Ever Have an Eraser With a Blue Side?
As a kid, and sometimes even today, erasers were essential for anyone in school. While it has been known to erase pencil marks, that blue side has a purpose as well!
Turns out, that blue side of the eraser is meant to erase pen ink but it actually only works on very strong and thick paper. The blue side of the eraser is harder and more abrasive than the soft, pink side. It also takes a lot more paper off when you use it, hence all the times you’ve ripped through your paper while using it.