I draw a square in Adobe Illustrator and I extruded to create a 3D bar. but now I would like to add dimension lines and so on to the drawing, but of course these don’t snap to the 3D drawing but to the original square instead. Is there a way to convert the created 3D bar to a path so I can actually snap to its lines?
After you hit the okay button on the ‘extrude and bevel’ window and while the original 2-dimensional paths that you just extruded are still selected you select ‘object’ >> ‘expand appearance’ which will create the new 3-dimensional paths for your shape.
Source : Link , Question Author : aaragon , Answer Author : user266420