A pencil sharpener was a small and delicate tool commonly used in the arts of writing, painting, calligraphy, and so on. Its appearance was very simple, usually only having a pencil sharpener handle and a pen tip. The handle of the pencil sharpeners is usually made of metal or plastic, shaped like a cuboid with many buttons and switches. The tip of a pencil sharpener is usually a sharp metal pen that can be used for writing, painting, or calligraphy. The pencil sharpeners were very powerful and could be used for many different purposes. First of all, it could be used for writing. The tip of the pencil could be inserted into the paper, and then the pencil sharpeners could be fixed on the paper by gently turning the handle. The pencil sharpeners could also be used for painting and calligraphy. The tip of the pencil could be inserted into the paint or the center of the pencil, and then the pencil sharpeners could be gently rotated to smear the paint or the tip of the pencil on the paper. In addition, the pencil sharpeners can also be used for cutting and carving. The pencil sharpeners can be inserted into the materials that need to be cut or carved, and then the pencil sharpeners can be gently rotated to complete the cutting and carving. A pencil sharpener is a very practical tool that can be used for many different purposes. Whether it's writing, painting, calligraphy, or cutting and carving, the pencil sharpeners can provide you with powerful tool support.