No, the blue part of the eraser is not for erasing pen ink.
We’re used to thinking that the blue part of the red-blue eraser is used for erasing pen ink. We even tell our children that when they ask us.
But has it ever worked? Didn’t we all end up with torn pages after a vigorous attempt of trying to erase whatever we wrote down using a pen?
The blue part of the eraser is used for erasing pencil marks on grainy art paper, hence the rough and grainy texture of the eraser. It would require you to use more force to erase something written on these rough paper if you’re using a normal eraser (the pink part). The bue eraser makes the task easier.
Not sure where the logic of erasing pen ink came from, but at least now you can stop damaging the pages of your exercise books now.
