The inside of an Etch a Sketch is mostly aluminum dust that forms a coating on the underside of the screen, and a metal pin that scrapes the dust away when you turn the knobs. Source Source 2
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Friday, May 6, 2016
did-you-kno: The inside of an Etch a Sketch is mostly aluminum...
Imported from Tumblr: http://ift.tt/1SSY9t3
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