Polymaker PLA Filament, Steel Grey 3D Printing PLA Filament 1kg - PolyLite 3D Printer PLA Filament, Dimensional Accuracy +/-, Compatible with Most 3D Printer, Steel Grey

The most engineering-minded consumer brand in this space. Polylite is their everyday PLA, PolyMax adds impact resistance, and PolyWood nails the timber look. They publish data sheets and actually explain what's in their formulations.