hand drawn holograms

See Scratchholograms can be made upon CD, DVD cases or other soft plastic using a couple of thumbtacks poked through a stick. Or get fancy and use a professional compass and blackpainted polycarbonate plates. Or automate the process with a paperclip stuck into a motorized electric eraser, or a CNC mill with a dragengraving tool. For lots of hints, see Best is to use a good 10 compass, soft plastic that s slightly greasy, and rep