Scratch-Hologram FAQ
Q: I DON'T UNDERSTAND HOW TO MAKE THEM! A: Follow the instructions on the top page, but also take a look at the following diagrams: 1. Make curved scratches as shown above Your first hologram should be something very simple. How about the letter "V." First draw the little "V" as a guide. Draw it near the bottom edge of your piece of plastic. Next, use the dividers to make lots of curved scratches above the "V". For each scratch, place the point on a different spot on the "V." Each scratch should be a quarter-arc or even a half-circle. Don't change the distance between the metal point...
Source: amasci.com