CNC Turning Services

Unparalleled precision for producing metal and plastic parts

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Advantages of CNC

Rapid Turnaround

Using the latest CNC machines, Xometry produces highly accurate parts in as little as 6 business days.

Scalability

CNC turning is perfect for production of 1-10,000 parts.

Precision

Offers high-precision tolerances ranging from +/-0.001″ – 0.005″, depending on customer specs.

Material Selection

Choose from over 50 metal and plastic materials. CNC turning offers a wide variety of certified materials.

Custom Finishes

Select from a variety of finishes on solid metal parts, built to precise design specifications.

CNC Materials

Metals

  • Aluminum
  • Brass
  • Bronze
  • Copper
  • Magnesium
  • Stainless Steel
  • Steel
  • Titanium
  • Zinc

Plastics

  • Acetal (Polyoxymethylene (POM)) [Delrin]
  • Acrylonitrile Butadiene Styrene (ABS)
  • G-10 Garolite [Fiberglass]
  • Polycarbonate (PC)
  • Polyether Ether Ketone (PEEK)
  • Polyetherimide (PEI) [Ultem]
  • Polyethylene (PE)
  • Polymethyl Methacrylate (PMMA/Acrylic)
  • Polytetrafluoroethylene (PTFE) [Teflon]
  • Polyurethane (PU)
  • Polyvinyl Chloride (PVC)

CNC Finishes

As-Milled

The finish option with the quickest turnaround. Parts are left with visible tool marks and potentially sharp edges and burrs, which can be removed upon request. Surface finish is comparable to 125 uin Ra finish.

Bead Blast

The part surface is left with a smooth, matte appearance.

Anodized (Type II or Type III)

Type II creates a corrosion-resistant finish. Parts can be anodized in different colors—clear, black, red, and gold are most common—and is usually associated with aluminum. Type III is thicker and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II.

Powder Coat

This is a process where powdered paint is sprayed onto a part which is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard painting methods. A wide variety of colors are available to create the desired aesthetic.

Custom

Don’t see the finish you need? Submit an RFQ and we’ll look into a finishing process for you.

Applications for CNC

Rapid Tooling

Because CNC turning services can be applied to virtually any material, it is perfect for rapid tooling, i.e., creating fixtures or molds.

Rapid Prototyping

The range of materials available, low cost per unit, and speed of production makes CNC a great option for prototyping.

End-Use Production

High-quality finish, vast material options and precise tolerances have made CNC turning a favorable technology for end-use parts.

Overview: What is CNC?

The Basics of CNC Lathes

CNC lathe machines, also called live tooling lathes, are ideal for cutting any symmetrical cylindrical or spherical parts. Characteristically, a lathe spins a workpiece on a vertical or horizontal axis, while a fixed shaping instrument moves around it on a more or less linear path. The act of cutting a workpiece on a CNC lathe is called turning.

How CNC Turning Works

CNC lathes use a subtractive method to create the desired shape. With the G-Code created, a blank bar of stock material is loaded into the chuck of the lathe's spindle. The chuck holds the workpiece in place while the spindle spins. When the spindle is up to speed, a stationary cutting tool is brought into contact with the workpiece to remove material until the desired geometry is achieved.

There are many operations that can be performed on a live tooling lathe, including facing, threading, knurling, drilling, boring, reaming, and taper turning. Different operations require tool changes and can increase cost and set-up time.

When all machining operations are completed, the part is cut from the stock for further post-processing. The CNC lathe is then ready to repeat the operation with little-to-no set-up time in between.

Types of CNC Lathes

There are many types of lathes, but the most common are 2-axis CNC lathes and Swiss-type lathes. Swiss-type lathes are unique in that stock material is fed through a guide bushing, allowing the tool to cut nearer to the point of support, which makes them particularly useful for long, slender turned parts and micromachining. Some Swiss-type lathes also come equipped with a second tool head that operates as a CNC mill, allowing them to perform multiple machining operations without having to move the workpiece to a different machine. This makes Swiss-type lathes extremely cost-effective for complex turned parts.

Benefits of CNC Turning

Like CNC mills, CNC lathes can be easily set up for high repeatability, which makes them great for everything from rapid prototyping to low and high-volume production. Multi-axis CNC turning centers and Swiss-type lathes allow for multiple machining operations in one machine. making them a cost-effective option for complex geometries that would otherwise require multiple machines or tool changes in a traditional CNC mill.

The Benefits of Working With Xometry For CNC Turning

With access to a massive network of CNC lathes and turning centers, Xometry is able to provide you with the capacity and capabilities your project needs, while also delivering the most competitive pricing and lead times. Xometry's Machine Learning-trained technology platform also provides instant feedback on DFM, to ensure that your part is optimized for the CNC turning process, and fits the requirements you need. Our on-demand manufacturing platform can deliver high-quality metal or plastic turned parts for your rapid prototyping or low-to-high volume production runs.

Featured CNC Resources

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