How do coloured pencils get their colours? do they add in coloured dyes to the graphite and clay?
Answer:
Colored pencils are produced in much the same way as black-writing pencils, except that their cores contain coloring materials such as dyes and pigments instead of graphite. First, clay and gum are added to pigment as bonding agents, and then the mixture is soaked in wax to give the pencils smoothness.
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