... be paused timely, increased and dis-creased speed, adjusted depth, and previewed engraving path plane and 3D drawing.4), Advanced file ... the precision under long time use.6), Operation:is simple and convenient.7), Imported double nut screw, make sure engraving ... prolonged working time.10), Machine body is heavy enough and stable enough to burden materials without transforming..Suitable material:PMMA ...