Here’s a method for applying a high-gain optical projection surface made from common, inexpensive materials—specifically, flat white interior latex paint and glass sandblasting media. This project began as a series of experiments to produce a DIY “screen paint” by directly mixing these two ingredients, which didn’t actually work, but did lead to the serendipitous discovery of this process.

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Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.