| Surface Finishes | Description | Services | Applicable Materials | |
 | As-Machined | The surface directly after machining, with visible tool marks | CNC process itself | Typically used for functional parts where aesthetics are not critical. |
 | Polishing / Buffing | A method of using uses progressively finer abrasives to achieve a shiny, reflective surface. | Mechanical Finishing (Abrasive Methods) | Can be done chemically or mechanically, often used on metals like stainless steel and aluminum. |
 | Lapping | A process that uses abrasive slurry to produce a very fine, smooth finish. | Mechanical Finishing (Abrasive Methods) | Often used for critical components requiring high precision. |
 | Sandblasting / Bead Blasting | A process where small beads or sands are blasted against the surface to create a uniform texture. | Mechanical Finishing (Abrasive Methods) | Often used for aluminum and plastics to improve grip and reduce glare. |
 | Brushing | Using abrasive brushes or pads to create fine lines or a distinctive grain pattern. | Mechanical Finishing (Abrasive Methods) | Common on consumer electronics (e.g., brushed aluminum) |
 | Tumbling / Vibratory Finishing | Parts are placed in a rotating barrel or drum with abrasive media to remove burrs, smooth sharp edges. | Mechanical Finishing (Abrasive Methods) | Excellent for high-volume small parts. |
 | Grinding | A precision finishing process that can produce very smooth surfaces. | Mechanical Finishing | Often used for hard materials to achieve tight tolerances. |
 | Anodizing | An electrochemical process that increases corrosion resistance and surface hardness. | Chemical Finishing | Commonly used for aluminum parts, providing color options and improved wear resistance. |
 | Black oxidize / Blackening | This process involves a chemical reaction that forms a thin layer of black iron oxide on the surface. | Chemical Finishing | Commonly used for ferrous materials, primarily steel. |
 | Passivation | A nitric acid bath that removes free iron from the surface and enhances the natural chromium oxide layer, restoring maximum corrosion resistance. | Chemical Finishing | Common for Stainless steel machining parts. |
 | Electroplating | The process that forms a thin metal layer on the surface, e.g.,nickel plating, chroming plating, zincing . | Coatings | Commonly used for metal parts, providing corrosion resistance, wear resistance, or appearance. |
 | Powder Coating | A dry powder is electrostatically applied and then cured under heat to form a hard, durable, decorative, and protective skin. | Coatings | Enhances durability and can add color or texture. |
 | PVD Coating | A vacuum deposition method to produce thin, extremely hard, and wear-resistant coatings, e.g., TiN, TiCN | Coatings | Common for tools and high-wear components. |
 | Surface Hardening | Techniques like carburizing or nitriding to harden the surface while maintaining a tough interior. | Heat Treatment | Increases wear resistance and lifespan of components. |
 | Electropolishing | An electrochemical process that removes a thin layer of material, enhancing the finish and reducing roughness. | Advanced & Specialized Finishes | Commonly used for stainless steel parts to improve corrosion resistance. |
