Start Free Quote

Machining Services

Molding Services

Fabrication Services

More

Solutions

NPI Solutions

Transform your idea into a market-ready product—faster, smarter, effortlessly.

Design & Engineering

Turn concepts into precision-engineered products with RapidDirect’s end-to-end expertise.

Verification Phase New

De-risk production with rigorous prototyping, testing, and manufacturability validation.

Mass Production New

Seamlessly scale validated prototypes into high-volume production with optimized processes and materials.

Packaging Phase New

Deliver your product safely and efficiently with professional, market-ready packaging solutions.

Service Packages New

Choose the ideal NPI package—from feasibility to mass production—to accelerate your go-to-market strategy.

Explore All Industries We Serve→
plane
Aerospace
electro
Electronics
medical
Medical Devices
car
Automotive
msgs
Communication
robotics
Robotics
semi
Semiconductor
energy
New Energy
consumer
Consumer Products

Blog

Gain valuable insights into manufacturing processes.

News

Company news, platform updates, holiday announcement.

eBooks

Improve manufacturing know-how with our eBooks collection.

Case Studies

Learn successful stories to inspire your project.

Surface Finishes

Select from 30+ surface finishing options.

Materials

Choose from 50+ metals and plastics for your project.

CNC Machining eBook

If you want to produce high-quality machined parts with a sleek appearance, it’s essential to consider some critical factors related to CNC machining. 

 

Here, we’ve gathered some basic information and important considerations to help you achieve the desired results.

Download

About RapidDirect

Our vision, mission, development history, and dedicated team.

Testimonials

Read what our customers say about their experience.

Quality Assurance

Discover how we ensure precision and quality in manufacturing

rapiddirect-office-1

Online Platform

Get Instant quotes with our smart online platform.

Teamspace

Updated teamspace feature with membership rewards.

RapidDirect upgraded teamspace

Contact us for your manufacturing needs.

  • Building A12, Haosi Industrial Park
    Nanpu Road, Xinqiao Street, Bao'an District
    Shenzhen, China, 518104
  • +86 0755-85276703
    +86 13714567885
  • [email protected]
Contact Now
From Prototype to Mass Production — Seamlessly banner

Surface Finishes
We Offer

High-quality surface finishing services improve your part’s aesthetics and functions regardless of the manufacturing process used. Deliver quality metal, composites, and plastic finishing services so you can bring the prototype or part you dream of to life.
Order Your Parts
1
2
3
Surface FinishesDescriptionServicesApplicable Materials
al6061 machined surface ra1.6As Machined Standard finish, surface roughness of 3.2 μm (126 μin), removes sharp edges and deburs parts cleanly.CNC machining, Sheet metal fabricationMetals, Plastics
al6061 sandblasted matte hard clear anodized 120Sand Blasting Powerfully propels blast media against surfaces to remove coatings and impurities.CNC machining, Sheet metal fabricationMetals, Plastics
al6061 polished ra0.8Tumbling Utilizes barrel or vibratory processes with abrasives to smooth and polish the surface of parts.CNC Machining, Sheet metal fabricationMetals, Plastics, Glass
sus304 polished vacuum plated silver dElectropolish Electrochemical process that smoothens, polishes, and deburrs metal surfaces to a high gloss.CNC machiningStainless steel, Copper, Aluminum
al6061 hard anodized black semi glossHeat Treatment Alters the physical (and sometimes chemical) properties of a material to achieve desired mechanical properties.CNC machiningMetals
al6061 machined surface ra3.2 colored alodineAlodine Chemical treatment process providing corrosion protection and surface preparation for paint adhesion.CNC machining, Sheet metal fabricationAluminum, Aerospace Alloys
al6061 hard anodized clear semi glossAnodizing Electrochemical process that forms a durable, corrosion-resistant oxide layer on the surface of metals.CNC Machining, Sheet metal fabricationAluminum
al6061 hard anodized black ptfe sealed semi glossTeflon Coating Applies a protective layer of PTFE to reduce friction and enhance corrosion resistance.CNC machining, Sheet metal fabrication, Injection moldingMetals, Plastics
al6061 powder coated black flat semi glossBlack Oxidize Chemical bath that creates a black oxide coating on metal to improve corrosion resistance.CNC machining, Sheet metal fabricationSteel, Iron
al6061 powder coated white flat glossy medicalElectroless Plating Deposition of a metal coating on substrates using an autocatalytic chemical process.CNC machining, Injection molding, 3D printingMetals, Plastics
sus304 polished electroplated rose gold rElectroplating Uses electric current to reduce dissolved metal cations to form a coherent metal coating.CNC machining, Sheet metal fabricationMetals
al6061 painted white glossyPainting Application of paint for aesthetic improvements and protective coatings.CNC machining, Sheet metal fabrication, Injection molding, 3D printingMetals, Plastics, Wood
sus304 polished color zinc rPassivation Chemical treatment to enhance the corrosion resistance of metals by removing free iron from the surface.CNC machining, Sheet metal fabricationStainless Steel, Other Corrosion-resistant Alloys
al6061 powder coated white textured glossyPowder Coating Dry finishing process using powdered paint to provide a high-quality, durable finish.CNC machining, Sheet metal fabrication, Injection moldingMetals, Some Plastics
al6061 powder coated black textured semi glossElectrophoresis Coating process using charged particles suspended in a solvent, typically for uniform finishes.CNC machining, Sheet metal fabricationMetals, Ceramics
al6001 sandblasted semi gloss blue anodized 120Brushed Finish Mechanical polishing that produces a unidirectional satin finish.CNC machining, Sheet metal fabricationMetals
peek beige ra3.2SPI Finish SPI Finish standardizes surface textures on plastic parts, offering finishes from high-gloss to matte, ensuring consistent aesthetics and functionality in injection molding.Injection moldingPlastics
sus304 polished vacuum plated silver rPolishing Smooths the surface to a bright, reflective finish; removes minor scratches and imperfections for aesthetic or functional purposes.CNC machining, Sheet metal fabricationMetals , some hard plastics

Perfect Your Project's Finish

Your designs deserve the best. Enhance durability and appeal with our various finishing options. Part surfacing finishing techniques can either be for functional or aesthetic purposes. Each technique has requirements, such as materials, color, texture, and price. Step up the quality of your projects today!
Start Your Project
Mask group1

Recent Blog Posts

dfm oursource
BLOG CATEGORY 1

The Value of DFM: Why Outsourcing Design for Manufacturability Saves Time and Money

You have validated the functionality of your prototype, but now you are staring at a five-figure tooling quote and wondering...
January 15, 2026
Read More
die casting companies 7
Die Casting

Best 7 Die Casting Companies for Rapid Prototyping

You need metal parts that perform like production components, but you can’t wait six weeks for traditional tooling. It’s a...
January 14, 2026
Read More
vacuum casting companies
Vacuum Casting

Finding the Right Partner: 5 Top Vacuum Casting Companies for High-Fidelity Prototypes

Choosing a vacuum casting supplier isn’t just about price or lead time—it directly affects how accurate your prototype really is....
January 13, 2026
Read More

FAQs

RapidDirect is proficient in facilitating the production and prototyping of large machined parts, be it metal or plastic. We boast a substantial CNC machining build envelope measuring 2000 mm x 1500 mm x 300 mm. This ensures we can accommodate even sizable parts, including those tailored for furniture or architectural applications.

RapidDirect is proficient in facilitating the production and prototyping of large machined parts, be it metal or plastic. We boast a substantial CNC machining build envelope measuring 2000 mm x 1500 mm x 300 mm. This ensures we can accommodate even sizable parts, including those tailored for furniture or architectural applications.

RapidDirect is proficient in facilitating the production and prototyping of large machined parts, be it metal or plastic. We boast a substantial CNC machining build envelope measuring 2000 mm x 1500 mm x 300 mm. This ensures we can accommodate even sizable parts, including those tailored for furniture or architectural applications.

Try RapidDirect
now, for free
Start Free Quote
Book a meeting with RapidDirect
Note: Our working hours are 10:00-12:00, 14:00-18:30, and 20:00-23:00. We will confirm the time and meeting method with you via email.
Click or drag files to this area to upload. You can upload up to 50 files.