CNC Milling Australia
3-axis, 4-axis, and 5-axis CNC milling for prototypes and production. Aluminium, steel, titanium, and engineering plastics. ISO 9001:2015 certified suppliers. Quotes within 2 business days.
CNC Milling Capabilities
3-Axis CNC Milling
The workhorse of precision manufacturing. Ideal for prismatic parts, housings, brackets, plates, and components with features accessible from the top. Cost-effective for straightforward geometry.
- ✓ X/Y/Z linear movement
- ✓ Tolerances to ±0.01mm
- ✓ Best for flat and prismatic parts
- ✓ Lowest cost per hour
4-Axis CNC Milling
Adds rotational axis for machining features around cylindrical parts or on multiple faces without re-fixturing. Efficient for camshafts, round components with axial features, and indexed multi-face parts.
- ✓ X/Y/Z + rotary A-axis
- ✓ Continuous or indexed rotation
- ✓ Multi-face machining
- ✓ Reduced setups vs 3-axis
5-Axis CNC Milling
Full simultaneous 5-axis capability for the most complex parts. Aerospace components, impellers, turbine blades, medical implants, and anything requiring compound angles or undercut features.
- ✓ Simultaneous 5-axis motion
- ✓ Complex geometry in one setup
- ✓ Highest accuracy — no re-referencing
- ✓ Ideal for aerospace and medical
CNC Milling Materials
We mill virtually all engineering materials. Common selections below — contact us for exotic alloys.
Aluminium Alloys
6061-T6 (most common), 7075-T6 (high strength), 5052 (marine), 2024 (aerospace), 6082
Best machinability, lowest cost, excellent for prototypes
Stainless Steel
304, 316, 316L, 303 (free-machining), 17-4 PH, 15-5 PH
Corrosion resistant, food-safe grades available
Carbon & Alloy Steel
1018, 1045, 4140, 4340, EN8, EN24, tool steels (D2, H13, A2)
High strength structural applications
Titanium
Grade 2 (commercially pure), Ti-6Al-4V / Grade 5
Aerospace, medical implants, high strength-to-weight
Exotic Alloys
Inconel 625, Inconel 718, Hastelloy C-276, Waspaloy
High temperature, chemical resistance applications
Engineering Plastics
Delrin/POM, PEEK, Nylon PA6/PA66, PTFE, Polycarbonate, UHMWPE
Lightweight, chemical resistant, food-safe options
CNC Milling Tolerances
| Grade | Tolerance | Application |
|---|---|---|
| General | ±0.1mm | Non-critical features, brackets, housings |
| Standard Precision | ±0.05mm | Most engineering components |
| High Precision | ±0.01mm | Bearings seats, fits, mating surfaces |
| Ultra Precision | ±0.005mm | Gauge blocks, master parts, with CMM verification |
CNC Milling FAQ
What is the difference between 3-axis and 5-axis CNC milling?
3-axis CNC milling moves the cutting tool along X, Y, and Z axes — ideal for prismatic parts with features accessible from the top. 4-axis adds rotation around the X-axis, allowing machining of features around a cylindrical part. 5-axis milling adds two rotational axes (typically B and C), enabling the tool to approach the part from any angle. 5-axis machines complex geometry in a single setup, reducing setup time and improving accuracy for aerospace, medical, and complex industrial components.
What materials can be CNC milled?
CNC milling can process virtually any machinable material: aluminium alloys (6061, 7075, 5052), steels (mild steel, 4140, 316 stainless, tool steels), titanium (Grade 2, Ti-6Al-4V), copper and brass, nickel superalloys (Inconel, Hastelloy), and engineering plastics (Delrin, PEEK, nylon, polycarbonate). The most common CNC milling material in Australia is aluminium 6061-T6 due to its excellent machinability, strength-to-weight ratio, and low cost.
What tolerances can be held in CNC milling?
Standard CNC milling tolerances are ±0.1mm for general features. Precision milling achieves ±0.01mm on critical dimensions. Tight-tolerance milling with CMM verification can achieve ±0.005mm or better on specific features. Tolerances depend on material (aluminium holds tighter tolerances more readily than steel due to thermal stability), part size, feature type, and tooling. Always specify your critical dimensions and tolerances explicitly on your 2D drawing.
How long does CNC milling take in Australia?
Quotes are provided within 2 business days. Standard production lead time is 7–14 business days from order confirmation. Rush milling (3–5 business days) is available for time-critical requirements. Complex 5-axis milling or exotic materials may require 3–4 weeks. Rapid Manufacturing works with a network of Australian CNC milling suppliers to provide competitive lead times across all states.
Is 5-axis CNC milling more expensive than 3-axis?
5-axis milling machines have higher hourly rates than 3-axis machines. However, for complex parts requiring multiple setups on a 3-axis machine, 5-axis is often cheaper overall — it eliminates multiple setups, reduces fixturing costs, and improves accuracy (no re-referencing error between setups). For simple flat parts with features on one or two faces, 3-axis is more cost-effective. For complex parts with undercuts, compound angles, or features on 3+ faces, 5-axis usually wins on total cost.
Ready to Quote Your CNC Milling Project?
Upload your STEP file and receive a quote within 2 business days. Free DFM analysis included.
Get Your Free Quote →