CNC Metal Machining
- Ultra-precision & tolerance
- Industry-leading turnaround
- On-demand CNC metal machining services
Runsom excels in CNC metal machining for more than ten years paired with our highly skilled engineering team and machinists. Our well-equipped facilities enable the incredible capability in-house, micron tolerance, and intricate geometry in CNC metal machining.
CNC Metal Machining Supplier
CNC machined metals are universally applied to every major industry from medical to aerospace. CNC metal machining is popular in the mechanical manufacturing industry for tight accuracy, high quality, and great efficiency. The CNC metal machining process involves different machining processes, such as CNC turning, milling, drilling, EDM, and wire EDM. The desired size, shape, and surface finish of the part can be formed through the process of removing metal material with cutting work.
We have a wide range of post-processing and secondary operations adapting to your needs.
We offer comprehensive services in metal machining, such as magnesium, zinc, brass, steel, and stainless steel, especially being proficient in CNC aluminum machining.
We promise that our CNC machined metal parts or components will perfectly meet the specifications of product designs or drawings and files. Both one-off prototypes and end-use custom parts are available in our CNC metal machining.
Understanding How Metal CNC Machining Works

In CNC machining, a CNC machine carries out operations under a specific set of codes that contains a list of instructions on how to remove the metal materials to the desired geometry, size, and surface finish. The multi-process machining of a workpiece after a single setup starts with an automatic tool change function in the tool storage of CNC machine tools.
The machine tool is under the control of the CNC control system which can make tools, tooling, spindle speed, feed, etc change automatically. Thus, the part can be machined by milling, boring, drilling, and other processes consistently, significantly lowering the auxiliary setup time, such as measuring and machine tool adjustment, and the workpiece clamping. It’s ideal for repeatable tasks with high accuracy and tolerance.
Why Choose CNC Machining for Metal Parts
Choosing CNC for metal machining is ideal for dealing with small runs of metal parts, particularly for prototypes or low-volume production.
Metal Alloys Available for CNC Machining
CNC machined metals are ideal for a series of parts ranging from prototypes to engineering models. And nearly all types of metal materials can be processed with modern machine tools of great rigidity and high power capacity. No matter for general-purpose materials that are highly machinable and thus ideal for testing designs at a low cost, like aluminum, or for some materials that are extremely durable and have incredible heat tolerance, like titanium, all of these metal materials can be machined.
If your project has a demand for parts with excellent properties like high resistance to impact and corrosion, and high heat deflection, you may consider CNC machined metal alloys as your primary choice.

We have the capability to easily work with a variety of metals to meet your needs:
- Aluminum for CNC machining
- Brass for CNC machining
- Steel for CNC machining
- Copper for CNC machining
- Bronze for CNC machining
- Stainless steel for CNC machining
- Titanium for CNC machining
- Zinc for CNC machining
CNC Machining Processes Available for Metals
Milling
Milling uses a cutting tool that cuts through the metal stock in a rotatory movement. Features created in the milling processes include complex contours, flat surfaces, pockets, chamfers, and slots.
Turning
Instead of using a rotating cutting tool, the metal stock is the one that rotates while the tool approaches it in a linear motion. This process is perfect for creating cylindrical components.
Drilling
It is specifically used to drill round holes in the metal stock. Its main difference from a handheld driller is that the movement is controlled by a lever to enlarge a drilled hole to a more precise diameter.
EDM
It involves a machining process that vaporizes particles from the surface using sparks from an electric current, instead of cutting through the metal materials. EDM can be adopted as an auxiliary machining process, especially in aluminum machining.
Wire EDM
It cuts the metal workpiece by the corrosion effect of the pulse discharge. A pulse current passes through the workpiece and a moving metal wire whose function is as the tool electrode.
Surface Finishes Available for Metals CNC Machining
After your metal parts are machined, Runsom can offer a wide range of post-processing and secondary operations adapting to your needs:

- Anodizing
- Powder coating
- Bead Blasted
- Zinc plating
- Gold plating
- Silver plating
- Nickel plating
- Electroless nickel plating
- Electropolishing
- Titanium anodizing
Fast turnaround time & quality
control system
A variety of surface finishes for CNC machined metal parts
Tight tolerances. Within +/- 0.002 in. (0.05 mm) for metal parts
Comprehensive knowledge of CNC metal machining for years
Why Choose Us for Your Custom CNC Metal Parts
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