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hand-drawn holograms
See http://amasci.com/holo/ Scratch-holograms can be made upon plastic CD/DVD cases using a couple of thumbtacks poked through a stick. Or get fancy and use a professional compass and black-paint...
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Scratch Holograms
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I experimented with this a lot when I was younger, but never to this extent. Cool stuff indeed.
Look at the instructions for making your own, and the explanation. Click on the link.
The holes are where you rest the first sharp point of the compass, while you make curved scratches with the second sharp point. Scratch-holograms always have a cluster of these marks below the actual hologram.
Benton Whitelight holograms are composed of a series of curved lines. I found that you can scribe the lines by hand rather than creating them with laser interference.