answersLogoWhite

0

The Etch-A-Sketch contains very fine aluminum powder, which sticks to the glass. The knobs are connected to wires and pulleys, which move a plastic stylus vertically and horizontally. The stylus scrapes a tiny amount of the aluminum powder off the glass, leaving a visible line. If you draw all over the screen and clear away all the aluminum powder, you can see the mechanism inside.

User Avatar

Wiki User

14y ago

What else can I help you with?