We were rebuilding our back porch and decided to put up railing, but I couldnt find any connectors that I liked/fit well. So I 3d modeled my own!

I have an A1, so I printed these in ERYONE Carbon Fiber PETG (matte) since its finish closely matches the black aluminum balusters we chose. If your printer is capable of printing in ABS/ASA, it would be advisable to use either of those materials for better temp and UV resistance.