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whenever we decide to fix something by using a hammer, there is risk of hurting our hands. In order to solve this problem,this is a special hammer that can drive a nail at different angles, which can effectively finish our work without hurting ourselves. I add a nail slot at the bottom of the hammer, which contains four parts. The magnetic poles within these four pieces allow them to connect with each other. There is also a switch at the bottom of the hammer that can control the clip nail. The bottom parts of the hammer can aiso attach to the hammer head and consequently created four different angles i.e. 0, 15, 30, 45.
Dalian University of Technology