It removes waste yarn from bobbins, tubes, metal cops very quicly, without damaging them. Removes very quickly the yarn wastes from bobbins, tubes, metal supports, without damaging them and allowing a total recovery. Particularly suitable for thermoplastic yarns. The yarn is cut by a hot air knife. Easy to use, it does not require specific qualifications. Compact and slim. Need only a connection to the electric and pneumatic line to make it works.