• Research

  • Strategy

  • Industrial Design

  • Engineering

  • Prototyping

An open-source 3D-printed prosthesis designed specifically for limbless drummer. To develop unique features that would allow the drummer to play more intuitively and comfortably, I worked with renowned amputee drummer Greg Anton.

Interview with limbless drummers. Through meetings with some of the most experienced limbless drummers in the U.S., we concluded with several major design challenges for the Paradiddle prosthesis.


Adjustable bounciness. By changing the length of the polycarbonate spring, the user can fine-tune the bounciness, enabling more complex play such as drum-roll.

Changing drumstick? No problem. Paradiddle can be used with any standard drumstick sizes. The changing process is quick and easy.

Testing with amputee drummer. Greg Anton is a renowned amputee drummer who has been playing drums for more than 50 years and has performed in 2016 Rio Paralympic Trailer “Yes, I can”. The testing with Greg Anton validates the functionality of the Paradiddle; in addition, the user gave valuable feedbacks that inspired further developments on the project.

Open-source further developments. After the project was published in several design websites, I have received many inquiries regarding the open-source digital files from amputees who needed help, PhD students from UC Berkeley and Orthopus, an open-source prosthesis company. It has been a great pleasure to see my works have helped others in needs.

Want to see something else?


Chess set for Giorgetti 2018 atmosphere collection.


A modern incense burner.

Siguang Ma

Mobile version

Coming soon...