The door handles feature a simple, streamlined form that makes them easy and cost-efficient to manufacture. Thanks to their minimal geometry, a wide range of materials—such as aluminum or stainless steel—can be used. The entire handle can even be produced as a single piece, further simplifying the production process and enhancing durability.


The door handle allows users to choose how they want to interact with it—either by hand or by arm. The upper section is designed for arm operation, while the lower section is intended for hand use. The handle gradually tapers from top to bottom, ensuring comfortable and secure interaction for users with different hand sizes.


The door handle gives users the freedom to choose how they want to operate the door—either with their hand or their arm. The upper section is designed for arm interaction, while the lower section is intended for hand use. In addition, the handle tapers from top to bottom, making it comfortable and accessible for hands of different sizes.


Physical model










© 2025 Shengjie Guo. All rights reserved.  
Based in Berlin – Available for collaboration worldwide.



DZ 1    


Shengjie Guo

Winter semester 2021–2022

Coorprate partner
FSB

Industrial Design

HTW Berlin




Made With:

Miro
Procreate
Rhino
Keyshot
Photoshop

Design Stack:

Industrial Design Thinking 
Ergonomic Analysis
Human–Object Interaction 
Inclusive Design 
Form Exploration
CMF Development
Mechanical Detailing
Rapid Prototyping
Design for Manufacturing (DFM)
User Scenario Simulation 
Visual Storytelling
Rendering & Presentation Design