Thanks everyone for commenting... spooky 3d gfx: i took a postive cylinder- rotated 90 degrees and stretched to the width of the wing (this at least resembles if not forms the curved aerodynamic shape of a wing). i then (i think!) duplicated the cylinder and converted it to a sphere, which i set to intersect. i then rescaled and grouped; hence the curved front edge. i'm not quite sure what i did next (minor memory blank ; ), but it probably had something to do with negative cubes (for the back slopes). hope this helps and i'd love to see the picture!!! Gecko