A gif of a rending of the ICON Vulcan 2's printer bed opening up and turning 360 degree around.
This is a rendering of the Vulcan 3D printer with 3 layers of 3D print finished.
This is a rendering of the Vulcan 3D printer with the structure finished. .
The ICON Vulcan first generation photograph captured at night with lighting on the 3D concrete printer and the structure the printer is printing.
A close up of the Vulcan II's nozzle as it is extruding concrete to make a structure.
The ICON garage with the Vulcan 2 and 5 example prints or corners and colors.
The ICON garage with the Vulcan 2, example prints, programers, and lots of technology.
Two renderings of the ICON's Vulcan and Vulcan 2, printing concreate.
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The ICON logo in gray, "icon".

Vulcan II 3D Printer

When ICON first approached us with their idea of a 3D printer that could build homes they were a company of three with an unprecedented goal. Not to turn down a challenge, we designed and built the Vulcan I printer and helped them print the first permitted 3D printed home in the country in early 2018. Roughly nine months from when we first began working with Icon they were wrapping up a $9 million investment round and we broke ground on the second iteration of the printer, the Vulcan II.

The Vulcan I was really a proof of concept, showing the world that a house could be built quickly and cheaply using 3D printing technology. The Vulcan II needed to be able to actually go out into the world and print multiple homes in a variety of conditions. As we developed the architecture for Vulcan II, priority was given to improving the material delivery system (MDS). Concrete is an inherently finicky material to work with and the original design had multiple points of possible failure. We moved the heavy mass of about-to-be-printed concrete off of the extruder nozzle and streamlined the rest of the MDS to be more reliable. Much of the insight into what to improve came from our team being onsite and working directly with Icon during that first home print.

Another major design requirement of the Vulcan II was that it be portable with a minimal amount of setup and calibration. That meant that weight was also a concern and needed to be kept to a minimum. We were able to achieve this while also increasing the size of home the printer could build and increasing the overall speed of print.

While we were designing the Vulcan II, Icon was building up their own staff of talented engineers. We worked alongside their growing team to ensure a seamless transition of responsibility to them, without Icon ever needing to delay progress on their goals.

The second 3D printed home was completed in the spring of 2019 at the Community First Village of Austin, and was printed with the newly designed Vulcan II. Its next mission; a community of over 100 homes in Central America, and dozens more at CFV.


  • Concept Development
  • System Architecture
  • Detailed Design
  • System Integration
  • Testing and Refinement
  • Ramp-Up and Production Support

Other Icon Projects