building and how are you building it?


The problem is how do you bend wood on a yet to built boat.
I am using wood 7mm thick and 50mm wide.



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