Atomstack S20 Max Laser Engraving Machine Built-in F30 Pro Upgraded Air Assist System 850*400mm Engraving AreaFeatures: Larger creative space: After feedback from countless users, the engraving area of 400*400 is difficult to meet the users creation and design, so we grandly launched Atomstack S20 Max, which can have a maximum working area of 850*400mm without extension rods , to meet 99% of laser engraving machine usage scenarios. More stable structure: Different from extending the Y axis (left and right sides), Atomstack S20 Max adopts a more stable and