On Sat, 16 Jul 2005 08:09:10 +0100, "Steve"
wrote:

I intend to make 3 curved rafters for a garden application. Each rafter
needs to be 7ft(L) x4inch(H) x 1-1/2inch(W) finished. The radius of the
curve will be 10ft.

Material will be 1/4 inch external grade ply laminated to make up the width,
glued and screwed over a former. How much "spring back" should I allow for?

very little with plywood.


I had Resourcinol in my head but a previous post suggests this is OTT for
this sort of application (probably mega expensive too), suggestions
welcome.

tightbond 2 is plenty strong and waterproof enough as long as it won't
be getting rained on directly.




I can probably buy these,

I've never seen them for sale. there's a reason for that, too. curved
(bowed) rafters like I think you're talking about take weird side
loads. are you sure you have your engineering in order?


but then thats just another learning opportunity
lost.

Best Regards

Steve