The main differences between vacuum and profile tables for engraving machines lie in the workpiece securing method, applicable materials, and processing techniques. A vacuum table uses a vacuum pump to generate negative pressure, firmly adhering the workpiece to the tabletop without the need for clamps. This method is particularly suitable for irregular, thin, or lightweight materials, effectively preventing vibration during engraving and improving engraving precision. However, for thicker wood, vacuum suction may not be strong enough, and unstable suction may occur during cutting or hollowing. A profile clamp table uses an aluminum profile with T-slots as the base, topped with PVC material, and the workpiece is secured to the tabletop with manually tightened screws. This method is suitable for irregularly shaped materials that are difficult to secure with vacuum suction or require processes such as relief engraving, hollowing, and cutting.