LulzBot Taulman PCTPE Nylon 3D Printer Filament, 1 lb. Reel, 3 mm, Natural Hot-end print temperature 235C Good for objects that bend and twist, with very little stretching Flexible and strong PCTPE is good for wearable printed objects due to it's flexible characteristics, and semi-smooth finish. Prosthetic parts, harnesses, and even flexible electronics enclosures print well with PCTPE