Comparison of Hand Pressures between Anatomically Shaped and Traditional Handles
With the maturing of 3D scanning and 3D printing technology, hand tool design can be made by customizing the
user's own size, palm surface, and other data. This study mainly applied the 3D surface scanners and algae impression
technology to obtain 3D surface data that is complementary to the hand when it is held, and applied the 3D printers to print the
tool handles. A series of operation experiments were conducted to collect the data of pressure of hand for evaluating the
difference in physical load between new type and old type of handles. Eighteen adults were recruited according to the two
genders and hand size combinations of hand length and hand width distribution. The results showed that the hand pressures
of new type handles are lower than the averages during holding, which is consistent with the hypothesis of this study.
However, once the operations, the pressure values are significantly raised. The reasons may be due to the operation of the tool,
must continue turn the grip, and cannot let the user kept in close contact with the grip. The irregular shape also influenced the
Index Terms - 3D scan, 3D print, tool handle, hand pressure, customized handle.