You hit the nail on the head Chris! Photoshop baby! Power to the pixels! -----Original Message----- From: Chris You can do this with Photoshop, make a transparent layer then draw opaque black over the principle lines and then delete the image layer then flatten image. Who wants to use nasty smelly poisonous chemicals now... Thank you for the idea. Chris. :> -----Original Message----- :> From: Old Photographers :> <snip><natter><natter><natter> :> :> Here is an article from Modern Mechanix magazine detailing what your :> student was talking about. :> :> http://blog.modernmechanix.com/2006/07/23/trick-drawings-from-photos/ :> <snip> <mumble><natter><zzzzzz......>