If you’ve ever wondered how much CNC machining actually costs, the short answer is: it usually falls between $35 and $120 per hour, depending on machine type, complexity, material, and labour. That’s the quick snapshot—but the story behind those numbers is where things get interesting. Because anyone who’s ordered a CNC part knows the quote can swing wildly, and understanding why helps you make sharper decisions.
What factors influence CNC machining costs?
Machine type and size
A small 3-axis milling machine will be at the lower end, often $35–$60 per hour. Multi-axis machines, such as 5-axis or high-precision lathes, can easily push costs above $100 per hour.
Labour and setup time
Even though CNC stands for Computer Numerical Control, humans still drive much of the cost. Operators, programmers, and quality inspectors all add to the bill. Setup can take hours for complex parts—time you pay for before a single chip is cut.
Materials
Aluminium is relatively forgiving and cheap. Titanium, stainless steel, or exotic alloys? Expect higher tool wear, slower cutting speeds, and steeper invoices. The material isn’t just raw cost—it dictates machining time.
Volume of production
One-off prototypes are pricey because setup costs aren’t spread across multiple parts. Run a batch of 500, and the per-part cost plummets.
Finishing and tolerances
A basic functional part may be done after machining. But add polishing, anodising, powder coating, or ultra-tight tolerances, and the total can increase by 20–50%.
Is CNC machining cheaper overseas?
Yes and no. China, India, and parts of Eastern Europe often advertise CNC machining at half the hourly rates of Australia or the US. But you need to weigh freight, tariffs, longer lead times, and potential issues with quality control. For critical industries—like aerospace or medical devices—local shops with ISO certifications often justify the premium.
Why do quotes vary so much between shops?
It comes down to three things: machine efficiency, shop overheads, and how hungry they are for work. A high-end facility with brand-new multi-axis machines may charge more, but they can also cut parts faster and with fewer errors. Smaller shops may quote lower, but longer cycle times or rejected parts can eat into savings.
Here’s a rough breakdown:
| Factor | Low-Cost Shop | High-End Shop |
|---|---|---|
| Hourly Rate | $35–$60 | $90–$120+ |
| Tolerance Capability | ±0.1 mm | ±0.005 mm |
| Lead Time | Longer | Faster |
| Risk of Rework | Higher | Lower |
That’s why comparing just the hourly rate can mislead—total project cost depends on efficiency as much as sticker price.
What’s a realistic budget for CNC work?
For hobbyists and small businesses, a simple aluminium part might cost $50–$150. For engineering firms, complex aerospace or medical-grade components could run into the thousands per part. Many engineers I’ve spoken with treat CNC quotes the way tradies treat building quotes: you get three, throw out the outlier, and go with the one who feels both capable and trustworthy.
And here’s the kicker—CNC shops often remember clients who respect their craft. In persuasion terms, that’s reciprocity at work. Treat the machinist as a partner rather than a vendor, and you’re more likely to see flexibility on pricing, faster turnaround, or that urgent “favour” squeezed in.
FAQ
Is CNC machining cheaper than 3D printing?
Not always. For complex geometries in small quantities, 3D printing can be more cost-effective. For precise, durable parts in medium-to-large runs, CNC usually wins.
Can I reduce CNC costs?
Yes—simplify your design, choose machinable materials, increase order quantities, and accept reasonable tolerances where possible.
What’s the hidden cost most people miss?
Post-processing. Anodising, polishing, or coating can add 20–50% on top of machining costs.
At the end of the day, CNC machining isn’t cheap, but it offers unmatched precision and repeatability. Anyone who’s held a freshly cut titanium part knows the quiet satisfaction it brings—it feels like engineering at its purest. If you’d like a detailed look at how these costs are calculated per hour, this CNC Machining guide breaks it down further. For industry data and standards, you can also explore resources from SME Manufacturing.
It leaves you wondering: maybe the real cost isn’t just dollars per hour, but the value of precision when nothing less will do.