PLA-based luminous filament eSUN PLA Luminous is a luminous filament based on modified PLA. The luminous effect of the material makes it a perfect choice for special prints such as decorative objects or toys. PLA Luminous is eco-friendly and as easy to print as regular PLA. Note: Due to the luminous particles it contains, PLA Luminous leads to increased wear on the extruder and nozzle. A dual-gear extruder and a steel or ruby nozzle are therefore recommended for printing PLA Luminous. The light effect of PLA Luminous depends on the intensity and time of the light source. The longer the exposure time, the better the lighting effect.