Live laser engraving using a 20 watt double beam laser

The Endurance a 20 watt (20000 mW) double be am 445 nm laser module attachment – engraving on a pure aluminum plate. The Endurance Laser Lab shows how to engrave on metallic surfaces using a 20 W double beam laser. First of all you need to prepare the working surface, that is to sand it a little and to cover with special pasta; then focus the beam and start engraving. When engraving is done, the pasta is to be wiped. The Endurance Laser Lab shows how to engrave on metallic surfaces using a 20 W double beam laser. First of all you need to prepare the working surface, that is to sand it a little and to cover with special pasta; then focus the beam and start engraving. When engraving is done, the pasta is to be wiped.