CO2, fiber, and diode laser engraving patterns are all black. To make your products more attractive, try color laser engraving. A color laser engraver can make your products more colorful. However, laser engraving color fill is rare. To learn more about color engraving, let's discuss various common problems in depth.
In this article

1. What is color laser engraving?
2. How does color laser engraving work?
3. The best color laser engraving machines
4. Conclusion

What is color laser engraving

Color laser engraving is an engraving technique that uses special laser equipment to create colored marks on the metal. The MOPA laser is a special laser source for color engraving. It controls the laser frequency and pulse width to achieve color marks on the metal.
If you want to complete the color engraving on acrylic, fabric and wood, you can also use other measures.

How does a color laser engraving work

There are usually two main ways in which we want to achieve color engraving:

1. purchasing a Mopa laser source, developed and produced specifically for color marking.
2. color marking on non-metallic materials using colorants or colored cardboard.

The following is a discussion of how both work:

Color laser engraving on metal

Mopa laser engraving on brass

Mopa laser engraving on stainless steel

The main principle of metal color engraving is the oxidation of the metal. Different metal materials will form different colors after oxidation. The same metal with varying parameters of marking will also produce different colors.
Mopa is characterized by the fact that it can set the pulse width and frequency individually without affecting the other parameters of the machine. You can set different pulse widths, frequencies, and speeds to achieve colored marking on metal.
We sometimes choose the lenticular engraving method to fill large areas with metal. In lenticular engraving, the image is created similarly to how ink is applied to an inkjet printer. When the laser beam falls on the metal, the metal starts to melt, and then oxidation occurs. When the engraving is complete, it also appears in a different color than traditional engraving.
Color can easily achieve laser engraving on most metals, including brass, stainless steel, and titanium, by purchasing a Mopa fiber laser engraver.
Note: ordinary fiber laser cutters or diode laser engravers do not allow color engraving.

Color laser engraving on non-metals

There is currently no laser technology available for color engraving on non-metallic materials. If you want to engrave colored wood, acrylics, etc., you can use colorants such as coloring powder or colored cardboard as an aid.

You can color fill laser engraved acrylics or glass with colored cardboard, stains, and paints.
For color fill laser engraved wood, color fill powder and colored cardboard can be used as a color filler for easy cleaning.
To color fill laser engraved wood, proceed as follows:
First, engrave the design on a clean board.
The coloring is then spread evenly over the engraved area of the board and re-engraved in the same way.
Some coloring powder is left in the engraved area, after which the excess powder is cleaned up.

Best MOPA laser engravers for color marking (2026)

Color laser engraving on metal requires a MOPA fiber laser source. Standard fiber lasers and diode lasers cannot produce stable, repeatable color results on bare metal regardless of how their parameters are adjusted. Two current GWEIKE MOPA platforms cover the most common use cases:

For a detailed breakdown of what the G6 MOPA can do — including which power (30W, 60W, or 100W) fits different applications — see the G6 MOPA use cases and power guide.

Conclusion

Color laser engraving can make a product more attractive. If you want to start a small business, color engraving can make your products more competitive. The engraving machine uses dye reagents and colored stickers to achieve laser engraving color fill easily.