The brush is not sharp, so it can be used to practice seals and official seals, and fully realize its use value. After a period of time, hair breakage and hair loss will become more and more serious, and it is gradually impossible to gather the front (there is a hole in the middle of the pen). It should be scrapped at this time and replaced with a new one.

The brush is not sharp, which is called "bald pen" in jargon. When selecting materials, the brush, as a pen tip, is the essence of materials. The sharpness of the brush is related to the quality, life and market price of the pen. Bald pen, because these essence parts are damaged.

There are three reasons for premature baldness of brushes:

1, illegal manufacturers shoddy, Feng Ying material quality or production process does not meet the requirements, the so-called "cutting corners";

2. greedy when buying, buy inferior products if you can't tell the good from the bad;

3. Improper use.

Improper use includes:

Often push, scratch, pinch and twist the pen tip with fingernails, resulting in hair breakage;

Anxious to soften the stiff nib and press it on the inkstone, causing it to break;

Excessive cleaning of pens, especially the use of chemicals such as detergents, will lead to dull degreasing and premature fracture of pen hairs.

If you learn to choose a pen and know how to maintain it, a good brush can be used for a long time.