BrickStARt: Enabling In-situ Design and Tangible Exploration for Personal Fabrication using Mixed Reality

TL;DR

BrickStARt is a mixed reality design tool that enables users to create, evaluate, and refine 3D models in-situ using tangible blocks and a headset, reducing entry barriers and improving design iteration.

Contribution

We introduce BrickStARt, a novel mixed reality system that allows in-situ tangible 3D design and exploration, enhancing accessibility and iterative capabilities for end-users.

Findings

First-time 3D modelers performed better with BrickStARt than Tinkercad.

BrickStARt enables early detection of physics issues like clearance.

The system facilitates quick, tangible design iterations in-situ.

Abstract

3D printers enable end-users to design and fabricate unique physical artifacts but maintain an increased entry barrier and friction. End users must design tangible artifacts through intangible media away from the main problem space (ex-situ) and transfer spatial requirements to an abstract software environment. To allow users to evaluate dimensions, balance, or fit early and in-situ, we developed BrickStARt, a design tool using tangible construction blocks paired with a mixed-reality headset. Users assemble a physical block model at the envisioned location of the fabricated artifact. Designs can be tested tangibly, refined, and digitally post-processed, remaining continuously in-situ. We implemented BrickStARt using a Magic Leap headset and present walkthroughs, highlighting novel interactions for 3D design. In a user study (n=16), first-time 3D modelers succeeded more often using BrickStARt than Tinkercad. Our results suggest that BrickStARt provides an accessible and explorative process while facilitating quick, tangible design iterations that allow users to detect physics-related issues (e.g., clearance) early on.