Pros and cons of pencil sharpeners

Origin of pencil sharpener

With the progress of society, by the beginning of the 19th century, people not only needed to use more pencils, but also had higher requirements for the time spent sharpening pencils. The pencil sharpener of the mechanical principle was born in this environment. The world's first such pencil sharpener was invented in 1828 by a Frenchman. Over the next few centuries, pencil sharpeners evolved into what they are now known as.
The golden age of pencil sharpeners was probably from the mid-1980s to the early 1990s. In the early 1990s, automatic or electric pencil sharpeners appeared. The pencil sharpener in the traditional sense has slowly withdrawn from the stage of history.

Pros and cons of pencil sharpeners

Although it is very convenient to sharpen a pencil with a pencil sharpener, the tip of the pen is often broken because the blade is not sharp enough. Pen sharpeners and sharpeners also have two major shortcomings: First, the sharpened nib will easily scratch the paper when writing, and the nib will be easily broken. Due to the large difference in the thickness of the nib, the writing will be uneven during writing; Second, the cutting amount of the pencil lead by the blade or the milling cutter is too large, and most of the lead lead is actually cut off instead of written, which is a great waste.