CNC vs. Laser Cutter: What's the Difference?

You've been picturing this specially made part for ages — the perfect piece to finish your manufacturing job. And then you open the box only to discover the part doesn't fit because the cuts aren't as precise as they need to be. It is now that you might ask yourself: CNC vs. laser cutter — what's the difference, and which one should I choose?

How CNC Routing and Laser Cutting Are Similar

Both types of machines are controlled by Computer Numerical Control (CNC) systems. You can expect both to produce highly accurate end products with precise cutting capabilities. The key differences come down to how they cut and how fast they work.

The Key Difference: Contact vs. Non-Contact

A CNC router uses physical contact — router bits and rotating blades — to remove material. The machine follows computer instructions to guide those bits along the programmed pattern.

A laser cutter uses a focused beam of light (heat) to cut or engrave. There's no physical contact between tool and material. The laser passes through a lens and cuts based on a computer-programmed pattern.

Because CNC routers have more moving parts and rely on contact cutting, they tend to be slower than lasers.

Advantages of Laser Cutting

Laser cutting machines can cut through many types of materials, including rigid metals. They offer high accuracy, low lead times, and can handle runs of any size without compromising quality. And even though a laser produces heat, the cut material rarely warps or gets damaged.

Lasers can also engrave — something CNC routers cannot do.

Advantages of CNC Routing

CNC routers excel at making smooth curves and cutting through complex materials. The smooth finish on curves produces straight, clean edges that are hard to achieve with other methods.

Which Is Better for Your Project?

The right choice depends on depth of cut, material type, turnaround time, and whether you need engraving. For most metal cutting projects, laser cutting offers the best combination of speed, precision, and cost-effectiveness.

At JFD Cutting, we operate both a Trumpf 6kW 5040 and a Bodor C3 6kW fiber laser. If you're not sure which cutting method is right for your project, we're happy to recommend the best approach.