This is a working video of cutting 1mm copper with our small enclosed 50W Raycus laser marking machine with 110*110mm lens. If making it with a motorized Z axis, then it could cut 1.5mm gold silver and copper jewelry too. And if you want to know more about engraving cutting, please feel free to contact OV Laser-Jully at whatsapp +8613707153812 or Email sales4@zgglaser.com Thank you