Thanks for your replies. That was what I was hoping for and yes, these will be ribs for a wing albeit a vertical wing on a sailboat.

I am hopefully about to join a makerspace that has a 3D printer with a 305mm x 305mm bed that will take up to a 420mm part like this across the diagonal. If this approach is not viable, I'll revert to laser cutting parts from ply since I've done this hundreds of times before. Nevertheless, thanks for the information and I'll also look into simpler materials.

Tony