  We present a cost-effective, eco-friendly and accessible method for
fabricating three-dimensional, ultralight and flexible millimeter-scale
metasurfaces using a household 3D printer. In particular, we fabricate
conductive Spilt Ring Resonators (SRRs) in a free-standing form, employing the
so-called Fused Deposition Modeling 3D printing technique. We experimentally
characterize the samples through transmission measurements in standard
rectangular waveguide configurations. The structures exhibit well defined
resonant features dependent on the geometrical parameters and the infiltrating
dielectric materials. The demonstrated 3D printed components are suitable for
practical real-life applications while the method holds the additional
advantage of the ecological approach, the low cost, the flexibility and the
small weight of the components. Thus, the flexible and light 3D printed
metasurfaces may serve as electromagnetic components and fabrics for coating a
plethora of devices and infrastructure units of different shapes and size.
\end{abstract}
