CNC Machining Complex Parts Service
CNC machining complex parts delivers precise, high-quality solutions for industries needing intricate geometries, ensuring exceptional accuracy, durability, and efficiency.
DEK specialises in CNC machining complex parts using advanced 3-, 4-, and 5-axis machines, capable of handling intricate designs with ±0.005 mm tolerance. Unlike others, DEK offers flexible volumes, diverse material options, and rapid turnaround, making it the go-to partner for demanding engineering and industrial applications.

introduction
Expert CNC Machining Complex Parts for Critical Industries

Our CNC machining service delivers high-precision parts with tight tolerances, fast turnaround, and reliable quality for industries like aerospace, automotive, medical, and robotics.
Using advanced 3-axis, 4-axis, and 5-axis CNC machines, we can produce prototypes and production runs with accuracy. Our team handles metals, plastics, and special alloys, offering milling, turning, drilling, and surface finishing. With years of experience and strict quality control, our CNC machining service ensures your parts meet exact requirements.
- Tight tolerance machining
- Wide material options
- Rapid prototyping & production
- Advanced multi-axis equipment
- Consistent quality control
- Competitive pricing










CNC Machining Complex Parts Materials
Metals
Plastics
Alloy Steel
Alloy steel combines superior strength, hardness, and wear resistance, making it ideal for high-performance CNC Machining Complex Parts. It withstands heavy stress and delivers consistent results across complex geometries.
DEK machines popular alloy steel grades such as 4140 and 4340 into gears, shafts, tools, and suspension components, ensuring exceptional fatigue resistance and durability. Our expertise guarantees precision parts that excel in automotive, aerospace, and industrial environments where performance is critical.
Alloys
4140, 4340, 8620, etc.
Aluminum
Aluminum is lightweight yet durable, offering excellent machinability, corrosion resistance, and thermal conductivity. It is one of the most commonly used metals for CNC Machining Complex Parts due to its strength-to-weight ratio.
At DEK, we specialize in machining aluminum grades such as 6061, 7075, and 5083 to deliver high-quality aerospace brackets, engine housings, heat sinks, and electronic enclosures with unmatched accuracy and efficiency for demanding industries.
Alloys
6061, 7075, 5083, etc.
Brass
Brass offers excellent machinability, corrosion resistance, and thermal conductivity, making it a preferred choice for CNC Machining Complex Parts. Its ability to achieve tight tolerances with a smooth finish makes it suitable for both functional and decorative applications.
At DEK, we machine brass into connectors, fittings, valves, bushings, and precision instruments. Our advanced processes ensure each part delivers superior performance, durability, and a professional finish for electronics, plumbing, and industrial applications.
Alloys
C360, C260, etc.
Bronze
Bronze is valued for its strength, corrosion resistance, and low friction, making it ideal for CNC Machining Complex Parts that must perform under high loads. DEK produces bronze bearings, bushings, marine hardware, and valve parts designed for demanding environments.
With advanced CNC techniques, we achieve precise tolerances and consistent performance. Bronze components from DEK are particularly effective for marine, aerospace, and heavy equipment industries requiring long-lasting wear resistance and reliability.
Alloys
C932, C954, etc.
Copper
Copper delivers outstanding electrical and thermal conductivity, making it essential in electronics and energy applications. Its softness requires skilled machining to achieve precision in CNC Machining Complex Parts.
At DEK, we produce copper connectors, RF components, cooling systems, and electrical terminals. Our advanced machining ensures accuracy even in complex geometries. Copper parts from DEK provide high-performance solutions where conductivity, reliability, and durability are critical for industries such as power, electronics, and aerospace.
Alloys
C101, C110, etc.
Mild Steel
Mild steel is strong, versatile, and cost-effective, making it one of the most widely used metals for CNC Machining Complex Parts. Known for its machinability and reliability, it supports a wide range of structural and mechanical applications.
DEK machines mild steel grades like 1018 and 1045 into brackets, frames, shafts, and mounting components. By combining strength and affordability, DEK delivers high-quality steel parts tailored to meet industrial, automotive, and manufacturing needs.
Alloys
1018, 1045, A36, etc.
Stainless Steel
Stainless steel provides excellent corrosion resistance, high strength, and durability, making it a premium material for CNC Machining Complex Parts. It is widely used in industries requiring reliable performance in harsh environments.
At DEK, we machine grades such as 304, 316, and 17-4 PH to create aerospace components, surgical tools, marine fittings, and precision housings. Our expertise ensures each stainless steel part achieves the tight tolerances and long-term reliability customers expect.
Alloys
303, 304, 316, 17-4 PH, etc.
ABS
ABS is a lightweight, affordable plastic with strong impact resistance, making it an excellent choice for CNC Machining Complex Parts. Its durability and machinability make it popular for prototypes and production components.
DEK machines ABS into enclosures, housings, fixtures, and panels for electronics, automotive, and industrial sectors. With precision machining, DEK ensures ABS parts provide both functionality and cost-efficiency, helping customers achieve reliable performance in large-scale and small-batch applications.
Delrin
Delrin, also known as acetal, offers excellent stiffness, dimensional stability, and low friction, making it ideal for moving Machining Complex Parts. It is widely used in applications requiring precision and durability.
At DEK, we machine Delrin into gears, bushings, bearings, and rollers for industrial machinery, automotive systems, and robotics. Our advanced machining guarantees consistent quality, ensuring every Delrin component meets demanding standards for strength and long service life.
Nylon
Nylon is lightweight, strong, and abrasion-resistant, perfect for CNC Machining Complex Parts that require flexibility and toughness. It is widely used in mechanical and industrial applications due to its resilience under stress.
DEK machines Nylon 6 and Nylon 66 into gears, pulleys, seals, and spacers for automotive and aerospace sectors. With advanced CNC processes, DEK delivers precise, durable nylon parts that combine lightweight design with excellent load-bearing performance.
Grades
Nylon 6, Nylon 66
PC
Polycarbonate is transparent, durable, and heat-resistant, making it suitable for CNC Machining Complex Parts requiring clarity and toughness. It maintains impact strength under high temperatures, commonly used in aerospace, electronics, and automotive industries.
At DEK, we machine polycarbonate into protective covers, optical housings, lighting fixtures, and precision enclosures. With advanced machining, DEK ensures polycarbonate parts achieve exact specifications, combining strength, transparency, and reliability for mission-critical applications across multiple industries.
PEEK
PEEK is a high-performance plastic known for its extreme strength, chemical resistance, and ability to withstand high temperatures. It is ideal for CNC Machining Complex Parts used in aerospace, medical, and energy industries.
DEK machines PEEK into implants, seals, structural components, and aerospace parts. With advanced techniques, DEK delivers PEEK parts that perform under the most challenging conditions, ensuring lightweight, reliable, and long-lasting solutions for demanding engineering applications.
PEI
PEI, also known as Ultem, offers excellent mechanical strength, flame resistance, and electrical insulation, making it suitable for CNC Machining Complex Parts. It performs well in high-temperature and high-stress environments.
DEK machines PEI into insulators, housings, and aerospace components. With precision CNC machining, DEK ensures PEI parts deliver consistent reliability and meet strict industry standards, making them ideal for electronics, aerospace, and automotive applications requiring long-term performance.
PTFE
PTFE is highly resistant to heat, chemicals, and friction, making it essential for CNC Machining Complex Parts in extreme environments. It is widely used for applications requiring non-stick properties and stability.
DEK machines PTFE into gaskets, seals, insulators, and medical components. With advanced CNC processes, DEK provides PTFE parts that offer durability, chemical resistance, and accuracy, making them indispensable in aerospace, chemical, and industrial processing industries worldwide.
Instant & Accurate Quotes

We don't use online automated quotation tools, because it is very inaccurate. Online quote platforms rely solely on calculations based on cutting amounts and fixed coefficients, they fail to account for actual processing nuances, such as material deformation after heat treatment, tight tolerance requirements, grinding after heat treatment, etc. Consequently, automated price calculations can lead to inaccuracies, ultimately increasing your costs.
But you can rest assured at DEK!
Our quotations are both cost-effective and accurate because we have a team of professional mechanical engineers who meticulously review each drawing. These engineers boast over 10 years of experience and possess deep expertise in programming, machine operation, post-processing, material properties, and more. Ensure you will get accurate quotes within 6 hours.
Our Advantages
2300+ Engineers Love Work With Us
High Precision
With advanced 3-, 4-, and 5-axis CNC machines, we manufacture complex parts with tolerances as tight as ±0.005 mm. This ensures superior accuracy, consistency, and performance across intricate geometries.
Rapid Turnaround
Our state-of-the-art facilities and streamlined production allow us to deliver CNC-machined complex parts in record time. Prototypes can be completed in as little as 1–3 days, while standard parts are ready within 7 days.
Material Versatility
DEK supports more than 50 metals and plastics, including aluminum, titanium, stainless steel, ABS, PEEK, and Delrin. This flexibility allows us to machine even the most complex parts without material restrictions.
Complex Geometry
Our engineering team specializes in handling intricate designs, deep cavities, undercuts, and multi-surface machining. With 5-axis milling, Swiss turning, and EDM processes, DEK produces geometries that others often consider impossible.
Certified Quality
We follow ISO 9001:2015, ISO 13485, and AS9100D certifications to maintain strict quality control. Every CNC-machined part undergoes rigorous inspection using CMM, micrometers, and surface testers. We guarantee accuracy, consistency, and reliability.
Cost-Effective
Through optimized CNC setups and efficient production processes, DEK offers highly competitive pricing for complex parts. Clients receive premium quality at costs significantly lower than industry averages.



Our Ordering Process
Send RFQ
Send RFQ with 2D/3D drawings and detailed requirements via Email or online form.
Review & Quote
Our Engineer team will review every drawing carefully and provide an accurate quote within 6 hours.
Confirm Order
Confirm the quote, details and delivery schedule, then sign the contract.
Production
Arrange production process, start programming and machining.
Quality Control
Strict quality control during production and final inspection.
Packaging & Shipping
Pack the parts, attach part identification labels, and start shipping.
Send RFQ 222
Review & Quote
Confirm Order
Production
QC
Delivery
FAQ
CNC Machining Complex Parts Buying FAQS
Get An Accurate Quote For Your Next Projects
No matter your project is complicated or simple, no matter is metal or plastic, you will get an accurate quotation within 6 hours.
Get A Quote TodayKnowing CNC Machining Complex Parts
What are CNC Machining Complex Parts?
CNC machining complex parts means making parts with very detailed shapes, strict accuracy, and hard-to-machine designs. DEK uses advanced multi-axis machines to create these parts with high precision, speed, and repeatability. This process can make components that regular machining cannot handle.
Many industries, including aerospace, automotive, medical, and electronics, depend on this service to get reliable, top-quality parts. From early prototypes to full production runs, CNC machining ensures every part meets exact needs and works as expected.
What are the Advantages of CNC Machining Complex Parts?
CNC machining complex parts offers unmatched precision, flexibility, and reliability. It supports a wide range of materials and ensures efficient production without compromising on quality.
- High-dimensional accuracy
- Ability to handle intricate geometries
- Mass production capability
- Compatible with metals and plastics
- Consistent quality across all parts
- Reduced lead times
When Do You Need CNC Machining Complex Parts?
You need CNC machining for complex parts when your project requires very accurate dimensions, detailed shapes, and strong materials.
This process is important for aerospace parts like turbine blades and engine housings, medical tools such as implants and surgical instruments, and automotive parts including transmission components. It is also used in robotics for custom joints and gears, and in industrial equipment for durable machine parts.