... frequency spindle cooled by water high precision Mars7080 cnc router for jewellery Performance features: 1.This series adopts advanced ... and good durability, 4.Rotary parts is optional which is for engraving cylinder material. Available material Copper, aluminum, jade, ... acrylic, double-color plates, organic glass, PVC boards, ABS wood , ox-horn,and various non-ferrous metals. Application field ...