CNC Machining Services
Upload a CAD file and see your price in minutes. We cut metal and plastic parts on our own machines, one prototype or a full production run, with parts leaving the floor in as little as 3 days.
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What is CNC machining?
CNC machining is a subtractive process. A computer controlled cutting tool removes material from a solid block or bar until the part matches the CAD file. It works in metal and plastic, holds tight tolerances, and repeats the same part as accurately on the thousandth run as the first. Most machining falls into milling, where the tool spins against a fixed part, and turning, where the part spins against a fixed tool.
Why Engineers Choose XC Machining
- Our own factory. No broker markup, and no waiting on a partner shop to return your call.
- A named DFM engineer. One person reviews your CAD and stays on the project through delivery.
- CMM inspection on every order. Reports ship with the parts, first article reports on request.
- ISO 9001:2015 certified. Documented process control, not just a claim.
- 1 to 10,000+ parts. The same shop handles your prototype and your production run.
Our CNC Machining Processes
3, 4 and 5 axis mills for tight tolerance parts and complex geometry. Aluminum, steel, titanium and engineering plastics, held to ±0.005 mm with surface finishes down to Ra 0.8 μm.
Multi axis lathes with live tooling for cylindrical, conical and threaded parts. Diameters from 2 mm to 200 mm in aluminum, steel, brass, titanium and plastics.
Large format cutting and engraving in sheet stock. Aluminum, acrylic, polycarbonate, wood composite and foam, up to 4000 x 1500 mm. Good for panels, enclosures and jigs.
The head tilts instead of the part, so undercuts and compound angles come off in one setup. Fewer setups means tighter accuracy on complex work.
What Tolerances Can CNC Machining Achieve?
XC Machining holds CNC tolerances per ISO 2768 standards across all metal and plastic materials. The table below specifies our standard and precision tolerance capabilities for milling and turning operations.
| Metals | ISO 2768-m |
| Plastics | ISO 2768-c |
| Precision Tolerances | XC Machining can manufacture and inspect parts with strict tolerances according to your drawing specifications and GD&T annotations, including tolerances tighter than +/- 0.001 inches. |
| Minimum Wall Thickness | 0.5mm |
| Minimum End Mill Size | 0.5mm |
| Minimum Drill Size | 1mm |
| Maximum Part Size | CNC Milling: 4000×1500×600 mm |
| CNC Turning: 200×500 mm | |
| Minimum Part Size | CNC Milling: 5×5×5 mm |
| CNC Turning: 2×2 mm | |
| Production Volume | Prototyping: 1-100 pcs |
| Low Volume: 101-10,000 pcs | |
| High Volume: Above 10,001 pcs | |
| Lead Time | 5 business days for most projects. Delivery of simple parts can be as fast as 1 day. |
What Are Common Applications for CNC Machined Parts?
CNC machining produces production-grade metal and plastic components for aerospace, medical, automotive, robotics, and electronics applications. XC Machining commonly manufactures the following CNC machined component types:
- Structural housings and enclosures
- Brackets, mounts, and bracing
- Production jigs and fixtures
- Bearings, gears, and shafts
- Internal mechanical components
- Medical device housings and instruments
What Are the Advantages of CNC Machining?
CNC machining offers specific technical and commercial advantages over manual machining, casting, and 3D printing for production-grade components.
- Dimensional accuracy within ±0.005 mm with full repeatability
- ISO 2768-m standard tolerances on metals
- Production-grade aluminum, steel, titanium, brass, and plastics
- Prototype parts delivered within 1–5 business days
- Lower per-unit cost at volumes above 100 parts
- Anodizing, plating, and powder coating post-processing available
What Quality and Support Does XC Machining Provide for CNC?
XC Machining backs every CNC project with ISO 9001:2015 certified processes, in-process CMM inspection, and dedicated DFM engineering review. We operate 50+ CNC machines in our Dongguan facility and maintain tolerances from ±0.005 mm with full traceability on every part.
Our CNC department includes 5-axis milling centers, 3-axis and 4-axis VMCs, CNC turning lathes with live tooling, CNC routers, and wire EDM machines — all maintained to precision standards daily.
Choose from 60+ CNC-machinable materials: aluminum 6061/7075, stainless 304/316, mild steel, tool steel, titanium Grade 2/5, brass, copper, PEEK, Delrin, Nylon, ABS, and polycarbonate.
Our CNC engineers review every CAD file for wall thickness, draft angles, undercut feasibility, and tool access before quoting. DFM feedback provided within 12 hours via email or WhatsApp, available 24/7.
Surface finishes for CNC parts include as-machined (Ra 3.2 μm), bead blasting, anodizing Type II/III, powder coating, electroplating, polishing (Ra 0.4 μm), and brushed satin finish.
China’s CNC Machine Shops. Ship Globally
What Materials Does XC Machining CNC Machine?
XC Machining CNC machines 60+ metals and engineering plastics for prototyping and production. Each material is selected for its mechanical properties, machinability, and application requirements. The table below lists our most commonly requested CNC material grades with standard specifications.
Aluminum is lightweight, strong, and easy to machine, positioning it great for various applications like aerospace and automotive parts. Its corrosion resistance also adds to its appeal in outdoor projects and structural components.
Aluminum is lightweight, strong, and easy to machine, positioning it great for various applications like aerospace and automotive parts. Its corrosion resistance also adds to its appeal in outdoor projects and structural components.
Aluminum is lightweight, strong, and easy to machine, positioning it great for various applications like aerospace and automotive parts. Its corrosion resistance also adds to its appeal in outdoor projects and structural components.
Aluminum is lightweight, strong, and easy to machine, positioning it great for various applications like aerospace and automotive parts. Its corrosion resistance also adds to its appeal in outdoor projects and structural components.
What Surface Finishes Are Available for CNC Parts?
XC Machining applies the following surface finishes to CNC machined metal and plastic parts for corrosion resistance, wear protection, and cosmetic appearance.
Sand blasting propels abrasive media under pressure to remove tool marks and create a uniform matte texture with Ra 1.6–6.3 μm roughness.
Brushed finishing creates a unidirectional satin grain pattern on aluminum and stainless steel, producing a consistent Ra 0.8–1.6 μm surface.
Anodizing (Type II and Type III hard-coat) forms a protective oxide layer on aluminum with 5–80 μm thickness and custom color options.
Powder coating applies a 60–120 μm durable polymer layer to steel and aluminum parts with RAL color matching and UV resistance.
Mirror polishing achieves Ra 0.05–0.4 μm surface roughness on aluminum, stainless steel, brass, and copper CNC parts.
Electroplating deposits nickel, chrome, zinc, or gold layers onto CNC parts for corrosion resistance, conductivity, and hardened wear surfaces.
What Materials Does XC Machining CNC Machine?
XC Machining CNC machines 60+ metals and engineering plastics for prototyping and production. Each material is selected for its mechanical properties, machinability, and application requirements. The table below lists our most commonly requested CNC material grades with standard specifications.
6061, 7075, 2024
304, 316, 410, 420
1018, 1045, A36
D2, O1, H13
C360, C464
H59 ,H60
Grade 2, Grade 5 (Ti-6Al-4V)
Our CNC Machining Services Prototype Manufacturing Capabilities
Provides injection molding for prototypes and custom parts, emphasizing expert support, competitive pricing, and faster production cycles.
Get reliable vacuum casting services for high-quality prototypes and production parts at competitive prices. XinCheng offers highly detailed casting parts with consistent quality.
Uses cutting, bending, and forming techniques to produce precision metal components suited for industrial, commercial, and manufacturing applications.
Specialist Industries
Bring Your Designs to Life with XC Machining
Experience precision engineering with XC Machining. From detailed prototypes to high-volume production, we’re here to turn your concepts into reality. Contact us today to discuss your project needs!
- Expertise Shared Widely
- Market Reach Expanded
- Advanced Technology Integrated
- Collaborative Innovation Opportunities
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CNC Machining Frequently Asked Questions
What Are G-Code and M-Code in CNC Machining?
G-code and M-code are the two programming languages that control CNC machine operations. G-code commands define tool movement paths — linear cuts (G01), circular arcs (G02/G03), rapid positioning (G00), and canned drilling cycles (G81). M-code commands control auxiliary machine functions including spindle start/stop (M03/M05), coolant activation (M08/M09), and program end (M30). XC Machining programs all CNC operations using CAM-generated G-code optimized for each material and machine configuration to ensure dimensional accuracy.
What Is a Machining Center and How Does It Work?
A machining center is a CNC machine that performs milling, drilling, boring, tapping, and reaming operations in a single setup without repositioning the workpiece. Automatic tool changers (ATCs) with 20–60 tool capacity switch cutting tools in under 5 seconds. Three-axis vertical machining centers (VMCs) handle most prismatic parts, while 5-axis machining centers enable simultaneous multi-angle cutting for complex geometries like turbine blades and medical implants. XC Machining operates both VMC and 5-axis machining centers for prototype and production CNC work.
Does XC Machining Have a Minimum Order Quantity for CNC Parts?
XC Machining has no minimum order quantity. We accept orders from 1 single prototype to 100,000+ production parts. CNC machining is cost-effective starting at any quantity because there is no tooling investment required — unlike injection molding or die casting. For quantities above 500 parts, we offer volume pricing with reduced per-unit costs. Upload your CAD file to receive a quote for any quantity.
What Is the Lead Time for CNC Machined Parts?
Standard CNC machining lead time at XC Machining is 5 business days for prototype quantities of 1–100 parts. Simple geometries in common materials like aluminum 6061 can ship in as fast as 1–3 business days. Production runs of 100–10,000 parts typically require 10–15 business days depending on complexity and material availability. Rush delivery options are available for time-critical projects. Exact lead times are included in every quote.
CNC Manufacturing Resources
