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For this pencil, it can be turned into a pushpin at the end of its life. At the end of the pencil, it uses the steel nail to replace the original lead. Based on a simple and cheap structure, it enables the user to obtain the pushpin by twisting the end of the pencil when it is too short to write, so that the pencil can get reborn at the end of life.
Wuxi , Jiangsu, China
Junlong Chen ,
Haibo Jin ,
Anhui University of Science and Technology
Haolin Li ,
Ning Liang ,