Mighty Buildings, a construction technology company based in Oakland, California make unique, 3d printed synthetic stone homes. They aim to create beautiful, sustainable, and affordable high-quality homes using advanced materials, patented 3D-printing technology and robotics automation.
Introduction
Contrary to conventional concrete usage, Mighty Buildings has developed its proprietary mix called LSM (light stone material). This unique blend comprises a polymer binder and mineral filler that instantly hardens under UV light exposure. Comparable to DuPont’s Corian, LSM synthetic stone is created through an additive process, delivering strength akin to concrete but at a fraction of the weight and with superior insulation properties. The 3D print undergoes rigorous scanning for final dimensions and curvature verification, and milling is employed to achieve a smooth finish.
Synthetic Stone Homes
With six Mighty Mods already completed and delivered, the company is actively manufacturing 30 more. Among its offerings are the Mighty Studio, featuring a 25’x14′ size and a 350 sqft exterior footprint, priced at around $185,000. The 1-bedroom Mighty Duo B, measuring 28’x25′ with a 700 sqft exterior footprint, costs approximately $250,000, while the 2-bedroom version is priced at around $265,000. Each unit comes with a full kitchen and bath, featuring quartz countertops, oven, refrigerator, dishwasher, microwave, washer, and dryer.
A recent visit to their Oakland factory provided insights into their construction process, from the skeleton to the final product. However, it was evident that the realm of 3D printed construction is inundated with hyperbole and misinformation. Journalists and influencers are inadvertently disseminating misleading information, undermining the true potential of this technology. A candid conversation with Sam Ruben, co-founder, and chief sustainability officer at Mighty Buildings, revealed their core values and long-term strategies, overshadowed by sensationalist claims.
Big Issues with the technology
The 3D printed shell featured in YouTube videos is not the final unit. Instead, Mighty Buildings currently utilizes a traditional heavy-gauge steel frame, welded and bolted together, along with light-gauge steel interior walls. The 3D printed curve plays a minor non-structural role, hidden behind drywall and plaster. Additionally, the claim of the unit’s insulation having an R value of 24 is offset by the expansive R2 glazing of double-pane windows. As for the claim of 3D printing a home in 24 hours, the reality is a combination of printed elements and manual assembly, taking more time than advertised.
An exciting aspect of Mighty Buildings is their use of synthetic stone (LSM), setting them apart from competitors using concrete. The company aims to develop LSM panels as versatile barriers against air, water, vapor, fire, and thermal elements. Mighty Buildings has wisely focused on creating ADUs (Accessory Dwelling Units) before expanding into other dwelling types.
Furthermore, the company offers turnkey solutions, handling permitting, foundation, utilities, drainage, onsite labor, crane, and truck delivery. Their use of flexible solar panels to power homes and outdoor pools in the Coachella Valley showcases their dedication to sustainable practices.
Conclusion
In a refreshing move, Mighty Buildings does not market these 3D printed units as homeless shelters. Instead, they target the “missing middle,” providing affordable housing options for firefighters, teachers, and community workers. Overall, Mighty Buildings impresses with its innovative approach and commitment to improving construction practices. The company’s journey is characterized by realistic, incremental changes and transparency, which distinguishes them from sensationalist claims in the media.
https://www.youtube.com/watch?v=_Aq8p8ugojU Mighty Buildings
https://www.youtube.com/watch?v=uo12ImflRYQ Fox 5 San Diego
https://www.youtube.com/watch?v=DUMVvb7igAw Monica Church
