But what exactly is the blue part of the eraser for? | May 18, 2025

Who doesn’t remember the two-colored eraser in the school pencil case? One pink side for erasing the pencil, the other blue… why? To erase the ink? Not really. This writing instrument actually has many uses that are often overlooked. And you will see that its real function is much more practical than we thought.

But what exactly is the blue part of the eraser for?

Misconception: No, it does not remove ink.

For years, many people thought the blue part was for erasing pen marks. The result: holes in the leaves and a lot of frustration. It’s a bit like trying to remove a wine stain with sparkling water: the intention is good, but the effect is unconvincing. In reality, this blue part was designed for a completely different purpose… but it’s just as   interesting  , especially for DIY and craft enthusiasts.

Removes pencil marks from wood

If you are a DIY enthusiast or have ever assembled a piece of furniture from unfinished wood, you have probably made some pencil marks. To erase them without damaging the surface, a blue eraser is a valuable ally. It contains pumice, a grainy material that acts as   a gentle micro-sander  . Ideal for removing pencil marks from wood without damaging it.

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