Discover the 15+ surface finishing options available for your CNC projects.
Our standard finish is “as machined.” All sharp edges are removed and deburred for safe handling. Tool marks are visible.
Chemical finishes are used to increase a part’s durability, improve thermal stability, alter conductivity level or extend its life span.
| Material Compatibility | Colour | Description | |
|---|---|---|---|
| Anodizing | Aluminium, titanium | Gold, red, blue, black, clear, etc. | Anodising is used to increase surface hardness, wear resistance and the lifespan of metals like Aluminium. |
| Alodine | Aluminium | Clear, yellow | Alodine is a chromate conversion coating applied to improve corrosion resistance and help preserve electrical conductivity. |
| Black Oxide | Steel, copper, aluminium, etc. | Heavy black | Black oxide is a coating used to improve corrosion resistance and minimize light reflection. |
| Electroplating | Metals & plastics | Metallic | Electroplating is used for maintenance or purely decorative purposes. We can coat your parts in chrome, zinc, nickel, etc. |
| Electroless Nickel Plating | Steel, stainless steel, copper, etc. | Silver white semi-bright | Electroless nickel plating is a smooth and uniform coating that offers very good wear, abrasion and corrosion resistance. |
| Passivation | Stainless steel | Very light blue | Passivation is used to enhance the corrosion resistance of CNC metal parts, especially of stainless steel components. |
Mechanical finishing is a process that involves generation of different-looking surface textures on metal by buffing, brushing, tumbling. or bead blasting the surface.
| Material Compatibility | Colour | Description | |
|---|---|---|---|
| Bead Blasting | Metals & Plastics | Raw material colour | Glass bead blasting adds a uniform matte or satin surface finish. It’s great for removing tool marks and surface contaminants. |
| Brushing | Metals | N/A | Brushing is produced by polishing the metal grit resulting in a unidirectional satin finish. |
| Powder Coating | Metals | Black, RAL/Pantone colours | Powder coating is a dry finishing process that results in a smooth finish and creates a hard finish that is tougher than conventional paint. |
| Painting | Metals & plastics | Black, RAL/Pantone colours | Painting is a well-known way to add colour. Overall, it is a great choice to improve the aesthetics of cnc machined parts. |
| Polishing | Metals & plastics (especially PMMA) | N/A | We can hand polish your CNC metal and plastic parts to achieve a smooth finish. It creates a slightly reflective surface. |
| Sandblasting | Metals & plastics | Raw material colour | Sandblasting adds a uniform matte or satin surface finish. It’s mainly used for visual purposes and comes in several different grits. |
| Spray Painting | Metals & plastics | Black, RAL/Pantone colours | Spray painting is a great way to add colour. It is more durable and provides a more even surface than traditional painting. |
| Smoothing | Metals & plastics | N/A | Smooth machining can be applied to the part to reduce its surface roughness. Machine marks are less evident but still visible. |
This list features common CNC finishes. For other custom finishes, such as as water transferring and more, please contact us at info@hlhrapid.com.
Discover the 15+ surface finishing options available for your CNC projects.
