Surface Finishing for CNC Machining & Sheet Metal

Surface Finishing Processes

Optimizing Manufacturing Efficiency: A Guide to Computerized Numerical Control (CNC) Machining Surface Finishes

Why we Need Surface Finishing in CNC Machining When it comes to CNC machining, surface finishing plays an essential role in boosting corrosion resistance, promoting cleanliness and hygiene, boosting productivity, preserving quality control, and improving appearance. It assists in converting rough machined parts into polished, useful, and aesthetically pleasing parts that satisfy the required standards and client expectations. To be specific, surface finish has a big impact on a product's aesthetic app......

Dec 28, 2023

Surface Finishing Processes

How to choose between Laser marking and UV printing?

Choosing between laser marking and UV printing for CNC machining service depends on various factors, including the specific requirements of your project. Here are some considerations to help you make an informed decision: (Left: Laser Marking/Right：UV Printing) Material Compatibility: Laser Marking: Works well on a wide range of materials, including metals, plastics, ceramics, and more. It provides high precision and is suitable for detailed markings. UV Printing: Works well on a wide range of materia......

Dec 29, 2023

Surface Finishing Processes

Acrylic Polishing Guide: How to Achieve a Clear, Smooth Acrylic Finish

Technician inspecting a clear acrylic sheet under factory lights to check surface polish quality. Acrylic polishing is a critical surface finishing process used to improve the clarity, appearance, and performance of CNC machined acrylic (PMMA) parts. From simple hand polishing to machine polishing and industrial CNC acrylic polishing, different methods produce very different surface finishes, consistency levels, and risks such as heat buildup and acrylic cracking. This guide explains what acrylic poli......

Jan 20, 2026

Surface Finishing Processes

EMI/RFI Shielding for CNC Machined Parts: Methods, Materials & Conductive Surface Finishes

EMI/RFI shielding in CNC-machined parts refers to the use of conductive materials, surface finishes, and enclosure design to block, absorb, or redirect electromagnetic interference, ensuring stable performance of sensitive electronic systems. Unlike sheet metal or molded plastic housings, CNC-machined components require tailored shielding solutions due to tighter tolerances, complex geometries, and precision grounding requirements. Electronic systems are becoming increasingly compact, faster, and more......

Jan 14, 2026

Surface Finishing Processes

What Is Deburring? The Ultimate Guide to Deburring Tools & Deburring Machines

A machined part may look complete, but sharp edges and raised material often remain after cutting. These defects are called burrs. Deburring is the manufacturing process used to remove them and bring a part to its final, usable condition. Burrs might seem small, but they can cause big headaches. Metal parts before and after deburring on an industrial conveyor belt finishing machine Deburring is the manufacturing finishing process of removing burrs—unwanted sharp edges or raised material—from machined ......

Jan 07, 2026

Surface Finishing Processes

What is Bead Blasting Finish in CNC? A Complete Guide

When you think about CNC machining, precision and accuracy usually steal the spotlight. But surface finish is just as important. It's what the customer actually sees and feels, and in many cases, it's what determines whether a part looks “shop-made” or truly professional. A rough, uneven surface can undermine all the engineering effort that went into a design. If you’d like a deeper dive into all the options, check out our guide on surface finishes in CNC where we break down the pros and cons of each ......

Sep 13, 2025

Surface Finishing Processes

CNC Machining Surface Roughness: A Practical Guide

Why Surface Roughness Matters in CNC Machining When we talk about CNC machining, precision isn't just about hitting the right dimensions, it’s also about how the surface feels and performs. Surface roughness describes the fine irregularities left on a machined surface, and it directly impacts how a part behaves in the real world. So, what is surface roughness? In simple terms, it's the measure of tiny peaks and valleys created by the cutting process. While they might look smooth to the naked eye, thes......

Aug 31, 2025

Surface Finishing Processes

Surface Finish in Machining, Types, Charts & Testing

What is Surface Finish in Machining? At its core, surface finish in machining refers to the small-scale irregularities left on the surface of a part after machining. These irregularities are typically grouped into three categories: Roughness: The fine, closely spaced deviations caused by the cutting process itself. Roughness depends heavily on feed rate, tool sharpness, and cutting speed. Waviness: Larger, more widely spaced variations caused by machine tool vibration, deflection, or thermal distortio......

Aug 25, 2025

Surface Finishing Processes

The Role of Surface Finish in CNC Machining

In modern manufacturing industry, CNC machining technology has become one of the core processes for producing complex parts by virtue of its high precision and flexibility. And in the process of CNC machining, surface finish is one of the important indicators of part quality. It not only affects the appearance of parts, but also has a profound impact on the performance, service life and reliability of parts. In this paper, we will discuss the role of surface finish in CNC machining, analyse its impact......

Surface Finishing Processes

Understanding the role of surface finish in CNC machining: how to improve part performance and life?

In precision manufacturing, surface finish is one of the core indicators of CNC machining quality, directly affecting part friction performance, sealing, corrosion resistance and fatigue life. Whether it's aerospace gears or medical implants, precise control of surface roughness (Ra value) has become the key to breaking through technological barriers. In this article, we will analyse the definition of surface finish, influencing factors and optimisation strategies, and share how to achieve the ultimat......

Surface Finishing Processes

Explanation of different material surface treatment technologies in CNC machining

I. Introduction In the process of CNC machining, surface treatment technology is crucial. It not only affects the appearance quality of the part, but also directly relates to the performance and durability of the part. Whether it is to improve corrosion resistance or enhance the wear resistance of parts, surface treatment plays a key role in the whole manufacturing process. Through the appropriate surface treatment technology, you can significantly improve the service life of the product and work effi......

Surface Finishing Processes

How to Achieve a Mirror-Finish on CNC-Machined Parts

Achieving a mirror finish on CNC-machined parts is essential in many industries, from aerospace to custom manufacturing. A flawless, reflective surface enhances both the aesthetics and functionality of parts. In this article, we’ll explore the methods that can help you achieve a mirror-like finish. What Is a Mirror Finish? A mirror finish is a highly reflective surface that minimizes light scattering, often with a surface roughness of Ra 0.2 microns or lower. Achieving this level of gloss requires pre......

Nov 26, 2024

Surface Finishing Processes

What is Surface Roughness Value

Surface roughness value is a measure of the irregularities and deviations present on the surface of a machined part. It is defined as the arithmetic average of the deviations of the roughness profile from a mean line. Surface roughness values are typically expressed in micrometers (μm) or microinches (μin). What is the effect of surface roughness on the workpiece? The surface roughness of a workpiece can have a significant impact on its performance, functionality, and durability. Here are some effects......

Dec 27, 2023

Surface Finishing Processes

What is the difference between different mesh number

In the context of bead blasting in CNC services, the terms "80 mesh," "100 mesh," "120 mesh," and "150 mesh" refer to different grit sizes or particle sizes of the blasting media used in the process. The mesh size indicates the number of openings per linear inch in a sieve through which the blasting media passes. Here's a general overview of the differences: 80 Mesh: Larger particle size. Removes heavy coatings, rust, and contaminants more aggressively. Leaves a coarser finish on the material being bl......

Dec 27, 2023

Surface Finishing Processes

Anodizing vs. Hard Anodizing: The Differences in Surface Treatment Techniques

In modern CNC machining, surface treatment techniques are indispensable for elevating the performance and longevity of metal components. Among these, anodizing and hard anodizing stand out as common methods, each offering unique processing advantages and distinct product characteristics. What is Anodizing Anodizing is an electrochemical process that increases the corrosion resistance and wear resistance of a metal surface by forming an oxide layer. This process is commonly performed on metals such as ......

Dec 27, 2024