Dynamic Focus CO2 Platform

Large Format 3D CO2 Laser Marking Machine

Q: What is a 3D CO2 laser marking machine?

It generates the beam from a CO2 gas medium and can vary mark depth across a surface. Unlike a 2D marker it engraves on slopes, cylinders, cones and other complex shapes, so the same head handles flat and three dimensional work.

Q: Which materials can a 3D CO2 marker handle?

Paper, wood, fabric, plastic, glass, leather, stone and rubber are all suitable organic materials, and some metals can be marked as well. That range makes the machine useful across many production lines.

Q: How does 3D marking differ from 2D marking?

A 2D system keeps one consistent depth across the whole surface, while 3D marking varies depth, width and height to suit curved and irregular parts.

Q: Which industries use 3D CO2 marking most?

Automotive, electronics, aerospace, consumer goods, medical devices and mould making all rely on it for serial numbers, barcodes, QR codes and logos.

Q: What are the advantages of a 3D CO2 machine?

High precision, high speed and the ability to work across different shapes and materials, all with a non-contact beam that leaves the surface almost untouched.

Q: Can it mark curved or irregular surfaces without a rotary attachment?

Yes. The dynamic focus system follows the surface during the job, so no rotary axis is needed for curved or uneven parts.

Q: What wavelength does the CO2 laser use?

CO2 lasers operate at roughly 10,600 nm, a wavelength that organic materials absorb well because of their heat absorption behaviour.

Q: Can it mark transparent materials such as glass?

Yes. Because CO2 lasers absorb heat strongly, they mark transparent materials such as glass effectively, unlike some other laser types.

A 100W CO2 glass-tube marker built around a 30-point 3D lens system and an interference-isolated head. With a working area from 600 x 600 mm up to 1200 x 1200 mm, the dynamic focus optics ride the height changes of the part instead of demanding a flat surface.

100WCO2 laser power

600–1200 mmMarking area

10.6 μmWavelength

10,000 mm/sTop marking speed

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Large format 3D CO2 laser marking machine with dynamic focus head

Large format 3D CO2 laser marker working across a wide panel — The beam climbs and dips with the part instead of waiting for a flat bed.

The Flat Lens Problem

Why a Flat Lens Cannot Follow a Curved Part

A conventional 2D lens holds one focal plane. Put a moulded panel, a tapered container or a conical fitting underneath it and the mark drifts out of focus the moment the surface rises or falls.

One focal plane, one heightAnything taller or shorter than the set distance loses depth and contrast across the same job.
Rotary axes need round partsA rotary attachment suits a cylinder, but not a free-form surface that curves in two directions.
Fixturing hides the problemShimming every part flat adds labour and still cannot fix a genuine dome or taper.
3D focus removes the constraintThe head corrects focus in real time, so height variation stops being an obstacle.

Principle of Operation

Four Things the Dynamic Focus Head Actually Does

The 3D lens system is the reason this machine exists. Here is what changes at the workpiece when focus becomes a moving variable.

Tracks Surface Height

The 30-point lens corrects the focal position as the part rises or falls, so depth stays consistent across a dome, taper or cone.

Varies Depth on Purpose

Because focus is adjustable, a single file can engrave shallow text and deep relief without a second setup pass.

Isolated Against Noise

An interference-isolated design keeps the optical path stable, so the focus correction is not disturbed by electrical noise on the floor.

Keeps the Tube Efficient

Matching the focal point to the surface keeps the glass tube in its most efficient working range, which reduces wear and wasted energy.

Key Numbers

The Numbers Behind the KR-LC100-3D Platform

Four figures that tell you whether this machine matches the parts on your floor.

100WRated CO2 output power

1200mmLargest marking area side

1400WMaximum thermal load

1.2M²Beam quality, lower is better

Spot Below 0.01 mm

The focused spot stays under 0.01 mm, and the minimum line width reaches 0.012 mm for crisp, durable detail.

0–100% Modulation

Working frequency is adjustable across the full 0–100% range, so the same head covers deep engraving and light marking.

Water-Cooled Head

A water circuit carries the 1400W peak thermal load away from the optics, which keeps focus stable through long shifts.

Curved Surface Gallery

Curved, Tapered and Uneven: Real Marked Parts

These are the geometries that send 2D markers back to the drawing board, and the ones the 3D head was built to take in its stride.

CO2 laser marked sample on a curved surface

Laser engraving sample with variable depth

3D scanning head marking a contoured part

Marked panel with consistent depth across the surface

Key optical parts used for 3D focus correction

Large format 3D CO2 laser marking machine in the workshop

Samples are produced on paper, wood, leather and coated panels. Send us a part and we will return the marked result with the focus settings we used.

Technical Data

Full Datasheet: KR-LC100-3D

Every figure below is taken from the machine datasheet. Options are confirmed against your part before production.

Technical specifications of the large format 3D CO2 laser marking machine KR-LC100-3D
Parameter	KR-LC100-3D
Rated Output Power	100W
Power Stability	±4%
Laser Source	Davi
Galvanometer	3D FWWLTEK
Wavelength	10.6 μm
Marking Area	600 × 600 mm / 800 × 800 mm / 1200 × 1200 mm
Beam Quality	M2 < 1.2
Beam Diameter (1/e²)	2.5 mm
Working Frequency	0–100%
Focused Spot Diameter	< 0.01 mm
Minimum Line Width	0.012 mm
Input Voltage / Current	48V / 30A
Maximum Thermal Load	1400W
Cooling Method	Water-cooled
Marking Speed	Up to 10,000 mm/s

The datasheet lists the marking area as a range of three options. The standard frame is built to the area you specify, and the interchangeable field lens is confirmed at order stage.

Operating Routine

From Artwork to Finished 3D Mark

The machine arrives assembled and tested. A 3D job normally adds one extra step compared with a flat mark: telling the head how the surface changes.

Load the Model

Import artwork and, for a true 3D job, the surface description, so the software knows where the part rises and falls.

Set the Focus Band

Define the height range the head must cover. The 30-point lens then corrects focus continuously inside that band.

Run the Mark

Mark at up to 10,000 mm/s. Depth, width and height change together to suit the contour of the part.

Verify Contrast

Compare the result against the approved sample, then confirm the mark depth is even at both the highest and lowest points.

Material Coverage

Materials the CO2 Beam Was Built For

The 10.6 μm wavelength is absorbed strongly by organic materials, which is exactly why it suits the applications below.

Wood, Paper & Card

Engraved detail and cut shapes for woodworking, packaging and paper goods, with clean edges straight off the bed.

Textiles & Leather

Fine patterns and lettering on fabric, leather and accessories, marked without contact so the material is never distorted.

Plastics, Glass & Stone

Plastic, glass, stone and rubber all take a permanent CO2 mark, including transparent glass that some lasers struggle with.

“We mark moulded panels that used to need a jig for every variant. The 3D head reads the surface itself, so we load the part, run the file and the depth is even from the flat centre out to the curved edge.”

Tooling Engineer · Consumer packaging, Germany

FAQ

3D CO2 Laser Marking: Common Questions