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Jiahao Lin

Integrated Industrial Design
I am an industrial designer who has explored products across different fields. My approach combines hands-on making, user research, prototyping and commercial thinking, with a particular interest in environmental responsibility and the emotional relationship between people and products.

One-handed Screwdriver System

Exploded View

ONEFORCE uses a slide switch to select forward or reverse rotation and a push-button microswitch to activate the motor. Both switches are within reach of the same finger, allowing users to change direction and start the motor while holding the tool with one hand.

ONEFORCE’s front sleeve combines a spring-return mechanism with collated screw feeding to guide screw placement and reset after each press, reducing manual assistance for easier one-handed fastening.

Prototypes

ONEFORCE’s prototyping process began with quick cardboard and tape mockups, progressing through foam, clay and 3D-printed models to explore grip shape, finger reach and interaction. Functional testing of the front sleeve and screw-feed mechanism informed further refinements, aiming to make one-handed home repairs easier.

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