Thanks for the replies,
Actually I was thinking ahead a little. I was thinking of the large and variable fillet that goes between an airplane wing and its fuselage. I could model it rather easily but if I wanted to build the plane then I would need a template of the flattened fillet so that I could lay it in place. I could (and probably will) fill it with balsa pieces and then use some wood filler and then then sand to shape but it would be really cool to lay a pre cut piece in place and bend it back to shape.

Thanks again.