CO₂ Laser vs Fiber Laser
Compare material compatibility, engraving result, cutting ability and suitable applications before choosing a laser process.
Quick answer
Choose a CO₂ laser for materials such as acrylic, wood, paper, leather, rubber and selected coated products. Choose a fiber laser for marking or engraving bare metals, many coated metals, jewellery, tools and selected plastics. The correct laser depends mainly on how the material absorbs the laser wavelength.
Key differences
- CO₂ lasers are widely used for organic and non-metal materials.
- Fiber lasers are highly effective for marking many metals.
- CO₂ lasers can cut acrylic, wood, card and selected materials.
- Fiber lasers are commonly used for fast metal marking and detailed engraving.
- Not every plastic is safe or suitable for laser processing.
- The visible engraving colour depends on the material and coating.
- A sample test is recommended for unfamiliar products.
What is a CO₂ laser?
A CO₂ laser uses a gas-based laser source that produces infrared energy commonly absorbed by acrylic, wood, paper, card, leather, rubber and many other non-metal materials.
It is widely used for cutting shapes, engraving text, creating signs, producing wooden gifts and decorating coated products.
What is a fiber laser?
A fiber laser uses a solid-state laser source whose wavelength is strongly absorbed by many metals. It is commonly used for marking, engraving, serial numbering and detailed identification.
Depending on the material and laser settings, it can create dark marks, light marks, surface removal or deeper engraving.
CO₂ and fiber lasers compared
CO₂ Laser
Commonly selected for cutting and engraving acrylic, wood, paper, leather and other compatible materials.
- Excellent for acrylic cutting and engraving
- Suitable for wood and paper products
- Can cut many sheet materials
- Useful for signs and decorative products
- Limited on bare metal without special preparation
Fiber Laser
Commonly selected for fast and detailed marking on metal and selected industrial plastics.
- Excellent for many bare metals
- Suitable for serial numbers and QR codes
- Fast marking on small products
- Can remove or alter metal coatings
- Not normally used for cutting thick acrylic or wood
CO₂ vs fiber laser comparison table
| Feature | CO₂ Laser | Fiber Laser |
|---|---|---|
| Common materials | Acrylic, wood, paper, leather and rubber | Steel, aluminium, brass and selected plastics |
| Metal marking | Limited unless coated or treated | Highly suitable for many metals |
| Acrylic cutting | Very suitable | Generally not suitable |
| Wood cutting | Suitable within machine capability | Generally not suitable |
| Fine serial numbers | Possible on compatible materials | Excellent on suitable metals |
| Typical engraving depth | Depends on organic material and power | Surface marking or deeper metal engraving |
| Common products | Signs, gifts, boxes and craft products | Tags, tools, jewellery and metal products |
Which laser suits different materials?
Clear Acrylic
CO₂ laser is normally used for cutting and creating a frosted engraved effect on acrylic.
Stainless Steel
Fiber laser is generally suitable for permanent marking, serial numbers and detailed logos.
Wood
CO₂ laser can engrave text and graphics or cut compatible wood sheets within machine limits.
Coated Tumbler
Either laser may remove selected coatings, depending on the coating, base material and required result.
Metal Nameplate
Fiber laser provides detailed, repeatable marking for logos, data, barcodes and identification.
Leather Product
CO₂ laser is commonly used, but genuine and synthetic leather should be identified and tested first.
Can a CO₂ laser engrave metal?
A standard CO₂ laser is normally not the first choice for engraving bare metal because much of its energy is reflected rather than absorbed.
It may remove paint, anodised coating or another surface layer from metal products. Special marking compounds may also allow selected marks on compatible metal surfaces.
Can a fiber laser engrave acrylic or wood?
Fiber lasers are not normally used for cutting clear acrylic or engraving ordinary wood because these materials do not absorb the fiber wavelength in the same way as metal.
Selected coloured plastics may react to fiber marking, but each material must be tested.
Marking vs engraving
The terms are related but not always identical
Surface marking
The laser changes the colour, coating or surface appearance without removing a large amount of material.
Engraving
Material is removed to create a visible recess or deeper physical mark.
Etching
A shallow surface change is created, often with less depth than conventional engraving.
Customers often use these terms interchangeably, so the desired depth and appearance should be confirmed.
Engraving colour and appearance
Coated metal
Removing the coating may reveal silver or another base colour underneath.
Stainless steel
Fiber settings may produce dark, light or engraved marks depending on the material and process.
Wood
CO₂ engraving may create brown or darkened areas, with variation caused by grain and resin.
Acrylic
CO₂ engraving commonly produces a frosted or white appearance on clear acrylic.
Cutting capabilities
CO₂ laser cutting
CO₂ lasers can cut acrylic, card, paper, wood and other approved materials within the machine’s power and thickness limits.
Edge quality depends on material thickness, laser power, speed, focus, airflow and protective film.
Fiber laser cutting
Compact fiber-marking systems are normally used for engraving and marking rather than cutting thick metal sheets.
Industrial fiber-cutting machines are a different class of equipment designed for metal fabrication.
Speed and production quantity
Fiber lasers are often very fast for small metal logos, serial numbers and data marking. A jig can hold multiple products for repeat positioning.
CO₂ production time depends on whether the job involves surface engraving, detailed artwork or cutting long outlines through sheet material.
Artwork preparation
Vector files
Vector artwork is preferred for logos, text, cut paths and precise line engraving.
Black and white artwork
Simple monochrome artwork helps define which areas will be marked, engraved or cut.
Photographic engraving
Photographs may require grayscale conversion, dithering and contrast adjustment for the selected material.
Minimum detail
Tiny lines and gaps may merge or disappear depending on focus, material and engraving depth.
Cutting paths
Cutting files should use clean closed vector paths with unnecessary duplicate lines removed.
Product dimensions
Artwork must fit the actual engravable area, not only the overall product size.
Material safety
Not every material should be placed inside a laser machine. Some plastics and composites may release corrosive, toxic or harmful fumes.
Unknown materials should be identified before processing. Adequate extraction, filtration and fire monitoring are also essential.
Common selection mistakes
Choosing by product colour
The actual material and coating matter more than how the product appears externally.
Expecting full colour
Laser engraving normally creates material-dependent shades rather than printed full colour.
Assuming all metal is the same
Stainless steel, aluminium, brass and coated metals can react differently.
Ignoring coatings
Paint, anodising, powder coating and protective films affect the final mark.
Using unsafe plastic
Unknown plastic should not be laser processed until its composition is confirmed.
Skipping a test
Product batches may have different coatings and produce different engraving results.
How to choose the correct laser
Choose CO₂ when
The product is acrylic, wood, paper, leather, rubber or another approved non-metal material.
Choose fiber when
The product is bare metal, jewellery, a metal tool, nameplate or industrial identification item.
Either may work when
A coated metal product can be marked by removing the coating, subject to the required result.
Request testing when
The material, coating, plastic type or desired mark colour is uncertain.
What Image Magic recommends
- Use CO₂ laser for acrylic, wood, paper, leather and approved non-metal materials.
- Use fiber laser for bare-metal marking, serial numbers, jewellery and industrial tags.
- Confirm the product’s exact material and coating.
- Provide a physical sample for unfamiliar products.
- Use vector artwork for logos, text and cut lines.
- Approve a test result before producing a large quantity.
Frequently asked questions
Which laser is best for engraving metal?
Fiber laser is generally the preferred option for many bare metals and industrial metal markings.
Which laser is best for acrylic?
CO₂ laser is normally used for acrylic cutting and frosted acrylic engraving.
Can a CO₂ laser engrave a metal tumbler?
It may remove a compatible painted or coated layer to reveal the metal beneath. Bare-metal marking is generally better suited to a fiber laser.
Can a fiber laser engrave wood?
Fiber lasers are generally not selected for ordinary wood. CO₂ lasers are more suitable for most wooden products.
Can laser engraving produce colour?
Results normally depend on the material reaction. Selected metals may produce different shades under controlled settings, but it is not the same as full-colour printing.
Which laser is better for serial numbers?
Fiber laser is usually preferred for fast, detailed and permanent serial marking on compatible metal products.
Not sure which laser your product requires?
Send us your product sample or clear photos, exact material, dimensions, quantity, artwork and required finish. Our team will recommend a suitable laser process.
Ask Our UV DTF & Laser Team