Custom Online CNC Machining Services
From prototypes to on-demand production parts, get an instant quote for your metal or plastic projects with our online CNC machining services. Choose from 40+ materials, 10+ surface finishes. ISO 9001:2015, ISO 13485 certified.
- Instant CNC quotes & detailed DFM
- Tolerances down to 0.01mm (±0.0004″ )
- Machined parts as fast as 1 day
10s
Instant Quotes
1 day
Lead time
0 pc
MOQ
0.01 mm
Tolerances
Our CNC Machining Services
For engineers, product developers, and designers requiring prototyping and low-volume production, RapidDirect’s custom CNC services is the solution. From simple to intricate designs with tight tolerances, our ISO 9001 certified CNC machine shops ensure excellence. Our fast CNC machining capabilities promise quality custom machined parts delivered within 1 day.
CNC milling performs multi-axis milling operations, including 3, 4, and 5-axis machining processes. Offer precision and allow for the creation of detailed and specific geometries from metal or plastic blocks.
CNC turning uses CNC lathes and turning centers to shape metal rob stock, focusing primarily on cylindrical parts. Ensure components achieve consistent dimensions and smooth finishes.
Gallery of CNC Machined Parts
View the custom CNC machined prototypes and end-use parts we’ve produced for our customers.
Order CNC Machining Parts Online: Easy & Fast
Upload your design file to our Instant Quote Platform and instantly receive pricing, lead time, and DFM details for your CNC components. Specializing in CNC machining for metals and plastics, we provide adaptive production and shipping solutions to align with your product development needs.
Custom Online CNC Machining Solutions: From Concept to Completion
Begin with a prototype, transition to small batches, and end with precise parts made just for your project. Every solution, designed for your needs.
Rapid Prototyping
Turn ideas into reality quickly with Rapid Prototyping. Detect and fix design errors early, saving time and costs, while ensuring your CNC machined product is market-ready.
Low-Volume Production
Need a limited batch without the wait? Our Low-volume Production gets you machined parts fast, without the burden of large-scale orders, balancing costs and efficiency.
On-Demand Production
Get flexibility for any order size with our On-Demand Production. freeing customers from volume constraints while guaranteeing CNC machining precision and quality.
CNC Machining Materials
A number of materials can be used in CNC machines, giving you various of options to complete rapid prototyping to production runs of custom complex parts. For your manufacturing needs, we provide instant quotations of 40+ metals and plastics, and even you can compare prices for different machining materials.
Aluminum
Aluminum is a highly ductile metal, making it easy to machine. The material has a good strength-to-weight ratio and is available in many types for a range of applications.
Price: $
Lead Time: < 10 days
Tolerances: ±0.125mm (±0.005″)
Max part size: 200 x 80 x 100 cm
CNC Machining Surface Finishes
CNC machining leaves visible tool marks during the process of removing portions of the block’s surface to create desired shapes. If don’t want as-machined parts, select a surface finishing for your custom parts. At RapidDirect, we offer several common surface finishes that help improve functionality and aesthetics.
| Image | Name | Description | Materials | Color | Texture | Link |
|---|---|---|---|---|---|---|
 |
Anodizing | Anodizing improves corrosion resistance, enhancing wear resistance and hardness, and protecting the metal surface. Widely used in mechanical parts, aircraft, and automobile parts, precision instruments, etc. | Aluminum | Clear, black, grey, red, blue, gold. | Smooth, matte finish. | Learn More>> |
 |
Bead Blasting |
Bead blasting results in parts with a smooth surface with a matte texture. Used mainly for visual applications and can be followed by other surface treatments. |
ABS, Aluminum, Brass, Stainless Steel, Steel |
N/A | Matte | Learn More>> |
 |
Powder Coating | Powder coating is a type of coating that is applied as a free-flowing, dry powder. Unlike conventional liquid paint which is delivered via an evaporating solvent, powder coating is typically applied electrostatically and then cured under heat or with ultraviolet light. | Aluminum, Stainless Steel, Steel |
Black, any RAL code or Pantone number |
Gloss or semi-gloss |
|
 |
Electroplating | Electroplating can be functional, decorative or corrosion-related. Many industries use the process, including the automotive sector, in which chrome-plating of steel automobile parts is common. |
Aluminum, steel, stainless steel |
N/A |
Smooth, glossy finish |
|
 |
Polishing |
Polishing is the process of creating a smooth and shiny surface, either through physical rubbing of the part or by chemical interference. The process produces a surface with significant specular reflection, but in some materials can reduce diffuse reflection. |
Aluminum, Brass, Stainless Steel, Steel |
N/A |
Glossy |
|
 |
Brushing |
Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes. |
ABS, Aluminum, Brass, Stainless Steel, Steel |
N/A | satin |
CNC Machining Tolerances
For metals, our RapidDirect CNC machining service adheres to the ISO 2768-m standard, and for plastics, we follow ISO 2768-c. For custom tolerances, mark them clearly on your drawing.
| Standards | 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 Plastics: ISO 2768-c |
Metals: ISO 2768-m Plastics: ISO 2768-c |
| Linear Dimension |
+/- 0.025 mm +/- 0.001 in. |
+/- 0.025 mm +/- 0.001 in. |
|
Hole Diameters (Not Reamed) |
+/- 0.025 mm +/- 0.001 in. |
+/- 0.025 mm +/- 0.001 in. |
| Shaft Diameters |
+/- 0.025 mm +/- 0.001 in. |
+/- 0.025 mm +/- 0.001 in. |
| Edge Condition | Sharp corners will be removed in the form of a chamfer or radius. The size of the chamfer, or resulting radii, must be indicated on the drawing. | |
| Threads and Tapped Holes |
Diameter: Φ 1.5-5 mm, depth: 3×diameter Diameter: Φ 5 mm or more, depth: 4-6×diameter |
Diameter: Φ 1.5-5 mm, depth: 3×diameter Diameter: Φ 5 mm or more, depth: 4-6×diameter |
| RapidDirect can produce threads of any specification and size required by our customers. | ||
| Text |
Minimum width of 0.5 mm, depth of 0.1 mm RapidDirect can use CNC engraving or laser carving to create standard text based on customers’ requirements. |
RapidDirect can use laser marking to create standard text for CNC turned parts. |
| Lead Time | 5 business days | 5 business days |
Our CNC Machining for Various Industrial Applications
With custom CNC machining, RapidDirect supports diverse industry requirements.
CNC Machining Case Study
Andrea, a skilled mechanical engineer from Italy, leveraged RapidDirect’s advanced 5-axis CNC machining services to create a high-quality passive exoskeleton prototype. This design enhances human power and reduces physical fatigue.
Tour Our Hermle CNC Machining Center
See the efficiency of RapidDirect’s incredible line of Hermle 5-axis CNC machines—precision parts in just 24 hours.
Why Choose Our Custom CNC Machining Service
Online Instant Quote & DFM Analysis
No need to write a quote request email, get instant CNC quotes by simply uploading your design files. Our digital quoting platform analyzes your part geometry, and provides real-time & competitive pricing and comprehensive DFM feedback.
Consistent High Quality
Advanced CNC capabilities, rigorous quality checks, combined with constant communication, ensure that every machined piece you receive meets the highest standards, consistently and reliably.
Fast and Reliable Delivery
Boasting robust manufacturing capacity, RapidDirect ensures quick turnaround for CNC machined parts. Plus, with our varied shipping choices, you'll get your order on time, without the usual hassles.
Professional Engineering Support
No matter where you are, you can get our 24/7 engeering support all year around. Our experienced engineer can provide you with the most appropriate solution to your part design, material selection, and surface finishing and even lead time.
CNC Machining Overview
What's CNC Machining?
CNC Machining, or Computer Numerical Control Machining, is a manufacturing technique where computer-controlled devices are used to remove layers from a material, creating detailed parts or components. Through a combination of tooling and precise machine movement, it produces parts to exact specifications.
What's the CNC Machining Process?
The CNC machining process begins by designing a part in CAD software. This design is then converted into a set of machine commands using CAM software. The CNC machine reads these commands to precisely cut and shape the material, producing a finished part that matches the digital design.
What are the Advantages of CNC Machining?
CNC Machining offers unparalleled precision and repeatability, making it a top choice for industries requiring intricate parts. Its ability to handle a variety of materials, from metals to plastics, combined with fast production times and consistent quality, makes it an essential method in modern manufacturing.
What's the Difference Between 3D Printing and CNC Machining?
3D printing is an additive manufacturing method, building parts by depositing material layer by layer. In contrast, CNC machining is a subtractive method, starting with a solid block of material and removing sections until the desired part is achieved. While 3D printing is often favored for complex geometries and rapid prototyping, CNC machining excels in durability, precision, and material versatility.
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