So What's Happening Inside an Etch A Sketch? http://ift.tt/1VT0lSc
The vast majority of an #EtchaSketch is plain old aluminum powder, ground extremely fine. It's what coats the glass screen of the #toy and gives it that distinctive grey color. The only other major component is a #metal pointer, the position of which is c
from http://ift.tt/1S7QlQv in Geek Porn
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