What do you mean "attach"? Technicaly, you already have a 3d object. Are you trying to model something?Referring to the image, how can i attach both of those to make a 3d model/object?
-Thank you
Ive never used the pencil tool but you might be able to loft one to the other but you might have to rebuild the curves.those 2 images were done with the pencil curve tool. One was duplicated to make 2 copies. So those are 2 2d faces which i want to be the faces of a 2 sided 3d model