Bedroom, Chair, and Bed After the shell of prefab units is 3D-printed, the interiors are outfitted with wiring, plumbing (if the unit is larger than 120 square feet), and the client's preferred interior finishes.  Photo 3 of 7 in 150,000 Plastic Bottles Were Used to Create This 3D-Printed Tiny Home

150,000 Plastic Bottles Were Used to Create This 3D-Printed Tiny Home

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After the shell is 3D-printed, the interiors are outfitted with wiring, plumbing (if the unit is larger than 120 square feet), and a client’s preferred interior finishes.