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Why do we need to apply wax to CNC machined parts before mirror polishing


In the realm of precision CNC machining, achieving a flawless mirror finish on machined parts is an art that goes beyond the mechanical precision of the machining process. One crucial step in the pursuit of perfection involves the application of wax before the mirror polishing stage. This seemingly simple practice carries profound implications for the final quality and aesthetics of CNC machined components.

Why do we need to apply wax to CNC machined parts before mirror polishing 1

The Role of Wax in Mirror Polishing:

Wax serves as a transformative agent in the mirror polishing phase. Its primary functions are manifold:


1. Filling Microscopic Imperfections:

Wax acts as a filler, settling into the microscopic imperfections on the machined surface. This creates a smoother foundation for the subsequent polishing process.


2. Heat Dissipation:

During the polishing phase, heat can be generated due to friction between the polishing tool and the part. Wax helps dissipate this heat, preventing any potential damage to the material.


3. Enhanced Lubrication:

The wax layer provides lubrication between the polishing tool and the machined part. This not only facilitates a more even polishing action but also prolongs the life of the polishing tools.


4. Preventing Over-Polishing:

Wax serves as a buffer, preventing over-polishing and ensuring that only the intended amount of material is removed during the polishing process. This is crucial for maintaining the precise dimensions of the machined part.



FAQ: Why is Mirror Polishing Important in CNC Machining?

Mirror polishing in CNC machining is a critical step for several reasons:


1. Aesthetic Appeal:

Mirror-polished surfaces exhibit a high-gloss finish, enhancing the visual appeal of machined parts. This is particularly important in applications where aesthetics matter, such as consumer electronics or luxury goods.


2. Corrosion Resistance:

A mirror-polished surface creates a barrier against corrosion by eliminating microscopic imperfections that could serve as initiation points for corrosion.


3. Hygienic Applications:

In industries like medical or food processing, mirror-polished surfaces are easier to clean and sterilize, ensuring optimal hygiene.


4. Improved Performance:

Certain applications, such as those in the automotive or aerospace industries, demand mirror-polished surfaces for improved aerodynamics and reduced friction.


In conclusion, the application of wax before mirror polishing in CNC machining is a meticulous practice that significantly contributes to the final quality and functionality of machined parts. It exemplifies the dedication to precision and excellence that defines our bespoke CNC machining services.

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