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Double Blades Sharpener / Pencil Sharpener

Double Blades Sharpener
Double Blades Sharpener

The usual sharpeners often cause the pencil lead fracture in use process. Through the analysis, pencil is made from lead and wood two different materials, but the stress concentrates in a line in the process of cutting. There are two short blades instead of one single piece, distributed in the up and down sides of the sharpener, distributing stress on the lead and the cone of wood respectively, to reduce the risk of lead fracture. It is not only saving the time for sharpening pencils, but also saving material to protect the environment.


Southwest Petroleum University

Southwest Petroleum University
ChengDu, SiChuan, China

Xinke Niu,
Southwest Petroleum University

Lei Wu,
Southwest Petroleum University

Rui Tian,
Southwest Petroleum University

Feng Yan,
Southwest Petroleum University