1. HP MJF Design Guide

Year: 2017 - 2019
My Role: Project lead, 3D modeling, documentation

One of my self-initiated projects at HP Labs was exploring applications of thin and flexible 3D-printed parts. My backgrounds are in both 2D visual and 3D media designs, and I was interested in designing 3D-printed parts inspired by traditional 2D print media, origami, and patterns. The findings from the explorations were documented and transferred to the online HP MJF Hand Book demonstrating various 3D design use cases. Here below are the 3D-printed parts I designed for the experiments.  

3D-printed 2.5D typography designs
3D-printed Christmas cards with moving snowflakes
3D-printed business card

Paper-thin 3D-printed parts

Page excerpts from “Online HP MJF Hand Book”.
(menu > Innovative Design > Living Hinge)

2. 3D Metamaterial Structures 

Year: 2019
Team: Jiwon Jun (HP), Alexa Siu (PhD, Stanford University)
My Role: Project lead, 3D modeling
Conference: Symposium of Computational Fabrication 2019 (Abstract)
Article: Innovation Journal (Issue 11: Winter 2018) magazine

Stretchable and reconfigurable metamaterials have recently attracted attention. These materials can be engineered to exploit motion, deformation, and mechanical energy to achieve particular physical behaviors. Although several of these concepts have been explored through simulations in idealized systems, 3D-printing the metamaterial structures is still a challenge due to its complex geometry and difficulties in achieving desired mechanical properties of the parts by controlling various factors in the printing process (e.g. material and print orientation). In this work we focus on fabricating these structures at a macro level specifically using HP’s Multi Jet Fusion (MJF) 4200 printer with Nylon PA12 material. We describe the process in translating the proposed patterns for successful realization into 3D printed parts.


This is a flexible 3D-printed PA12 part inspired by the Miura-Ori fold. Due to its geometry and thin walls, it is partially compressible and stretchable by hand. It was demonstrated at the Symposium of Computational Fabrication 2019 as part of the project “An Exploration of 3D-Printed Metamaterial Structures” (J. W. Jun, A. F. Siu. 2019). 

Mirua-ori fold 3D model
The part is thinner than 1mm, and the folds function as living hinges

The part is semi-flexible and can be rolled by hand

Featured on Innovation Journal (Issue 11: Winter 2018) magazine.