鸭嘴笔是用两片叶片組合而成,叶片的形状能决定笔的整个质量,它的形式如图1所示。叶片的尖端应該呈椭圓形,如图2所示。如果叶片的头部太尖,則墨汁在中間成了上弧形,这样就难画出墨綫,如图3所示。但是如图4所示的形状就划出粗綫条,墨汁流得快,結果在綫条的尾端会有过多的墨汁流出弄成一团,象这样的鸭嘴笔就不能使用了。鴨嘴笔经使用后要磨損变鈍,图5是一支磨損的笔。鸭嘴笔是不是用鈍了,辨別的方法有两种:一种是划出来的綫条較粗,不能划細线;另一种是将笔拿在手上轉动,从笔的一边轉过尖端时看是否有反光出現,假如在所有方向上能够看到反光,說明这支笔用鈍了,因为从叶片尖端的点已經磨損到产生了面,所以就出現反光。 Duckbill pen is a combination of two leaves, leaves the shape of the pen can determine the entire quality, its form as shown in Figure 1. The tip of the blade should be oval, as shown in Figure 2. If the tip of the blade is too sharp, then the ink becomes arcuate in the middle, making it hard to draw ink lines, as shown in FIG. 3. However, as shown in Figure 4, the shape is drawn thick lines, ink flow is fast, as a result of the end of the line there will be too much ink outflow into a ball, such as the duckbill pen can not be used. Duckbill to wear blunt after use, Figure 5 is a worn pen. Duckbill is not used blunt, there are two ways to distinguish: one is drawn out of the line thicker, can not draw a thin line; the other is the pen in the hand rotation, from the side of the pen to turn If you look at the tip, see if there is any reflections. If you can see the light in all directions, the tip is dull, because the tip of the tip has been abraded to the point where it has worn off.