chine design/ developaple surfaces

After fruitless research in the net, please advise:

1. Obviosly for chine hulls with developable plates (i.e. hulls that can be built out of sheet material), cylindrical or conical plate development is required. What are the geometrical rules for the design of the chine, and how do you work out the geometrical drawing (on paper) , particularly for a conical surface/ plate.

2 Also, what amount of " stretch " i.e. non- truly -developable shape, can be accepted for plywood?

Any advice or literature ref. appreciated.

[gonzo]

If you design a hull with straight sections, it will develop into a flat surface. Plywood double bends. The amount depends on the type and thickness. Are you also considering polyconical shapes? If you do, it can be developed into triangular plate sections. A good exercise would be to study blueprints of designs for plywood or metal plating. Building models is a great way to learn to visualize the development of shapes. All you need is cardboard, an utility knife, tape and a glue gun.

[FRANKIEFRANKIE]

Why don't you go to Schoellmarine.com, to the man who had the mechanical patent on the first chines from the Delta Conic hull and the mechanical patent on strakes and who has been building hulls, plugs, molds, from sheet panel methods. He has good information.