Elevate the quality and aesthetics of your parts with our precision polishing solutions.
Polishing at MEITESI is a precision finishing service that removes tool marks and micro-defects to achieve uniform gloss levels from satin to mirror. Using advanced polishing methods, we enhance appearance, reduce friction, and prepare surfaces for plating, anodizing, or coating. Suitable for metals such as aluminum, stainless steel, brass, and copper, our polishing ensures reliable quality for both prototypes and production.
Polishing refines machined surfaces by removing scratches, tool marks, and micro-burrs to reach a specified roughness and visual level—from uniform satin to high-gloss mirror. By smoothing surface asperities, it reduces friction and noise, improves mating and sealing behavior, and minimizes stress concentrators that can trigger cracks, enhancing wear, fatigue, and corrosion performance in service.
It also conditions the substrate for downstream finishing—creating clean, consistent surfaces that promote strong adhesion for plating, anodizing, coating, or bonding. Typical workflows combine staged abrasives with controlled pressure and feeds; critical faces can be masked and grain direction managed to protect tolerances and edges. Suitable for aluminum, stainless steel, brass, copper, and more, the process supports both prototypes and production parts.
| Features | Info |
|---|---|
Material | Stainless steel, aluminum, plastic, brass, copper, alloy steel |
Surface Finish | Ra 0.2μm |
Polishing Type | manual, mechanical, chemical |
Machining Marks | Removed on primary surfaces |
Texture | Mirror-like, glossy |
Polishing Service for CNC Machined Metal Parts helps CNC part buyers improve appearance, reduce visible tool marks, and prepare parts for cosmetic use or later finishing. MTSPi CNC reviews the machined geometry, material grade, tolerance-sensitive areas, cosmetic expectations, and inspection needs before recommending a finishing route.
This page is written for sourcing and engineering teams that need practical finishing decisions, not just a process name. Share drawings, material, quantity, finish standard, color or texture target, masking requirements, and critical dimensions with the RFQ.
| Buyer question | Why it matters | Practical action |
|---|---|---|
| Material compatibility | Confirm that the material and alloy can accept the finish reliably | Avoid adhesion, color, hardness, or corrosion problems |
| Dimensional impact | Review coating thickness, edge build-up, holes, threads, masking, and critical fits | Protect assembly dimensions after finishing |
| Appearance standard | Define visible faces, gloss, matte texture, color range, and acceptable marks | Keep cosmetic expectations realistic |
| Inspection needs | Select visual checks, thickness checks, hardness checks, adhesion tests, or sample approval as needed | Match evidence to part function and buyer risk |
Surface treatment should be planned before final machining whenever possible. Threads, bores, bearing fits, sealing faces, electrical contact areas, and cosmetic surfaces may need different handling. For repeat work, keep a finish sample, color reference, thickness target, and packaging instruction with the drawing revision.
What should I confirm before choosing this finish? Confirm material grade, part function, cosmetic standard, masking needs, tolerance-sensitive surfaces, expected environment, and inspection requirements.
Can MTSPi CNC machine and finish the same parts? Yes. MTSPi CNC can support machining, finishing coordination, inspection, and packaging so the finish plan matches the machined part requirements.
Will surface treatment affect dimensions? Some finishes add thickness, change edges, or affect holes and threads. Critical fits should be marked on the drawing and masking or post-finish checks should be discussed early.
