What to do if the white bags, light-colored sofas or even the walls at home are dirty. It can’t be washed with water. It’s easy to crack. So what should I do? It seems very troublesome to find someone to clean it. Don’t worry, just use a small eraser to clean it. Bags, sofas and other leather products can be wiped with an eraser. It will not damage the surface, and the phone case can also be wiped with an eraser. There are many, many places that can be wiped with an eraser.   Introduction   name   English-Chinese translation: 1. [rubber] The general name for vulcanized rubber . 2. [eraser] Stationery made of rubber, which can erase traces of graphite or ink. There are many types of erasers, with different shapes and colors. There are ordinary fragrant erasers, 2B , 4B, 6B and other special art erasers for painting, as well as plastic erasers , etc.   principle   Pencil lead is made of graphite plus clay. Graphite is soft, black in color, and easily adheres to paper, so it can be written. The eraser is very soft, has high friction, and is somewhat sticky. When rubbed on the paper, the written words will stick away without damaging the paper surface. Therefore, the eraser can erase the pencil writing. If you write with a ballpoint pen , the ink will penetrate into the paper and be difficult to erase.   Relevant information   use correctly   When primary school students erase typos, they want to wipe them quickly and cleanly. They often dip an eraser into their saliva and then wipe. On the contrary, the typos are erased and the notebook is ruined. Especially for painting students, the backlit part of the sketch is often overdrawn, tired of the drawing, and dirty. At this time, if you continue to wipe it repeatedly, or even dip it in saliva , it will be ruined! The correct method should be: first dry wipe repeatedly on an empty piece of paper to get a lot of “rubber surface”, then gently pour the dough onto the area to be wiped off, and then gently rub the surface with the eraser. , it will be clean after a while, and the paper will not be damaged at all!