What Is Laser Cutting?

Resources · Laser Cutting Basics

What Is Laser Cutting?

Laser cutting is a process that cuts material with a focused, high-energy laser beam guided by CNC, melting or vaporizing a narrow line so parts separate with a clean edge. This guide explains the basics, what it cuts, and where it fits.

01CNC-guided path
02Focused beam
03Narrow kerf
04Clean edge

This Guide

Find the answer faster

Jump straight to the part you need — how it works, what it cuts, where it fits, and which machine matches the job.

01

How It Works

Beam, kerf and assist gas, step by step.

02

What It Cuts

Metals and formats fiber lasers handle.

03

Where It Is Used

Fabrication, structural and precision parts.

04

Related Machines

Sheet, precision and tube cutting lines.

What this guide covers

The essentials a buyer needs before sizing a laser cutter.

CNC-guidedFiber & CO² sourcesMetal & non-metalSheet · plate · tubeAssist-gas cuttingClean edge quality

How It Works

A focused beam, guided by CNC

A CNC program guides a focused laser beam across the material. The beam concentrates energy on a small spot, melting or vaporizing a narrow kerf, while an assist gas clears the molten material so parts separate with a clean edge.

Laser cutting machine working principle diagram

Step By Step

The cutting process in four steps

From CNC path to finished edge, here is what happens as the head follows the program.

01
CNC Path

A CNC program defines the part path.

02
Focus

The laser focuses energy to a small spot on the material.

03
Melt / Vaporize

The beam melts or vaporizes a narrow kerf as the head follows the path.

04
Assist Gas

Assist gas clears the molten material for a clean edge.

What It Cuts

What laser cutting cuts

For metal, fiber lasers cut a wide range of alloys in sheet, plate and tube. Capacity depends on power.

Carbon steel
Stainless steel
Aluminum
Copper
Brass
Sheet, plate & tube

Capacity depends on power; see our metal laser cutting range.

Explore The Range

Related laser cutting machines

Match the machine to your material and format — sheet, precision or tube.

All cutting machines →

Sheet

Sheet metal laser cutting machine

Sheet Metal Laser Cutting

Flat-sheet and plate cutting for carbon steel, stainless and aluminum.

Precision

Precision laser cutting machine

Precision Laser Cutting

Fine-feature and small-part cutting where edge quality and tolerance matter.

Tube

Tube laser cutting machine

Tube Laser Cutting

Tube and profile cutting for round, square and rectangular sections.

Applications

Where laser cutting is used

A clean, CNC-guided edge suits fabrication, structural work and precision parts alike.

All resources →

Sheet-metal fabrication
Structural and machinery parts
Signage
Tube and profile work
Precision components

Applications shown are typical for fiber laser cutting.

From Our Team

“Fiber has become the default for metal cutting for good reason — but the right choice still depends on your thickness range and throughput. We help buyers size the machine to the actual job, not the brochure.”

Wang Jiachao — Senior Laser Equipment Engineer, Technical Department Manager · 16 years experience

Keep Exploring

From guide to machine selection

Ready to match a machine to your job? Continue to the cutting lines and related guides.

Sheet Metal Laser Cutting

Flat sheet and plate, carbon steel to aluminum.

View machines →

Precision Laser Cutting

Fine features and tight-tolerance parts.

View machines →

Tube Laser Cutting

Round, square and rectangular profiles.

View machines →

Metal Laser Cutting

The full metal cutting overview by power.

View range →

How Laser Cutting Works

Go deeper on the physics of the process.

Read guide →

All Resources

Browse every laser cutting guide.

Browse →

Get Started

Talk to our laser cutting team

Tell us your material, thickness and throughput — we’ll help you size the right machine.

Request a Quote

info@topstarlaser.com · WhatsApp +86 150 7516 7267
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