Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Tunnel Hammer / Hammer

Tunnel Hammer
Tunnel Hammer

The tunnel hammer is lighter and more robust compared to standard hammers.
Anyone can feel the lightness of the tunnel hammer as it is designed in such a way that the inside is hollow and the weight of the sinker inside the hollow space allows sufficient delivery of force as per the laws of inertia and circular motion.
Most standard hammers are heavy and rather inconvenient, which could only be used by men with bulky frame. Therefore, women, children and the elderly encounter a great deal of trouble in using one of them, making the tool the exclusive property for men.


Keimyung university

Keimyung university
Daegu, South Korea


Keimyung university

Keimyung university
Daegu, South Korea

Bak seung min Lee sung min Kim hyun tea Choi jun woo