Custom CNC Milled Parts — Quality Work, Factory Price

We machine aluminum, stainless steel, brass, and plastics — with great accuracy and smooth finish. You’ll get solid parts, fair price, and no surprises.

See What We Can Mill

Here are just a few examples of custom CNC-milled parts we’ve produced — from housings to fixtures, in both metal and plastic.

Perfect for Plates, Brackets, and Housings

Flat parts with holes, pockets, or slots — all milled to spec.

Thin Walls and Tight Hole Spacing? We Handle It.

We keep precision and strength, even on delicate aluminum parts.

Multi-Face and 5-Axis Machining

We handle angled cuts, deep pockets, and complex contours.

Consistent Accuracy on Every Part

Tolerances down to ±0.01 mm, even for prototypes or complex jobs.

Wide Range of Materials Supported

Aluminum, steel, copper, engineering plastics — all handled in-house.

Trusted in Precision Applications

Milled parts used in automation, electronics, instruments, and enclosures.

Why Clients Trust Us

We make complex parts simple.
From thin walls to deep pockets, we’ve seen it all — and we’ve done it well.

Small runs or big orders — we handle both.Whether it’s 5 pieces or 5,000, you’ll get the same attention to detail.

Stable quality, direct from our factory.
We’re not middlemen — our in-house team controls every step, from machining to inspection.

Fair pricing, no surprises.
As a CNC shop with 10+ years experience, we know how to deliver real value without the guesswork.

Send us your file to get started.

How to Work With Us

1
Tell Us What You Need

Send us your CAD file and part requirements — materials, quantity, tolerance, and surface finish.

2
Get a Quote

Receive a detailed quotation within 24 hours, customized to your exact needs. We’ll confirm technical specs with you before moving forward.

3
Start Production

After sample approval and deposit, we begin mass production. All parts are inspected, packed, and shipped to your destination.

CNC Parts Customization Can Be Easy & Safe

Whether it’s a simple bracket or a complex 5-axis part, we’ve helped clients turn ideas into solid components — accurately, reliably, and at factory pricing.
Just upload your drawing, and we’ll get back with a tailored solution and quote — usually within 12 hours.

We’ll get back to you ASAP!

CNC Milling Services – What You Need to Know

Table of Contents

What Is CNC Milling?

CNC milling is a subtractive manufacturing process that uses rotary cutting tools to remove material from a solid block.
The entire process is guided by computer programs (G-code), which control how the machine moves, how fast it cuts, and how deep it goes.

With 3-axis, 4-axis, and 5-axis machines, we can create everything from flat brackets to complex multi-surface components — in both metal and plastic.

It’s fast, precise, and ideal for prototyping or production.

Materials We Work With

We support a wide range of metal and plastic materials — if it can be machined, we’ve probably worked with it. Material certifications are available upon request.

Material Common Applications Compatible Surface Finish
Aluminum (6061, 7075) Brackets, enclosures, heat sinks Anodizing, sandblasting, powder coating
Stainless Steel (304, 316) Medical parts, tools, outdoor components Polishing, passivation, electropolishing
Carbon Steel Structural and mechanical components Black oxide, zinc plating
Brass Connectors, decorative parts, valves Polishing, nickel plating
Copper Heat exchangers, electrical contacts Coating, electropolishing
Alloy Steel High-strength components, tooling Heat treatment, black oxide
POM (Delrin) Bushings, gears, wear-resistant parts As-machined, polishing
ABS / PC Prototypes, housings, enclosures Painting, vapor polishing
Nylon (PA6, PA66) Insulating parts, gears, wear components As-machined, surface coating

Not sure which material is best for your part? Just tell us what it’s for — we’ll help you choose the right one.

Surface Finishing Options

As-Milled – Tool marks may be visible. Fastest and most cost-effective finish. Ra ~3.2μm / 125 μin.

Bead Blasted – Matte, uniform surface achieved using glass bead blasting. Removes minor tool marks.

Anodized (Type II) – For aluminum parts. Available in clear, black, red, blue, and more. Offers corrosion resistance and color.

Anodized (Type III – Hardcoat) – Thicker, wear-resistant anodizing layer. Ideal for parts needing high durability.

Powder Coated – Tough, colored finish for visual and corrosion protection. Suitable for aluminum and steel.

Brushed Finish – Linear grain for stainless steel or aluminum

Electropolishing – Smooth, bright finish for stainless steel

Black Oxide – Mild corrosion protection for steel

Nickel Plating / Zinc Plating – Enhanced appearance and wear protection

Mirror Polishing – High-gloss surface for cosmetic or medical-grade parts

Tolerance Standards

We follow ISO 2768 standards for CNC milling. Standard tolerances are listed below. For tighter tolerances or critical features, please provide 2D drawings with specific GD&T callouts.

Limits for nominal size Plastics (ISO 2768-m) Metals (ISO 2768-f)
0.5mm to 3mm ±0.10mm ±0.05mm
Over 3mm to 6mm ±0.10mm ±0.05mm
Over 6mm to 30mm ±0.20mm ±0.10mm
Over 30mm to 120mm ±0.30mm ±0.15mm
Over 120mm to 400mm ±0.50mm ±0.20mm
Over 400mm to 1000mm ±0.80mm ±0.30mm

*For nominal sizes below 0.5mm, please indicate required tolerances on your drawing.

Minimum Feature Size 0.5 mm (depends on material and geometry)
Surface Finish Standard Ra 3.2 μm (125 Ra). Finer finishes available upon request.
Threading Standard metric and imperial threads supported. Custom threads available upon request.
Edge Condition All sharp edges will be deburred unless otherwise specified.

Industries We Serve

Our CNC milled parts are used across a wide range of industries — from mechanical equipment to electronics. Whether it’s for structure, enclosure, or precision assembly, we deliver parts that perform.

Automation & Machinery

We produce structural brackets, plates, and mounts for industrial systems and robots.

Electronics

Our milled enclosures and heat sinks are used in consumer electronics and test equipment.

Medical Devices

Aluminum and plastic parts for diagnostic tools, lab machines, and custom fixtures.

Instrumentation

 Precision-milled housings and components for meters, sensors, and control units.

Why CNC Milling Is Still a Top Choice

High Precision

CNC milling delivers excellent dimensional accuracy — great for functional parts, not just looks.

No Molds Needed

No need to invest in tooling — perfect for prototyping, low to mid-volume runs, or custom designs.

Fast Turnaround

Once the design is ready, machining starts quickly. No waiting weeks for molds or tooling setup.

Supports Many Materials

From aluminum and stainless steel to plastics like POM and ABS — CNC milling handles them all.

How CNC Milling Works

CNC milling uses pre-programmed code to guide a rotary cutting tool that removes material from a solid block — with precise control over motion, speed, and depth.

G-code & Automation
The whole process starts with a digital design (usually STEP or STL file), which is converted into G-code — a language that tells the machine exactly where and how to move

Subtractive Cutting
Unlike 3D printing, CNC milling removes material from the block. Tools rotate at high speed and gradually carve the part, one surface or cavity at a time.

 Multi-Axis Control
With 3-axis, 4-axis, or 5-axis machines, we can access complex angles, multiple surfaces, and deeper features — all without manual repositioning.

In-Process Checks
To ensure accuracy, we often pause between tool changes or roughing/finishing passes to inspect dimensions, adjust offsets, or switch tools.

CNC milling is reliable, repeatable, and incredibly versatile. It works well for both one-off prototypes and full production — with excellent part consistency.

CNC Mills vs. CNC Routers

CNC mills and CNC routers may look similar, but they serve different purposes. Mills are more rigid and better suited for high-precision cutting of dense materials. In contrast, routers are typically used for softer materials like wood or plastic panels, where high-speed shaping is needed but tight tolerances are less critical.

If your project requires strong materials, tight tolerances, or repeatable accuracy, CNC milling is often the better choice.

CNC Milling vs. CNC Routing — What’s the Difference?

CNC Mills
  • Designed for metal and engineering plastics

  • Built with rigid structure for high cutting forces

  • Uses precision ball screws and servo motors

  • Supports 3-axis, 4-axis, and 5-axis for complex parts

  • Great for tight tolerances and functional components

CNC Routers
  • Usually for wood, foam, acrylic, or light plastic

  • Lightweight frame, less rigid

  • Uses belt drives or lower torque motors

  • Good for fast shaping, but not for high-precision metal parts

  • Typically used in sign-making, furniture, or soft material work

If your part needs to be made from aluminum, stainless steel, or high-strength plastic — with tight tolerances and repeatability — CNC milling is the right choice.

3-Axis, 4-Axis, and 5-Axis CNC Milling

We support 3-axis, 4-axis, and 5-axis CNC milling — so no matter how simple or complex your part is, we can machine it accurately and efficiently.

3-Axis Milling
The cutting tool moves along X, Y, and Z directions. Ideal for flat parts, holes, slots, and simple geometries.
Most common setup — great for general components.

4-Axis Milling
Adds a rotating axis (usually A or B), allowing the part to be rotated for machining multiple sides without manual repositioning.
Efficient for cylindrical parts or parts with features on multiple faces.

5-Axis Milling
Adds two rotational axes — enabling the tool to approach the part from virtually any direction. Perfect for complex geometries, undercuts, and precision surfaces.
Best for aerospace, medical, or mold-grade parts.

In Summary

CNC milling is one of the most reliable and flexible ways to make custom parts — and we’ve been doing it for over 10 years.

From simple brackets to complex multi-axis components, we’ve helped clients worldwide get the parts they need — accurately, affordably, and on time.

If you’ve got a part in mind, we’d love to help bring it to life.

CNC Milling Done Right

Need precise parts? We machine simple and complex designs with ±0.005mm accuracy, right here in our own factory.
Our 5-axis machines and QC process keep things on track — so you get solid parts, at fair pricing, fast.

Upload your file, and we’ll send you a quote within 12 hours.

Start A New CNC Quote

We usually reply within 12 hours — no spam, no pressure.

FAQ — You Might Be Wondering

What file types do you accept?

STEP (.stp), IGES (.igs), STL, PDF, DWG — whatever you’ve got, we can probably work with it.

We’re flexible — small runs are welcome, and we can scale up to thousands of parts.

Prototypes usually take 5–7 working days. Larger orders may vary, depending on complexity.

Yes, we can hold ±0.005mm for CNC milling — and even tighter if needed. Please include a drawing.

Yes, full inspection reports are available upon request — including CMM and thread gauges.

Yes — we can do a sample before mass production. Just let us know your requirements.

Can you sign an NDA?

Absolutely. Your design is safe with us. We’re happy to sign your NDA or send ours.

We machine aluminum, stainless steel, mild steel, brass, copper, and many plastics like POM and ABS.

Bead blasting, anodizing, black oxide, powder coating, brushing, polishing, and more.

Bank transfer (T/T), PayPal, and Western Union. OA credit is available for long-term partners.

Yes, we ship worldwide by DHL, FedEx, UPS, or by sea — based on your preference.

Just upload your drawing and tell us your material, quantity, and any special requests. We’ll reply within 12 hours.

Still unsure?
No worries — just send us your part drawing, and we’ll figure it out together.

Ask For a Quick Quote

Please send your drawings and detailed requirements to:

Email: sales@moonparts.com

Or simply fill out the contact form below — we will get back within 12 hours.