The main disadvantage of a pencil sharpener

- Dec 18, 2017-

There are two major drawbacks to the pencil sharpener and the stylus:

First, cutting the nib too sharp, writing easy to cut paper, nib easy to break, because the thickness of the pen is too large, in writing, resulting in uneven handwriting;

Second, the blade or milling cutter to the pencil core cutting volume is too large, the majority of the lead is actually cut off rather than write off, a lot of waste.