Polymaker Panchroma PLA Steel Grey 3D Printer Filament, 1kg Spool, Easy to Print, High Speed Printing, Tangle Free, AMS Compatible, Perfect for Toys, Decor, Miniatures, Models & Cosplay

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.