Natalie Wadley started a 3D printing construction business with her husband. Rather than sell material or 3D printers ChangeMaker3D is an integrator that organizes, marshals technology, and builds parts. The couple has executed 3D printing projects for houses, water infrastructure, and train infrastructure projects. In this episode of the 3DPOD, we get a ground-floor view at the real possibilities and difficulties of 3D printing in construction.