Nature controls material properties by complicated assembly and structural organization of matter which contains amount of porosity. Nature controls material properties by complicated assembly and structural organization of matter which contains amount of porosity. In this paper, polymer lattices, including cylindrical simple cubic (CSC), foursquare simple cubic (FSC) and mixed simple cubic (MSC), were built by using curable resin containing a atomic-transfer radical polymerization (ATRP) initiator with Digital Light Processing (DLP) 3D printing technology followed by polyelectrolyte brushes (PMETAC) grafting via surface-initiated ATRP and thereafter electroless plating (ELP) to form metal (Cu and Ni) coatings. The compressive strengths of 3D printing polymer grids before and after surface metallization were investigated experimentally and numerically to find the dependence of the compressive strength of polymer grids on the structure and the enhancement of the electroless deposited metal films to the strength of structure. It shows that the FSC structure exhibits the maximum compressive strength of 3.76±0.31 MPa and specific strength of 1.89± 0.16 MPa/g cm⁻³, and in addition, coated with ∼100 nm metal film, its compressive strength can be 3–4 folded.