... models, logo industry, schools, enterprises and institutions CE steel engraving cnc machine QL-6090Characteristics: 1, Germany-double with ball screw nut ... contours clear bottom, and also a 2 cm organic ease. 6, the machine is suitable for building models, logo industry, schools ... )Cast aluminium whole bed construction, (3)Circular guides in 3 axis, (4)German high precison ball screw with two nuts and ...