Copper is a widely used metal known for its excellent conductivity, corrosion resistance, and aesthetic appeal. However, marking or engraving copper can be challenging due to its reflective nature. If you’re wondering whether you can laser engrave copper, the answer is yes—with the right equipment and settings.
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This guide will walk you through the process, challenges, and best practices for laser engraving copper.
Understanding How To Laser Engrave Copper
Laser engraving is a precise and permanent method of marking materials using focused laser beams. Unlike traditional marking techniques such as ink or etching, laser engraving creates a durable mark that resists fading, wear, and corrosion.
Copper, however, poses unique challenges for laser engraving due to its high reflectivity and heat conductivity. Without the right laser type and settings, much of the laser energy is reflected away, reducing engraving efficiency.
Best Lasers for Engraving Copper
Laser engraving copper can be challenging due to its high reflectivity and thermal conductivity. However, with the right laser type, you can achieve precise, high-quality markings. Below, we discuss the best laser engravers for copper and their advantages.
UV Laser Engraver
Engraving Method: Direct Surface Marking
Best For: High-detail engraving, electronics, jewelry, and fine text.
UV laser engravers are one of the most effective tools for engraving copper. They operate at a short wavelength (355nm), allowing copper to absorb the laser energy efficiently rather than reflecting it. This results in precise and high-contrast engravings without excessive heat buildup. UV lasers are ideal for delicate, detailed work such as circuit board markings, jewelry customization, and intricate logos.
Pros:
- Minimal heat impact, reducing material distortion
- High precision for intricate details
- Excellent absorption by copper
Cons:
- Higher initial cost
- Slower engraving speed compared to fiber lasers
Fiber Laser Engraver
Engraving Method: Direct Surface Marking
Best For: Industrial applications, deep engraving, permanent markings.
Fiber lasers operate at a wavelength of 1064nm, which is highly effective for metal engraving. They deliver high-energy bursts that remove copper material directly, creating deep and lasting engravings. This type of laser is commonly used in industrial applications where durability and precision are essential. High-powered (50 – 100 Watts) or pulsed fiber lasers can improve engraving effectiveness. Using a black marking agent can also improve absorption and engraving quality.
Pros:
- Powerful and fast processing
- Deep engraving capabilities
- Excellent for serial numbers, barcodes, and logos
Cons:
- Expensive initial investment
- Can overheat materials if not properly adjusted
Infrared Laser Engraver
Engraving Method: Direct Surface Marking
Best For: Metal Marking, jewelry and fine text.
Infrared lasers are another strong option for engraving copper. Operating in a similar range to fiber lasers, they offer precise control and high absorption rates for copper surfaces. These lasers are beneficial in fine-detail applications like jewelry customization and text, making them suitable for low-volume commercial marking needs.
Pros:
- Good absorption on copper, reducing reflection issues
- Highly precise for detailed marking
- Minimal surface damage due to controlled energy output
Cons:
- Less common than fiber and UV lasers
- May require fine-tuning for optimal results
CO₂ Laser Engraver (With Marking Agent)
Engraving Method: Surface Marking with Marking Agent
Best For: Light engraving, branding, artistic designs.
CO₂ lasers (typically 40W-100W) are not naturally absorbed by copper, so they require a marking agent (such as Brilliance Laser Inks) to create a visible mark. The marking spray acts as an absorbent layer, allowing the CO₂ laser to produce a surface-level engraving without cutting into the metal.
For laser marking copper using a marking spray, a minimum of 50W CO2 laser power is recommended. However, for better results and higher efficiency, an 80W or higher CO2 laser is ideal. Higher wattage ensures better absorption of the marking agent, producing clearer and more durable markings.
Pros:
- More affordable than fiber and UV lasers
- Widely available and versatile
- Suitable for decorative and branding purposes
Cons:
- Requires an additional marking agent
- No deep engraving—only surface marking
- Slower process compared to direct metal engraving
Diode Laser Engraver (With Marking Agent)
Engraving Method: Surface Marking with Marking Agent
Best For: DIY projects, small-scale marking.
Diode lasers (typically 5W-40W) have a much lower power output compared to fiber or CO₂ lasers, but they can still be used for marking copper when combined with a marking agent. While they are not ideal for deep engravings, they are a budget-friendly option for small projects and hobbyists.
For the best results when using a marking spray, we recommend a powerful diode laser (at least 20W—40W optical output).
Pros:
- Affordable and accessible for beginners
- Compact and easy to use
- Works on multiple materials besides copper
Cons:
- Requires marking spray for copper marking
- Slow marking process
- Limited marking depth and durability
Choosing the Right Laser To Engrave Copper
The best laser for engraving copper depends on your specific needs and budget:
- For industrial and deep engraving: Fiber lasers are the top choice.
- For high-detail, delicate work: UV lasers are best.
- For fine text and low volume applications: Infrared lasers work well.
- For hobbyists and light engraving: CO₂ and diode lasers with marking agents offer a budget-friendly alternative.
By selecting the right laser type, you can achieve high-quality, permanent engravings on copper with precision and efficiency.
Comparison Table: Best Laser For Engraving Copper
Feature | UV Laser Engraver | Fiber Laser Engraver | Infrared Laser Engraver | CO2 Laser Engraver (With Marking Agent) | Diode Laser Engraver (With Marking Agent) |
|---|---|---|---|---|---|
Marking Type | Direct Surface Marking | Direct Surface Marking | Direct Surface Marking | Surface Marking (With Marking Agent) | Surface Marking (With Marking Agent) |
Best For | High-Precision, Fine Engraving | Deep Metal Engraving, Industrial Use | Direct Marking on Copper | Budget-Friendly Marking with Spray | Entry-Level Marking with Spray |
Power Range | 5W – 10W | 50W – 100W | 2W | 50W – 100W | 20W – 40W |
Engraving Depth | Shallow to Medium | Deep | Surface Level | Surface Level | Surface Level |
Speed | Fast | Fast | Medium | Slow | Slow |
Heat Impact | Low (Cold Marking) | High | Medium | Medium | Medium |
Material Absorption | High (Efficient for Copper) | Medium (Reflectivity Issues) | High | Requires Marking Agent | Requires Marking Agent |
Cost | $$$$ (Expensive) | $$$ (Moderate to Expensive) | $$$ (Budget-Friendly) | $$ (Moderate) | $ (Most Affordable) |
Best Use Case | Precision engraving for jewelry, electronics | Industrial and deep engraving | High-contrast direct marking | General marking with Brilliance Laser Inks | Hobbyist and DIY projects |
Challenges of Laser Engraving Copper
High Reflectivity
Copper reflects a significant amount of laser energy, making it difficult to achieve deep engravings. Using UV lasers or applying a marking spray can improve absorption.
Heat Dissipation
Copper conducts heat quickly, which can affect engraving efficiency. Cold marking methods (such as UV lasers) prevent excessive heat buildup.
Surface Oxidation
When exposed to air, copper can oxidize, affecting the engraving process. Cleaning the surface before engraving ensures better results.
The Best Budget UV Laser To Engrave Copper
ComMarker 5W Omni 1 UV Laser
The Omni1 5W UV Laser Marking Machine is an affordable yet high-precision UV laser engraver, making it an excellent choice for engraving copper and various other materials. With two lenses (70mm × 70mm & 150mm × 150mm) and a rotary axis, this machine offers versatility and precision at a budget-friendly price.
Key Features & Specifications
- Laser Type: 5W UV Laser (355nm wavelength)
- Cooling System: Air Cooling
- Voltage: 110V
- Marking Speed: 0-10,000mm/s
- Engraving Accuracy: 0.0019mm
- Software Compatibility: BJJCZ Motherboard, supports EZCAD 2 and LightBurn
- Weight: 23.5kg (lightweight and compact)
What’s Included in the Box?
- 5W UV Laser Engraving Machine
- Two Marking Lenses (70mm × 70mm & 150mm × 150mm)
- Rotary Axis for Cylindrical Objects
- Foot Switch, Ruler & Lifting Platform
- Protective Goggles
- Preview & Placing Helpers
- Allen Wrench & Screws
- Power Adapter & Data Cables
- USB Driver (with EZCAD software)
Performance & Features
- One-Button Electric Focus Adjustment – No need for manual focus adjustments, making operation simple and efficient.
- Fast Positioning & Batch Marking – The dual red-light positioning system ensures precise engravings, and QR codes/barcodes can be automatically generated in sequence.
- High-Speed Engraving – Industrial-grade precision and 0.0019mm accuracy allow for detailed and fast engraving.
- Versatile Material Compatibility – Works on copper, gold, platinum, silver, aluminum, stainless steel, glass, plastic, wood, and more.
Pros & Cons
Pros:
- Budget-Friendly UV Laser – Offers high-end performance at an affordable price.
- Cold Light Laser Technology – Ideal for engraving heat-sensitive materials like copper without distortion.
- Compact & Lightweight – Easy to set up and store, perfect for small workshops or home use.
- Compatible with LightBurn & EZCAD 2 – Popular software support ensures smooth workflow integration.
- Rotary Axis for 360° Engraving – Allows engraving on round and cylindrical objects.
Cons:
- Limited Power (5W) – Not as powerful as industrial-grade UV lasers, making it less suitable for deep engraving on certain metals.
- No Built-in Exhaust System – May require additional ventilation for extended use.
Why the Omni1 5W UV Laser Marking Machine is a great option to laser engrave copper
The Omni1 5W UV Laser Marking Machine is the best budget UV laser engraver for those looking to engrave copper with precision and efficiency. With its cold light technology, electric focus system, and versatile material compatibility, it’s an excellent choice for hobbyists, small businesses, and professionals needing high-quality laser engraving at an affordable price.
If you’re looking for a cost-effective UV laser engraver that delivers industrial-grade precision, the Omni1 5W UV Laser is a fantastic investment.
How To Laser Mark Copper Using A Marking Spray
Laser engraving copper can be challenging due to its high reflectivity and thermal conductivity. However, Brilliance Laser Inks 12 Oz Laser Marking Spray – Black (BLI101) makes it easier to achieve high-contrast, permanent markings without damaging the copper surface.
This guide will walk you through the step-by-step process of laser marking copper using Brilliance Laser Inks with both an 80W CO2 Laser Engraver and a 40W Diode Laser Engraver.
Why Use Brilliance Laser Inks?
- High Contrast & Permanent Marks – Produces deep black engravings on copper.
- Easy Application & Cleanup – Sprays evenly and wipes off effortlessly after engraving.
- Compatible with Multiple Laser Types – Works well with CO2, diode, and fiber lasers.
- Heat-Resistant & Durable – Ensures long-lasting marks even in harsh environments.
What You’ll Need
- Brilliance Laser Inks 12 Oz Laser Marking Spray (BLI101)
- 50 – 80W CO2 Laser Engraver OR 20 – 40W Diode Laser Engraver
- Copper Sheet or Object
- Isopropyl Alcohol & Cloth (for Cleaning)
- Masking Tape (Optional, for Precision Masking)
- Ventilation or Fume Extractor (for Safety)
Brilliance Laser Inks 12 Oz Laser Marking Spray – Black (BLI101)
Step-by-Step Guide to Laser Engrave Copper
Step 1: Prepare the Copper Surface
- Clean the copper with isopropyl alcohol to remove dirt, oil, or oxidation.
- Dry the surface thoroughly with a lint-free cloth.
Step 2: Apply Brilliance Laser Inks (BLI101)
- Shake the Brilliance Laser Inks spray can for 30-60 seconds.
- Hold the can at a 45° angle, 6-8 inches away, and apply a thin, even coat over the copper surface.
- Let it dry for 3-5 minutes before engraving. Drying time depends on temperature and coating thickness. Use a hot air gun or blow dryer to speed up the drying process. Ensure the entire layer, not just the surface, is fully dry. Pre-warming the substrate before marking can enhance results.
Step 3: Laser Engraving Settings
Laser Type | Power | Speed | DPI/PPI | Passes |
|---|---|---|---|---|
80W CO2 Laser | 70-100% | 20-50 mm/s | 500 DPI | 1-2 |
40W Diode Laser | 90-100% | 500-1000 mm/min | 300 DPI | 1-2 |
Tip: Adjust settings based on your laser’s capabilities and the desired depth of engraving.
Create A Material Test Grid
A material test grid is a structured method used to identify the ideal laser settings for engraving, cutting, or marking a specific material. This process is particularly valuable when working with new materials or refining settings for different projects. By generating a grid with varying speed, power, and frequency settings, you can visually assess how each combination impacts the final result.
Important Considerations:
- The outcome may differ based on the laser machine’s wattage and the material’s thickness.
- Thinner materials disperse heat more quickly than thicker metals, which can influence engraving depth and quality. Thicker materials may require higher power and slower speeds for optimal results.
- Always test marking agents on a sample piece before applying them to your final material to ensure the best performance.
Step 4: Start Engraving
- Position the copper in the laser engraver’s work area.
- Adjust the focus to ensure a sharp engraving.
- Upload your design, text, or logo to the laser software.
- Run a test pass on scrap material before engraving your final piece.
- Engrave the copper, monitoring the process for best results.
Step 5: Clean & Finish the Engraving
- Allow the engraved copper to cool before handling.
- Wipe off excess laser marking spray using a damp cloth or isopropyl alcohol.
- Polish the surface for a clean and professional look.
Using Brilliance Laser Inks (BLI101) with an 50 – 80W CO2 Laser Engraver or a 20 – 40W Diode Laser Engraver allows you to mark copper with precision, contrast, and durability. While CO2 lasers offer faster marking, diode lasers are more budget-friendly and still effective.
If you need high-quality, professional-looking copper marking, investing in Brilliance Laser Inks and the right laser engraver can make all the difference.
Using a Diode Laser Engraver to Mark Copper
A diode laser can mark copper, but it requires special techniques to achieve good results. Copper is highly reflective and has high thermal conductivity, which makes it difficult for standard diode lasers to mark effectively. However, you can improve the results by:
- Using a High-Powered Diode Laser – A powerful diode laser (at least 20W – 40W optical output) with a laser marking spray.
- Applying Laser Marking Sprays – Coatings like Brilliance Laser Inks help the laser bond to the copper surface, creating a permanent mark.
- Multiple Passes & Slow Speed – Running the laser at low speed with multiple passes enhances marking clarity.
- Infrared Diode Lasers – Infrared (1064nm) diode lasers work better than standard blue (450nm) diode lasers for marking metals like copper.
For deep engravings, high-power fiber or UV lasers are more effective.
Using a 2W Infrared Laser Engraver to Mark Copper
Copper is a highly conductive and reflective metal, which makes it challenging to mark or engrave using traditional laser engravers. However, infrared (IR) lasers, particularly those with a wavelength of 1064 nm, have proven effective for marking copper.
Understanding Infrared Laser Marking on Copper
Infrared lasers operate at a wavelength of 1064 nm, which is in the near-infrared spectrum. Unlike visible light lasers, IR lasers have better absorption rates in metals, including copper. This allows them to create permanent marks without excessive heat buildup, which can cause unwanted material distortion.
Factors Affecting Infrared Laser Marking on Copper
- Wavelength Absorption – Copper has a low absorption rate for visible light lasers but responds well to infrared wavelengths. The 1064 nm IR laser is better suited for marking copper than CO2 or blue diode lasers.
- Power and Speed Settings – 2W IR Lasers can produce precise surface markings.
- Surface Preparation – Pre-treating the copper surface with marking sprays or oxidation techniques can enhance contrast and marking visibility.
- Cooling and Ventilation – Efficient cooling systems prevent excessive heat buildup, ensuring consistent engraving results.
Applications of Infrared Laser Marking on Copper
- Jewelry & Custom Engraving – Personalizing copper jewelry with intricate designs.
- Industrial Marking – Labeling copper parts for traceability.
Yes, an infrared laser can mark copper effectively, especially when using the correct wavelength and power settings. While IR lasers may not be ideal for deep engraving, they excel in surface marking and high-precision applications. Investing in a high-quality IR laser ensures consistent and durable results for copper marking projects.
Best Budget Infrared Laser for Marking Copper
LaserPecker LP4 Dual Laser Engraver
The LaserPecker LP4 is an excellent budget-friendly infrared laser engraver for marking copper and a versatile option for both business and personal use. Featuring a dual-laser system—a 2W infrared laser for metals and plastics and a 10W diode laser for wood, leather, glass, and ceramics—the LP4 can engrave on nearly all materials.
Its large working area (160 x 300 mm), along with optional rotary and slide extensions, allows for engraving round and irregular objects like tumblers, rings, and vases. With high engraving accuracy (1270 dpi) and an impressive speed of 240,000 mm/min, it produces sharp, permanent engravings with print-like quality.
Designed for flexibility, the LP4’s adjustable structure makes it easy to engrave objects of any shape or height. It’s compact and portable, making it ideal for home studios, businesses, and workshops. The user-friendly LaserPecker app and LightBurn compatibility make it simple to use, even for beginners.
With the ability to cut 8mm wood and 5mm acrylic, perform rust removal, and engrave on coated metals, the LaserPecker LP4 is an excellent all-in-one engraving solution for hobbyists and professionals alike.
What Are the Benefits of Laser Engraving Copper?
When it comes to engraving metals, laser engraving copper has a few advantages over other methods. These include:
High precision and accuracy
Laser engraving is much more precise than traditional engraving methods, so you can create very detailed designs. Although the laser beams are small, they’re powerful and precise enough to engrave copper with a tolerance range of 0.003 mm – 0.006 mm.
Most other engraving tools have a tolerance range of 1-3 mm, which is quite high in comparison.
Damage Prevention
Most people erroneously believe that the high heat from the laser will inevitably warp the material. However, the heat is non-contact and only affects a small portion of the material, so there’s no risk of damage.
Low Energy Consumption
Compared to other types of engraving machines, laser engravers do not have any other movable parts. As a result, it reduces the amount of energy consumed with each process. Also, the process is quite fast and saves time and power.
What Are the Drawbacks of Laser Engraving Copper?
There are a few drawbacks to laser engraving copper. One is that it can be difficult to get a consistent result when engraving multiple pieces of copper. There can also be a lot of variation in the results depending on the type of laser used and the settings that are chosen. Additionally, laser engraving can sometimes cause the copper to discolor or develop a patina.
Laser Marking Applications for Copper
Copper is a widely used material in a variety of industries, from electrical engineering to jewelry making. Its properties make it ideal for many applications, including laser engraving.
Laser engraving on copper is a popular choice for both industrial and personal applications. Copper is an excellent conductor of heat and electricity, making it ideal for electrical applications.
Additionally, its high resistance to corrosion makes it ideal for outdoor applications or those in harsh environments.
Jewelry makers also appreciate the beauty of laser engraved copper. The metal can be polished to a high shine, and the engraved design can be highlighted with different colors of paint or patina.
- Industrial Applications – Circuit boards, electrical components, and traceability markings.
- Decorative Items – Jewelry, plaques, and ornaments.
- Custom Gifts – Personalized keychains, nameplates, and trophies.
Tips To Laser Engrave Copper
Copper is a popular material for laser engraving and can produce stunning results. Here are some tips to help you get the best out of your laser engraving machine when working with copper.
- Use a UV laser for the best results.
- If using a low-power fiber laser, apply a black marking spray like Brilliance Laser Inks to improve contrast.
- Adjust laser power, speed, and frequency for optimal engraving depth.
- Clean the copper surface before engraving to remove oxidation and debris.
- Test settings on a scrap piece before engraving the final product.
Alternatives to Laser Engraving Copper
If you’re looking for an alternative to laser engraving copper, there are a few options available to you. One option is to use a chemical etching process. This involves using chemicals to remove the top layer of copper, revealing the underlying metal beneath.
Another option is to use a mechanical engraving process. This involves using a tool to physically remove the top layer of copper, revealing the underlying metal beneath.
One final option is to use a combination of both chemical and mechanical engraving processes. This allows you to create more detailed and intricate designs than either method could provide on its own.
Frequently Asked Questions
Can I laser engrave copper?
Yes, you can laser engrave copper, but due to its high reflectivity, it’s best to use a UV laser or apply a laser marking spray like Brilliance Laser Inks for better results with CO2 or diode lasers.
Is copper hard to engrave?
Yes, copper is hard to engrave due to its high reflectivity and thermal conductivity. Using a UV laser or laser marking spray with a CO2 or diode laser can improve engraving results.
How do you clean copper engraving?
To clean copper engraving, use a mild soap and water solution with a soft cloth or brush. For tarnish, apply a lemon and salt mixture or a vinegar and baking soda paste, then rinse and dry thoroughly. Avoid harsh chemicals that may damage the engraving.
Conclusion
You can laser engrave copper, but the process requires the right laser type and settings. UV lasers provide the best results, while fiber lasers can work with additional adjustments. Whether for industrial, artistic, or personalization purposes, laser engraving is a reliable way to create high-quality, permanent marks on copper.
By following the right techniques, you can achieve clean, precise engravings that stand out on this highly reflective metal.