  Pentamode metamaterials approximate tailorable artificial liquids. Recently,
microscopic versions of these intricate three-dimensional structures have been
fabricated, but direct experimental characterization has not been possible yet.
Here, using three-dimensional printing, we fabricate macroscopic polymer-based
samples with many different combinations of the small connection diameter $d$
and the lattice constant $a$. Direct measurements of the static shear modulus
and the Young's modulus reveal that both scale approximately according to
$(d/a)^3$, in good agreement with continuum-mechanics calculations. For the
smallest accessible values of $d/a \approx 1.5\%$, we find derived ratios of
bulk modulus $B$ to shear modulus $G$ of $B/G \approx 1000$.
