SQ4D uses an Autonomous Robotics Construction System, also known as an ARCS printer.
The company’s printer has built three concrete houses in New York state: one in Riverhead, another in Islandia and the third in Calverton.
SQ4D builds the house on site. It brings its printer, a pump, and a volumetric mixer to the site along with the raw materials for the concrete — sand, water and Portland cement, Henry told Insider.
Then, the raw materials are mixed and the cement is pumped through hoses and pushed through a nozzle. The code for the design has been uploaded to the printer.
The printer then builds the foundation walls.
Insulation is placed between the ground and the cement.
Tubing for plumbing and electricity is placed along the foundation, and then a slab of concrete is placed on top.
Here’s what the foundation looks like when it is finished.
Next, a floor plan is painted on top. The red lines in this picture are where the walls will be built. The tube-like structures protruding out of the ground mark where plumbing and electrical hookups have been placed within the floor plan.
The printer then builds the walls of the house on top of the foundation.
Operators attend to the printer as it’s working.
Once the walls are built and some wood framing is installed, this is what the house looks like.
A close-up look at the cement wall.
The walls are curved ever so slightly where the printer turned. These walls and wood door frames are in a hallway of the home. The insulation comes next.
The printer can make some unique geometric shapes, too. For example this curved cement slab protruding from the wall will be a kitchen counter peninsula once the house is finished.
The finished product can be painted any color the owner chooses.
That goes for the homes’ interior too. Here is the Riverhead house, where the walls of the living area are painted sage green.
While some walls retain their 3D printed texture, SQ4D stuccoes certain surfaces — like the ones behind these cabinets — to give them a smoother look.
Here is an example of the contrast in texture. SQ4D installed wooden molding throughout the house after the printing was finished.
This house is being used as a short-term rental. Henry says one of the first things that people do when they enter the house is run their hands along the wall to feel the texture.
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