Construction professionals know this well: marking walls with a pencil is often essential for taking measurements. Once the work is finished, these marks must be removed. Thanks to its abrasive texture, the blue eraser allows them to be removed cleanly on surfaces such as concrete or plaster, where a conventional eraser would be ineffective .
It can be used on wallpaper (with caution
This is a little-known but sometimes very useful trick. When you write instructions directly on a wallpapered wall, it may be necessary to remove them later. The blue eraser can do this, but with caution: its roughness requires delicate use. You should erase lightly, without insisting , a bit like you would carefully clean an old window.
It is useful on cardboard or thick papers
In creative pursuits, erasing a grease pencil line from cardboard can be difficult. This is where the blue eraser comes in handy. Its firmer texture allows for erasing without excessive rubbing or damaging the surface. A practical tool for those who love creative hobbies.
Why is it still present in school pencil cases?pink or white part, while the blue one remains intact. Yet, it continues to be sold at the start of each school year. No doubt because it has become a stationery classic , a sort of Proust madeleine. It reassures, evokes childhood, and pleases parents, even if it is not necessarily the most suitable for school needs.
The right reflex: choose the eraser according to its use
If you’re simply looking to erase a pencil from a piece of paper, a standard eraser will be more than enough—and often more economical. The blue part, on the other hand, is best reserved for more specific uses . This helps avoid waste and allows you to better adapt your equipment.
And you, did you know these real functions of the blue eraser?
