How do erasers erase?

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Author's Note: How do erasers erase?

I learned something new about pencils while researching this article. No, not that pencil lead isn't lead (I knew that fact already); rather I learned about the pencil sandwich -- the industry term used to describe how pencil wood is placed around the graphite insert. I did, however, also learn that there's a reason I prefer a soft, kneaded eraser over erasers of any other flavor: It actually does the job you expect an eraser to do.

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  • Conley, Gregory. "Erasers." (Feb. 15, 2013)
  • Lunsford, Robert. "Today is Pencil Day!" The Roanoke Times. 2010. (Feb. 15, 2013)
  • Morimoto, Kazuki; and Yasuhiro Nishioka. "Publication number: US 2011/0124778 A1 -- Abradant-containing eraser." U.S. Patent and Trademark Office. 2009. (Feb. 15, 2013)
  • Reader's Digest. "What Can You Clean With an Eraser?" (Feb. 15, 2013)
  • Ritter, Steve. "Erasers." Chemical & Engineering News. Vol. 80, no. 50. Page 33. 2002. (Feb. 15, 2013)
  • Ritter, Steve. "Pencils & Pencil Lead." Chemical & Engineering News. Vol. 79, no. 42. Page 35. 2001. (Feb. 15, 2013)
  • The Atlantic. "Nothing Is Permanent, Not Even Ink." 2010. (Feb. 15, 2013)
  • The Human Touch of Chemistry. "The history behind your eraser." (Feb. 15, 2013)
  • World Watch Institute. "Life-Cycle Studies: Pencils." (Feb. 15, 2013)
  • Writing Instrument Manufacturers Association. "Fun Facts and More." (Feb. 15, 2013)

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