48-No Formwork, No Binders, No Limits - ImpactBuild

About this episode

This episode explores innovative construction methods using Impact Printing to create sustainable structures without traditional materials.

Is it possible to build a sustainable future using the very ground beneath our feet? In this episode of Constructive , we sit down with Dr. Lauren Vasey and Kunal , the minds behind the ETH Zurich spin-off impact.build . They are moving beyond traditional 3D printing to a method called "Impact Printing" —a process that shoots excavated earth at high velocities to create structural bonds without the need for cement or chemical additives. We dive into the technical breakthroughs that allowed them to print a two-meter wall in a single session, the mission to democratize construction through automation, and why saving the world requires a profitable business model. Key Topics Discussed: What is Impact Printing? How shooting material at high velocity creates bonding without binders like cement. The Problem with Extrusion: Why typical 3D printing struggles with height and how impact printing solves the "green strength" problem. Circular Architecture: Using 100% recyclable materials sourced directly from construction site excavation. High-Payload Robotics: Moving specialized tools from the lab to autonomous gantry machines on-site. The Future of Work: Why automation…

People in this episode

Host: Seth Kalkman

Guests: Dr. Lauren Vasey, Kunal

Topics covered

• Impact Printing
• Sustainable construction
• 3D printing technology
• Circular architecture
• Automation in construction
• Robotics
• Global scalability

Keywords

• sustainable future
• high-velocity bonding
• recyclable materials
• autonomous gantry machines
• micro-factories
• waste soil
• luxury resorts

Mentioned in this episode

Organizations: ETH Zurich, impact.build

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