We have developed a design for polymeric ℤ2 pseudo-spin Hall photonic topological insulators with remarkably low refractive index contrast (as low as 1.55). Our design is compatible with and realized by additive manufacturing techniques, greatly expanding the materials pallet for photonic TIs and allowing rapid prototyping of photonic devices with flexible design and the possibility of easily intercalating emitters. Experimental and simulated transmission spectra of Tis and interfacial waveguides offer agreement. We combined our rapid fabrication capability with highspeed FDTD simulation to screen 4096 possible corner configurations for a bent topological waveguide. By quantifying loss in transmission as a function of disorder at two distinct corners in a bent topological waveguide, we observed an asymmetry where one corner is 3-5 times more robust to disorder than the other. This dichotomy originates in the fundamental symmetries of the lattice and constitutes a new empirical design rule for photonic TI-based light-guiding devices such as resonators and delay lines. We also note that high-speed simulation, when combined with additive manufacturing can provide a powerful platform for exploring and optimizing novel designs for topological photonics by generating training sets of experimental data for machine learning. Combined, the realization of polymeric photonic TIs and quantification of the topological protection at sharp turns are additional steps forward for implementation of photonic TIs in quantum information science, low-threshold lasing, sensing and spectroscopy, and strong lightmatter interactions across energy scales from visible to microwave.