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Our brushing process gives your parts a refined satin look while ensuring dimensional accuracy, repeatability, and exceptional visual appeal.
Brushed finish is a surface treatment that creates fine, consistent linear textures on metal surfaces by using abrasive belts or brushes. This process removes surface imperfections, improves appearance, and provides a satin-like, directional finish.
Utilizes rotating cutting tools for high-precision machining of flat surfaces, curves, and complex parts, ideal for mold making, aerospace, and automotive industries.
Uses rotating workpieces and cutting tools for efficient machining of cylindrical components, widely applied in shafts, discs, and precision parts manufacturing.
Enables multi-angle precision cutting, reducing setups and machining complex surfaces, perfect for high-end aerospace, medical devices, and precision mold manufacturing.
| Type | Features | Applications | |
 | Straight Brushed | Most common type; consistent linear grain; uniform direction | Consumer electronics, decorative trims, automotive panels |
|---|---|---|---|
 | Cross Brushed | Grain formed by two perpendicular directions; stronger texture | Industrial parts, functional components needing grip |
 | Fine Satin Brushed | Very fine grain; softer matte visual; premium appearance | Luxury consumer products, medical device housings |
 | CD Circular Brushed | Circular "disc-shaped" pattern; strong visual highlight | Knobs, rotary dials, control buttons |
 | Random Brushed | Irregular, non-directional grain; softer diffuse reflection | Decorative hardware, appliance housings |
Typical brushing issues and how to avoid them.
Cause: Inconsistent brushing pressure or unstable feed rate
Impact / Prevention:
Cause: Part re-positioned incorrectly during multi-side brushing
Impact / Prevention:
Cause: Too low grit (#80–#120) or too slow feed causing deep scratches
Impact / Prevention:
Cause: Excessive pressure causing the grain to flatten or shine
Impact / Prevention:
| 01 | Pre-Deburring & Surface Preparation Removing burrs, sharp edges, and machining marks to ensure uniform contact during brushing. Notes: Ensures stable brushing pressure and prevents random scratches. Standards: In-house BF-SOP-01; |  |
| 02 | Surface Leveling (Initial Sanding) Flattening the surface using coarse abrasive belts to eliminate tool marks, end-mill patterns, and uneven areas. Notes: Provides a consistent base to achieve uniform grain texture. Standards: In-house BF-SOP-02; |  |
| 03 | Primary Brushing Pass Applying controlled force and constant feed speed to create the initial linear grain pattern. Notes: Determines grain depth, direction, and overall texture quality. Standards: In-house BF-SOP-03; |  |
| 04 | Fine Brushing / Grain Refining Using finer belts or brush wheels to refine the grain, improving the satin effect and surface smoothness. Notes: Achieves the final appearance and reduces micro-scratches. Standards: In-house BF-SOP-04; |  |
| 05 | Cleaning & Degreasing Thorough cleaning to remove brushing dust, abrasive residue, and oils. Notes: Prevents contamination before storage or additional finishing. Standards: In-house BF-SOP-05; |  |
Applied on dashboards, trim panels, knobs, and decorative strips to deliver a refined matte metallic appearance.
Provides consistent surface texture for structural and non-structural components, improving aesthetics and corrosion-resistance prep.
Ideal for stainless steel and aluminum housings—clean matte texture, easy to sterilize, and resistant to visible fingerprints.
Used on machine covers, handles, and precision parts to achieve uniform grain and reduce glare in operational environments.
Avoid deep machining marks or tool chatter
Maintain consistent surface flatness
Large surfaces require uniform material removal
Avoid sudden height transitions
Prefer brushing direction parallel to longest side
Typical brushed finish parameters for CNC machined parts:
| Parameter | Typical Range | Description |
| Abrasive Grit | #80 – #600 | Determines grain coarseness; lower grit = rougher texture |
| Surface Roughness | Ra 0.4 – 1.2 μm | Roughness depends on grit selection & brushing speed |
| Grain Depth | Variable (controlled) | Defined by abrasive grit and feed rate during brushing |
| Brushing Direction | Linear / Cross / Circular | Grain pattern selected based on design & application |
| Max Part Size | Based on equipment capability | Large flat surfaces may require wide-belt brushing |
| Material Compatibility | Aluminum / Stainless Steel / Steel / Brass | Most metals suitable for mechanical brushing |
For parts requiring consistent aesthetics, maintain the same grit and brushing direction across all surfaces.
For aluminum, finer grits (#320–#600) provide a premium satin finish.
For stainless steel, coarser grits (#120–#240) are commonly used for visible grain.
10+ years experience in precision surface finishing
Controlled brushing process ensures consistent texture
Full inspection & traceability
One-stop CNC machining + finishing
Support for prototypes and mass production
Send us your part files or design drawings. Our surface finishing experts will evaluate the part geometry, surface requirements, and production volume and recommend the ideal machining process for your CNC machined parts.
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