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Custom CNC machining service

Custom parts manufacturing, from rapid prototyping to on-demand production. Instant quotes and DFM analysis in seconds, quality parts in days.

Our On-Demand CNC machining Services

UTM offers high-precision machining backed by an incredible breadth of manufacturing capabilities. Whether you need prototyping or mass production, our experts utilize advanced technologies to craft products with intricate geometries and superior aesthetics. From complex components to highly-finished parts, we deliver an extensive range of on-demand machining services. Leverage our skilled manufacturing prowess to bring your designs to life with uncompromising quality.

Metalworking CNC milling machine.

CNC Machining

Your precision turned parts, produced by our skilled machinists on imported or domestic CNC lathes in China.
Metalworking CNC milling machine.

CNC Milling

Precision CNC milled components, expertly crafted to bring your wonderful designs to reality.
Turning lathe machine closeup, metalworking

CNC Turning

Precision machined prototype and production parts, crafted using our advanced CNC turning stations.
working with sheet metal on CNC hydraulic press brake. Bending sheet metal

Sheet Metal Fabrication

Custom sheet metal fabrication solutions, precisely crafted to meet your unique specifications.

CNC machining materials

We can generate instant machining quotes for 50+ metals and plastics.

Aluminum 6061

Aluminum 5052

Aluminum 2024

Aluminum 6063

Aluminum 7050

Aluminum 7075

Aluminum MIC-6

Learn more about aluminum for CNC machining.


Copper 101

Copper C110

Learn more about copper for CNC machining.

Copper 260

Copper 360

Learn more about brass for CNC machining.

Nitronic 60 (218 SS)

Stainless Steel 15-5

Stainless Steel 17-4

Stainless Steel 18-8

Stainless Steel 303

Stainless Steel 316/316L

Stainless Steel 416

Stainless Steel 410

Stainless Steel 420

Stainless Steel 440C


Learn more about stainless steel for CNC machining.

Steel 1018

Steel 1215

Steel 4130

Steel 4140 

Steel 4140PH 

Steel 4340 

A2 Tool Steel

 O1 Tool Steel

 Learn more about steel for CNC machining.

Zinc Alloy

Learn more about zinc for CNC machining.

Steel 1018

Steel 1215

Steel 4130

Steel 4140 

Steel 4140PH 

Steel 4340 

A2 Tool Steel

 O1 Tool Steel

 Learn more about steel for CNC machining.

High-strength engineering plastic used for many commercial products.

Learn more about ABS for CNC machining.



High-strength engineering plastic used for many commercial products.

A clear glass-like plastic. Good wear and tear properties. Great for outdoor use. 

Learn more about acrylic for CNC machining.

Acetal Delrin 150 Delrin 100 Resin with good moisture resistance, high wear resistance, and low friction. 

Learn more about Delrin for CNC machining.

Garolite G10 (FR4)

Garolite G10 (non-FR)

Garolite G11 (FR5)

Constructed of an epoxy resin with fiberglass fabric reinforcement, also called epoxy-grade industrial laminate and phenolic, this material offers high strength and low moisture absorption. Learn more about garolite G10 for CNC machining and phenolic machining.

High-density polyethylene is a moisture and chemical-resistant plastic with good impact strength. The material is outstanding for outdoor applications as well as watertight containers or seals. 

Learn more about HDPE for CNC machining.

Offers increased mechanical strength, rigidity, good stability under heat and/or chemical resistance.

Learn more about Nylon 6/6 for CNC machining.


With almost twice the tensile strength of ABS, polycarbonate has superior mechanical and structural properties. Used widely in automotive, aerospace, and other applications that require durability and stability. 

Learn more about PC for CNC machining.




Offering excellent tensile strength, PEEK is often used as a lightweight substitute for metal parts in high-temperature, high-stress applications. PEEK resists chemicals, wear, and moisture. Learn more about PEEK for CNC machining.

Has excellent electrical properties and little or no moisture absorption. It carries light loads for a long period in widely varying temperatures. It can be machined into parts requiring chemical or corrosion resistance.


Learn more about polypropylene for CNC machining.

This material surpasses most plastics when it comes to chemical resistance and performance in extreme temperatures. It resists most solvents and is an excellent electrical insulator.


Learn more about PTFE for CNC machining.

Ultra-high molecular weight polyethylene. A general-purpose material. It offers a unique combination of wear and corrosion resistance, low surface friction, high impact strength, high chemical resistance, and does not absorb moisture.

Learn more about UHMW-PE for CNC machining.

Polyvinyl chloride (Type 1) is a highly chemical-resistant synthetic plastic, PVC is commonly in environments exposed to liquids or requires electrical insulation.


Learn more about PVC for CNC machining.

ULTEM 1000

ULTEM 2300


ULTEM (Polyetherimide) is a stiff, robust, performance-grade thermoplastic that can operate continuously in high-temperature environments (up to 340°F). It has one of the highest dielectric strengths of commercially available thermoplastics, making it an excellent electric insulator. Since ULTEM is also resistant to chemicals, easily cleaned, and does not absorb moisture, it is often used for medical applications.

We can source any other material on request, but quotes take up to 48 hours.

CNC machining surface finishes

We can instantly quote a wide variety of post-machining surface finishes.

Applicable Materials
Machining marks

As  machined  

Metals, Plastics

Visible, light surface scratches 

Tolerances are not affected

Smooth machining

Metals, Plastics

Visible, light surface scratches

Tolerances are not affected

Fine machining


Slightly visible

Tolerances are not affected



Removed on primary surfaces

Met after polishing

Bead blasting


Removed for non-cosmetic, removed on primary surfaces for cosmetic  

Not affected except for specific features



Reduced for non-cosmetic, removed on primary surfaces for cosmetic 

Met after brushing

Anodizing Type II


Reduced for non-cosmetic, removed on primary surfaces for cosmetic 

Met after anodizing

Anodizing Type III


Visible under anodizing

Met after anodizing

Black oxide 

Copper, Stainless steel, Alloy steel, Tool steel, Mild steel


Met after coating

Chromate conversion coating



Met after coating

Electroless nickel plating

Mild steel, Aluminum, Stainless steel

Reduced but visible

Met after electroless nickel plating

Powder coating



Met before powder coating

Brushed + electropolishing

Stainless steel

Removed on Primary surfaces

Met after electropolishing

CNC Machining Tolerances

CNC Milling
CNC Turning

Maximum Part Size

4000×1500×600 mm
157.5×59.1×23.6 in

200×500 mm
7.9×19.7 in.

Minimum Part Size

4×4 mm
0.1×0.1 in.

2×2 mm
0.079×0.079 in.

Minimum Feature Size

Φ 0.50 mm
Φ 0.00197 in.

Φ 0.50 mm
Φ 0.00197 in.

Standard Tolerances

Metals: ISO 2768-m

Metals: ISO 2768-m

Linear Dimension

+/- 0.005 mm

+/- 0.005 mm

Hole Diameters
(Not Reamed)

+/- 0.005 mm

+/- 0.005 mm

Shaft Diameters

+/- 0.005 mm

+/- 0.005 mm

Lead Time

5 business days

5 business days

Overview: What is CNC Machining?

CNC (Computer Numerical Control) machining is an automated manufacturing process that uses high-speed cutting tools to precisely shape metal or plastic stock materials. Common CNC machines include milling machines, lathes, and routers with 3-axis to 5-axis capabilities. The cutting approach varies - the workpiece may be stationary while the tool moves, the tool may be stationary while the workpiece moves, or both may move simultaneously.

Skilled machinists program the tool paths based on CAD models of the final part geometry. CNC machining offers high precision and repeatability, making it suitable for custom parts across industries like aerospace, medical, robotics, and electronics. UTM provides CNC machining services quoting over 40 materials from aluminum to engineered plastics like PEEK and Teflon. The computer control enables automated, efficient material removal through processes like milling, drilling, and turning.

UTM CNC machine shops

cnc machine workspace


About Us

UTM Precision Machining, located in Qingdao China, offers precision CNC milling and turning services for innovative companies around the world. We work with you through every stage of product development and have a team of highly-trained technicians to help you bring your product ideas to life. Whether you need a custom prototype or low-volume production for up to 1000+ units, our service is second to none. With a strong emphasis on quality control, we get the job done right, every time. We’ll go above and beyond to help you bring your product ideas to life!

Dedicated Employees
58 +
CNC Machine
100 +
Satisfied Customers
800 +

Why Choose us

Manufactured by UTM

cnc parts

Work With Numerous Industries

From prototyping to production, RapidDirect ensures superior quality and reliable functionality. With a wide selection of production-grade metal and plastic materials as well as highly advanced on-demand manufacturing techniques, we offer high-quality products across several industries.

Auto industry


Our low-volume manufacturing services is the ideal manufacturing solution for on demand automotive parts.



The durability and precision that our precison manufacturing services provide meets the sophisticated needs the different phases of the aerospace industry required.


Medical Devices

Medical supplies manufacturers, tech startups, and research labs benefit significantly from the prototyping solutions we provide.

Consumer Goods

Strong partnerships with leading consumer manufacturers help us accelerate the prototyping process and improve the consumer goods industry.



Our industrial-grade robotics prototyping and parts manufacturing services aid in the continuous evolution of the robotics market.


Industrial machinery

Multiple material choices make industrial parts more competitive.

Quality Services

Clients Love

They do what they say they'll do. Sometimes they even finish sooner than promised. If we have any problems or questions, they always give us helpful answers. You can count on them.


UTM is an extremely professional company with great customer service. Everything we ordered arrived as expected. There were some initial problems, but Kobe helped find a solution that worked for both sides. We will definitely use them again.


For my last order, the customer support was amazing. Kobe helped me solve a logistics issue and the algo parts were excellent quality as expected. I'm super happy with the support and service. For my next order, I'll be increasing the number of parts since I know the quality and service will be great.

Andres C

I ordered 50 CNC machined stainless steel parts and they turned out great. The dimensions were right on and the parts were clean and smooth. I'll definitely order from them again.

Wim Peter

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