We start with high-quality, filament-grade PLA granules and then dry them for 3 hours before mixing in colour and our strength-boosting additive. The mixture is then extruded and passes through 2 cooling tanks which cool the filament evenly on all sides. This ensures the filament will be more circular than oval-shaped in diameter. Compressed air is used to blow off any remaining water on the filament before the diameter is measured to ensure a tolerance below +-0.03 mm. The length of the filament is measured as it gets spooled onto our cardboard rolls and stops when the correct weight is reached. In total it takes 14.5 meters of industrial equipment to manufacture every spool of filament.