One of the choices of writing brush: when it is sharp, both ends should be sharp and the strokes should be solid. The pen tip is easy to write, and the pen edge is easy to draw. When buying a new pen, the hair is glued and polymerized, which is easy to distinguish.
The second choice of writing brush: the round finger pen is as complete as a jujube pit, with a right cone shape and sufficient hair. If you have enough hair, you can write with complete strokes and full and thick lines. On the contrary, the body is thin and the pen strength is insufficient. The pen is perfect. The pen can turn. When shopping, there is glue in your hair. Is it perfect? Just take a closer look.
The third choice of brush: after the nib is flattened with water, the nib is even. Because the pen needs to be completely wetted, it is difficult to check this when buying.
The fourth choice of writing brush: the elasticity of healthy finger pen. Press hard, lift the pen, and then return to its original state. If the pen is flexible, it can be used freely; Generally speaking, rabbit hair and wolf hair are more elastic than wool, and books are strong and firm. In this regard, press the pen after wetting, and the front is straight and healthy.
The fifth choice of brush: see if the pen tip and the pen holder are firmly bonded, and whether the pen tip is moldy and moth-eaten. Gently shake the pen with your hand to see if it is loose; Check whether the brush tip is moldy. You can smell it.
How's it going? Does it help?