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Precision CNC Metal Milling: Your Complete Guide to Custom Metal Parts

At Istar Machining, we provide top-quality CNC metal milling services that turn your designs into real metal parts with amazing accuracy. Our expert team uses the latest technology to create parts that fit your exact needs.

CNC Machining Parts

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Supports uploading of the following file formats: .STEP .STP .SLDPRT .STL .IPT .3MF .3DXML .PRT .SAT .DXF .X_T .X_B .JT .CATPART

20+ Years

Istar Machining's years in the industry

300,000 square feet

The size of Istar Machining's factory

300 CNC machines

Our CNC equipment count

1000 skilled workers

Istar's number of skilled machinists/operators

What is CNC Metal Milling?

CNC metal milling is a way to make metal parts using computer-controlled machines. These machines use spinning cutting tools to remove metal from a block until the perfect shape is made. This method is very accurate and can make complex parts that would be hard to make by hand.

![CNC Metal Milling Machine in action]

Why Choose Istar Machining for Your CNC Metal Milling Needs?

  • High-quality results every time
  • Fast turnaround times for both small and large orders
  • Competitive pricing with no hidden costs
  • Expert team with years of experience
  • Advanced machinery for complex parts
  • Wide range of materials to choose from

Our CNC Metal Milling Capabilities

We have put together this helpful table to show you what our machines can do:

Machine Specs

What This Means For You

Spindle Power: 5–30 HP

Powerful enough to cut through the hardest metals

Accuracy: ±0.001″–0.005″

Your parts will fit perfectly every time

Materials: Aluminum, Stainless Steel, Titanium

Wide selection for your specific needs

Axis Configuration: 3/4/5-axis

Can create simple or very complex shapes

Software: Mastercam, Fusion 360

Top-quality design tools for perfect results

Max Workpiece Size: 60″ x 30″

Can handle both small and large parts

Tooling: Carbide end mills

Long-lasting tools that make clean cuts

Speed: 15,000 RPM spindles

Fast production without losing quality

Coolant Systems: Through-spindle

Better cuts and longer tool life

Certifications: ISO 9001, AS9100

Guaranteed quality standards

Materials We Work With

At Istar Machining, we can mill almost any metal you need:

  • Aluminum (6061, 7075) – Light but strong, great for many uses
  • Stainless Steel – Strong and doesn’t rust
  • Titanium – Very strong but lightweight
  • Brass – Good for electrical parts
  • Copper – Excellent for heat transfer
  • Steel – Strong and cost-effective
  • Exotic Alloys – For special high-performance needs

Need help picking the right material? Check out our guide on aluminum CNC machining or steel CNC machining for more details.

Industries We Serve

Our CNC metal milling services help many different industries:

Aerospace

We make parts that meet strict aerospace standards. These parts must be perfect and reliable for aircraft safety.

Want to know more? Visit our aerospace CNC machining page.

Automotive

We make engine parts, transmission components, and custom car parts that last long and work well.

Medical

Our clean, precise parts meet strict medical standards. We make surgical tools and medical device parts.

Energy

We create durable parts for oil, gas, and renewable energy that stand up to tough conditions.

Defense

Our secure processes ensure your defense projects meet all regulations and security needs.

Types of Parts We Can Make

Our 5-axis CNC milling capabilities let us make nearly any metal part you can design:

  • Engine blocks and components
  • Custom brackets and fittings
  • Surgical instruments
  • Aerospace components
  • Molds and dies
  • Prototypes
  • Custom machine parts
  • Hydraulic components

The CNC Metal Milling Process at Istar Machining

  1. Design Review: We look at your design files and suggest any changes that might help
  2. Material Selection: We help you pick the best metal for your needs
  3. Programming: Our experts program the CNC machine for your specific part
  4. Setup: We carefully set up the machine and materials
  5. Milling: The CNC machine cuts your part with amazing accuracy
  6. Quality Control: We check every part to make sure it meets your requirements
  7. Finishing: We can add special finishes like anodizing or polishing
  8. Delivery: Your parts are carefully packaged and shipped to you

Benefits of CNC Metal Milling

Precision and Accuracy

Our machines can make parts with very tight tolerances (±0.001″), so everything fits perfectly.

Complex Designs

With our 5-axis machining capabilities, we can make parts with complex curves and shapes that other methods can’t match.

Material Options

We can mill almost any metal, giving you freedom to choose the perfect material for your project.

Cost-Effective

For small to medium batches, CNC milling is often less expensive than other manufacturing methods.

Fast Turnaround

Need parts quickly? Our efficient process can deliver high-quality parts fast.

Common Applications for CNC Metal Milled Parts

Industry

Common Applications

Why CNC Milling Works Best

Aerospace

Turbine blades, landing gear

High precision with special alloys

Automotive

Engine blocks, transmission

Durable parts that can handle stress

Medical

Surgical tools, implants

Ultra-clean finish for safety

Energy

Valves, turbine housings

Corrosion-resistant materials

Prototyping

Test models, proof of concept

Quick turnaround for testing

Defense

Secure components, enclosures

Meets strict military standards

When to Choose CNC Metal Milling

CNC metal milling is perfect when you need:

  • Complex shapes that other methods can’t make
  • Tight tolerances for parts that must fit perfectly
  • Small to medium quantities (1-1,000 pieces)
  • Custom parts that aren’t available off-the-shelf
  • Special materials like titanium or stainless steel
  • Prototypes before full production

For more information on complex parts, visit our complex CNC machining page.

Cost Factors in CNC Metal Milling

Several things affect the price of CNC metal milled parts:

  • Design complexity – More complex parts take longer to make
  • Material – Some metals cost more than others
  • Size – Larger parts use more material and machine time
  • Tolerance requirements – Tighter tolerances need more careful work
  • Quantity – Larger orders usually have lower per-piece costs
  • Finishing needs – Special finishes add to the cost

Quality Control at Istar Machining

We check quality at every step:

  • Advanced measuring tools check dimensions
  • Material certifications confirm quality
  • Multiple inspections throughout the process
  • Final testing for fit and function
  • Documentation of all quality checks

How to Get Started with Your CNC Metal Milling Project

  1. Send us your design files (.STEP, .IGES, or .STL format is best)
  2. Get a quote from our team, usually within 24 hours
  3. Review and approve the quote and any design suggestions
  4. Production begins once approved
  5. Receive updates as your project moves forward
  6. Final inspection ensures quality
  7. Delivery of your finished parts

Why Customers Trust Istar Machining

  • Experience – Years of successful projects across many industries
  • Quality – Certified processes that ensure perfect parts
  • Communication – Clear updates throughout your project
  • Value – Competitive pricing without cutting corners
  • Speed – Quick turnaround when you need it most

Contact Istar Machining Today

Ready to start your CNC metal milling project? Contact our team today for a free quote and expert advice. Our friendly staff is ready to help make your ideas into reality with our precision CNC metal milling services.

Turn your designs into precision metal parts with Istar Machining – your partner for quality CNC metal milling.

Frequently Asked Question

Aluminum (especially 6061-T6) is most common because it’s easy to machine, lightweight, and cost-effective.

Our machines can achieve tolerances as tight as ±0.001″ (0.025mm) for most applications.

Simple parts can be completed in 3-5 days, while complex parts may take 1-2 weeks.

We can make a single prototype or thousands of parts – there’s no minimum order.

We accept most CAD formats including .STEP, .IGES, .STL, and SolidWorks files.

Please enable JavaScript in your browser to complete this form.
Click or drag files to this area to upload.You can upload up to 5 files.
Supports uploading of the following file formats: .step, .stp, .iges, .igs, .x_t, .x_b, .sat, .sldprt, .sldasm, .ipt, .iam, .prt, .asm, .pdf, .dwg, .dxf
Please enable JavaScript in your browser to complete this form.
Click or drag files to this area to upload.You can upload up to 5 files.
Supports uploading of the following file formats: .step, .stp, .iges, .igs, .x_t, .x_b, .sat, .sldprt, .sldasm, .ipt, .iam, .prt, .asm, .pdf, .dwg, .dxf