alt Hacker NewsIn fact, I believe that the article is describing a reinvention of this technique! Just with a plotter on oil rather than a compass on plastic.
In fact, I believe that the article is describing a reinvention of this technique! Just with a plotter on oil rather than a compass on plastic.
He did it on plastic CD cases, not oil. The oil in the beginning of the article was just for explaining the refraction that happens with the ridges in the structure.