Surface Treatment | Laser Cleaning Machines VS Sand Blast Machines In metal surface treatment, traditional methods like sandblasting and chemical cleaning involve consumable replacements, potential damage to workpiece surfaces, and challenges in ensuring thorough cleaning. Laser cleaning, however, requires no mechanical contact with the workpiece, preventing any damage. It is versatile enough to cater to the cleaning needs of flat or intricately curved surfaces, effectively preventing secondary oxidation and enhancing surface mechanical properties.