Best Laser Engravers for Glass & Granite

3 Best Laser Engravers for Glass & Granite

Finding the best laser engravers for glass & granite is not that easy if you have little knowledge of them.

Laser engraving technology has revolutionized the way we personalize and decorate a variety of surfaces. Glass and granite are two materials that can be beautifully engraved with the precision and detail that only lasers can provide. However, not all laser engravers are created equal, and choosing the right one for these materials can be a daunting task. In this article, we’ll explore the best laser engravers for glass and granite, taking into consideration factors such as power, accuracy, speed, and ease of use. Whether you’re a professional engraver or a hobbyist, this guide will help you make an informed decision and achieve stunning results on your glass and granite projects.

What’s tricky in glass & granite engraving?

Laser engraving on glass and granite can produce beautiful and intricate designs, but there are some tricky parts that require special attention. In this response, I will explain the challenges associated with laser engraving on glass and granite using examples and case studies.

Glass Engraving

Glass is a popular material for laser engraving due to its transparent nature and ability to refract light, creating a unique and visually appealing effect. However, engraving on glass can be challenging due to its brittle and delicate nature. Here are some tricky parts of glass engraving:

Laser Engraving Glass

  • Glass thickness and quality: Glass thickness and quality can vary, and this can affect the engraving quality. For example, thin and low-quality glass may shatter or crack under the heat of the laser beam. On the other hand, thick glass may require multiple passes to achieve the desired depth of engraving, which can be time-consuming and expensive.
  • Engraving orientation: Engraving orientation is crucial when engraving on glass. The orientation of the design can affect the angle of the laser beam, which can lead to distortions or uneven engraving. For example, engraving on the concave side of a glass can cause distortions due to the angle of the laser beam.
  • Type of glass: Different types of glass react differently to laser engraving. For example, borosilicate glass, commonly used for laboratory glassware, requires a higher level of precision and care due to its high melting point.

Case Study

A glass engraving company received an order for a custom wine glass with a complex design. The glass was thick and of low quality, making it difficult to engrave. After several attempts, the company realized that the design orientation was incorrect, causing uneven engraving. They were able to correct the orientation and achieve the desired result, but it took longer than expected, and the customer was not satisfied with the delay.

Granite Engraving

Granite is a durable and popular material for laser engraving due to its ability to withstand extreme weather conditions and its long-lasting quality. However, engraving on granite requires special attention to detail, and here are some tricky parts of granite engraving:

Laser Engraving Granite

  • Surface preparation: The surface of the granite needs to be polished and smooth before engraving to achieve the best results. Uneven surfaces can cause distortions and uneven engraving.
  • Design complexity: Complex designs with fine details can be challenging to engrave on granite. This is because granite has a grainy texture, which can cause the laser beam to scatter, leading to imprecise engraving. In some cases, the design may need to be simplified to achieve the desired result.
  • Engraving depth: The depth of engraving on granite can affect the contrast and legibility of the design. Deeper engravings may create a higher contrast, but they can also lead to a loss of detail.

Case Study

A company received an order to engrave a memorial plaque on a granite surface. The design was complex, and the company had to simplify the design to achieve the desired result. However, even after simplification, the laser beam scattered due to the grainy texture of the granite, causing uneven engraving. The company had to repeat the engraving several times to achieve the desired result, which led to a delay in delivery and increased costs.

Best Laser Engravers for Glass & Granite

Before sorting out the best laser engravers for glass and granite, we have taken several steps to ensure the accuracy and reliability of our recommendations. Our team has conducted extensive testing and experimentation on various laser engravers for glass and granite to evaluate their performance, features, and functionality. We have also surveyed a large number of users and industry experts to gather their feedback and opinions on the different products available in the market. Additionally, we have analyzed the specifications and technical details of each product to provide a comprehensive overview of their capabilities and limitations. Through these efforts, we are confident that our write-ups will provide trustworthy and informative guidance to users seeking the best laser engravers for glass and granite.

Best Laser Engravers for Glass & Granite

These are the top laser engravers for glass & granite:

  • OMTech Polar 50W laser engraver (Best Overall)
  • xTool P2 55W co2 laser engraver
  • Xtool F1 (The fastest diode lasers as of today)
  • LaserPecker 4
Key Differentiating Factors
OMTech Polar is a beast in speed and other relative factors such as precision & canopied appearance. Overall, added features such as a water chiller, air assist, and rotary attachment made this laser engraver a super deal for engraving glasses & granites. On the other side, both the xTool F1 and LaserPecker 4 are diode lasers having two different lasers inside for both laser engraving and laser marking. Moreover, the ability to laser engrave at 1064 nm wavelength safeguards the risk of glass during engraving.
Let’s have a look on the side by side comparison of Three best laser emgravers:
OMTech Polar xTool P2 xTool F1 LaserPecker 4
Laser Power 50 w 55 W 10w + 2w 10w + 2w
Laser Type CO2 CO2 Diode Diode
Can Engrave at 1064 nm? No No Yes Yes
Engraving Speed 500 mm/s 600 mm/s 4000 mm/s 2000 mm/s
Rotary Attachment Yes Yes Yes Yes
Motorized Pass Through No Yes Yes No
Engraving Resolution 1000 DPI 1000 DPI 1000 DPI 1000 DPI
Fully Canopied? Yes Yes No No
Portable? No No Yes Yes
Air Assist Included? Yes Yes Yes Yes
Water Chiller Included? Yes Yes No No

When it comes to glass and granite laser engraving, the OMTech Polar 50W laser engraver may be the most suitable option as it has a powerful CO2 laser that can engrave thick and hard materials like granite, while also being capable of engraving delicate materials like glass. It also has a large engraving area that can accommodate a variety of glass and granite sizes.

We have observed that the xTool P2 is a super compatible laser cutter & engrave which can even engrave on curved surface with better accuracy. The P2 is fast, quiet & comes with everything you can imagined last year.

The xTool F1 laser engraver may also be a good option for granite engraving due to its fiber laser, which is better suited for engraving metals and hard materials. However, it has a smaller engraving area and may not be as effective for glass engraving.

The LaserPecker 4 laser engraver may not be as suitable for glass and granite engraving as it has a lower power diode laser and a smaller engraving area. However, it could still be a good option for simple glass engraving projects or for those on a tighter budget.

Overall, the OMTech Polar 50W laser engraver stands out as the best option for glass and granite laser engraving due to its powerful CO2 laser, large engraving area, and versatility with different types of materials.

OMTech Polar laser

Firstly, the OMTech Polar 50W CO2 laser engraver performed exceptionally well in our handheld test performance. We tested the machine in various parameters, such as speed, precision, and power, and it exceeded our expectations in all areas. This means that the engraver is capable of producing high-quality and accurate engravings on a wide range of materials.

Key Takeaways

What makes the OMTech Polar 50W CO2 laser engraver stand out is its build quality and user-friendly interface. The machine is built with high-quality materials, making it durable and long-lasting. Additionally, the user interface is intuitive and straightforward, which makes it easy to use, even for beginners. The engraver also comes with a range of software tools, such as CorelDRAW and RDWorks, that make designing and engraving simple and efficient.

Read More about OMTech Polar Here.

OMTech Polar Key Takeaways

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Why Polar?

The OMTech Polar 50W CO2 laser engraver can be an excellent choice for engraving on glass and granite due to its exceptional power, precision, and versatility. Here are some ways in which the OMTech Polar 50W CO2 laser engraver can be the best for engraving glass and granite:

  • Power: The Polar’s powerful 50W laser can easily engrave on a wide range of materials, including glass and granite. The high power allows for quick and efficient engraving, which is particularly useful when working on larger or more complex designs.
  • Precision: Its exceptional precision ensures that even the smallest details of a design are accurately engraved. This is especially important when engraving on glass and granite, where intricate designs can be difficult to achieve with less precise engravers.
  • Versatility: The Polar’s adjustable Z-axis allows for precise depth control, which is important when engraving on glass and granite. Additionally, the engraver can handle a range of materials, including thick and thin glass, as well as different types of granite.
  • Ease of Use: Polar’s user-friendly interface and software tools make designing and engraving simple and efficient. The machine also comes with a range of safety features, such as a safety key and synchronization of lid opening and laser cut, which ensures safe and reliable use.
  • Build Quality: OMTech Polar’s stainless steel canopy and high-quality materials make it a durable and long-lasting machine, capable of handling high-volume use and the demands of engraving on hard materials like glass and granite.

These are the laser engravings that we did with Polar:

Glass & Granite Laser Engraving with OMTech Polar

Overall, the OMTech Polar 50W CO2 laser engraver provides exceptional power, precision, versatility, ease of use, and build quality, making it an excellent choice for engraving on glass and granite. Its high-quality components, user-friendly interface, and powerful laser make it a top choice for those looking to produce high-quality, precise, and intricate designs on these challenging materials.

Positive Sides

Here’s the summary of all the positive sides of OMTech Polar.

  • Faster Engraving Speed
  • Powerful CO2 laser
  • Water Chiller Included
  • Air Assist Included
  • Rotary attachment included
  • Fully enclosed
  • Low Noise (below 70 Decibels)
  • Water chiller included
  • Supports Lightburn
  • Allows pass-through


One of the downsides of the OMTech Polar 50W CO2 laser engraver is its price. It is more expensive than some other laser engravers on the market, which may not be the best choice for those on a tight budget. Additionally, the machine’s size and weight may make it difficult to transport or store in smaller workspaces.

How OMTech Polar Evolved from earlier versions

OMTech has been a player in the laser machine market for almost 30 years and continues to release new products that compete with other established brands. The OMTech Polar stands out from other OMTech laser cutters in several ways. Firstly, it has an expected operating life of approximately 10,000 hours, which is a significant improvement from the previous version of OMTech’s 50-watt CO2 lasers that lasted for only 2,000 hours. This increased run time is a boost of approximately 500% for the Polar.

How OMTEch Polar is differant from previous OMTech lasers

The stainless steel canopy gives the Polar an appearance that allows it to compete with Glowforge and Gweike lasers, which have been charging premium prices for both appearance and ability for a couple of years. Additionally, the primary focus of the Polar is on laser engraving enthusiasts, whereas previous OMTech 50W CO2 lasers were intended for laser cutters. The Polar’s engraving speed is as high as the Gweike and better than the Glowforge, making it clear that this machine is intended only for engraving enthusiasts and crafters. The Polar can cut only 0.4 inches of wood, confirming that it is not ideal for laser cutting.

Moreover, the OMTech Polar has safety improvements that were missing in earlier OMTech laser cutters. For example, it has a safety key and synchronization of lid opening and laser cut, which help make it a premium laser engraver. The Polar also comes with a water chiller, a feature that was not available in earlier OMTech lasers, which directly affects the laser engraving and cutting experience. The duct fan and airtight canopy significantly reduce noise levels. Lastly, earlier OMTech lasers had one rotary attachment, whereas the POLAR comes with a dual rotary attachment that helps provide a better round-shaped engraving experience.

Overall, the OMTech Polar 50W CO2 laser engraver has a heavy focus on engraving speed, service life, better safety, and control features to target the Glowforge and Gweike market. This machine provides an excellent option for those looking for a high-quality, versatile, and durable laser engraver.

xTool P2 55W CO2 Laser Engraver

The xTool P2 55W CO2 Laser Engraver is a versatile and powerful tool that has attracted the attention of many hobbyists and professionals alike. In this review, we will focus on its performance in glass and granite engraving, and discuss why this laser engraver is a suitable option for these materials.

xTool P2 55W CO2 Laser Cutter Review

Check price from xTool Official Store

Experience with granite & glass engraving

The xTool P2 55W CO2 Laser Engraver, with its 55W CO2 laser tube, offers excellent precision and quality in engraving both granite and glass surfaces. The machine is capable of producing highly detailed, intricate designs and fine text on these materials. With its large 16″ x 20″ work area, you have ample space for your projects.

The xTool P2 55W CO2 Laser Engraver is a suitable choice for glass and granite engraving due to its high precision and power. The 55W CO2 laser tube ensures that even the most intricate and detailed designs can be engraved on these hard materials with ease. Additionally, the large work area and user-friendly software make it convenient for users to work on a variety of projects.

xTool P2 55W CO2 Laser Cutter Review

Key Takeaways

  • High precision engraving: The xTool P2 55W CO2 Laser Engraver delivers highly accurate engravings on granite and glass, making it an ideal choice for those working with these materials.
  • Large work area: The 16″ x 20″ work area provides ample space for projects, ensuring that you have enough room for even larger pieces.
  • Easy to use: With its user-friendly software and touchscreen control, the xTool P2 55W CO2 Laser Engraver is easy to set up and operate, even for beginners.
  • Versatile: Apart from granite and glass, the xTool P2 can also engrave other materials such as wood, acrylic, leather, and more, making it a versatile option for various applications. (Click here for in-depth review of the xTool P2)

Negative sides

  • Cost: The xTool P2 55W CO2 Laser Engraver is relatively more expensive compared to some of its competitors in the market. However, its high-quality performance and versatility justify the investment.
  • Weight and size: The machine is quite heavy and large, which may make it difficult for some users to transport or find a suitable space in their workspace.

Bottom line

In conclusion, the xTool P2 55W CO2 Laser Engraver is a reliable and powerful engraving tool for those looking to work with glass and granite materials. While it may be more expensive and larger than some alternatives, its performance, versatility, and ease of use make it a worthwhile investment for hobbyists and professionals alike.

xTool F1

The xTool F1 handheld laser engraver of 2023 is a direct competitor of LaserPecker 4. Undoutedly, it is a feasible laser engraver for glass & granite.

When it comes to laser engraving, size, portability, and material compatibility are a concern. The xTool F1 solves all of these problems with its two separate laser heads, one of which generates a 1064 nm wavelength laser beam that is ideal for engraving softer materials and marking stainless steel, gold, bronze, platinum, and other sensitive materials.

Here’s a latest engraving result done by the xTool F1:

glass engraving by xTool F1

Equipped with a 10W diode laser that fires at a 455 nm wavelength and a 2W laser head that generates a laser beam at 1064 nm wavelength, the xTool F1 offers outstanding material compatibility. The autofocus and preview mode are top-notch, ensuring better precision and active monitoring. Furthermore, the engraving accuracy, height adjustment, and the machine’s sleek canopy give it a premium look that will surely shake up the market.

Overall, the F1 is an excellent choice, especially considering its price point and operating flexibility. It supports lightburn, which eliminates the need for third-party servers, unlike Glowforge users.

Read xTool F1’s in-depth review here.

xTool F1 Key Takeaways

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Key Positive sides

These are the key highlights of xTool F1 that put the engraver ahead of other similar laser engravers.

  • Comes with rotary attachments to engrave glasses and correct engraving pattern
  • Can handle laser marking at even 1064 nm wavelength which is essential for sensitive materials
  • You can engrave a family picture at 1000 DPI within 5 seconds at an engraving speed of 4000 mm/s
  • The primary laser bed is 100 * 100 mm; however, it can be vertically expandible
  • Generates noise at even below 50 db
  • cuts up to 8mm
  • Can do laser marking with its 2W additional diode laser
  • Available under $2000
  • Smoke purifier included


  • This laser engraver is not fully canopied
  • diode lasers are not as powerful as the CO2 lasers

How xTool F1 differs from other xTool lasers

xTool currently dominates the laser engraver market by offering solutions that cater to customers’ needs. The xTool F1 sets itself apart from other xTool laser engravers in several ways:

How xTool F1 is different from other xTool laser engravers

Firstly, the F1 is xTool’s first handheld laser with two separate laser heads. While xTool has previously offered many popular diode lasers, the F1 is the only laser engraver from the company with a laser capable of producing a 1064 nm beam, setting it apart from its predecessors.

Additionally, the F1 is the fastest engraving speed machine in the xTool lineup, emphasizing speed and accuracy rather than DIY and extension ability found in earlier models like the D1 and D1 Pro.

Another significant difference is the F1’s ability to engrave any material from any position. Unlike other machines, users do not need to move the material to engrave it. Instead, they can bring the engraver to the material, providing two-way flexibility that makes the F1 a standout diode laser module.

Laser Cutter Noise in Decibel
xTool F1 40 to 45 DB
OMTech Polar 60 to 75 DB
Gweike Cloud Pro 60 to 75 DB
Glowforge Pro 80 to 95 DB
Older OMTech Lasers 65 to 80 DB
Ten High 75 to 85 DB

Overall, xTool has noticed that it is losing customers to competitors like LaserPecker and has worked to create a product that can compete with them. The company’s product portfolio is designed to offer both fully canopied lasers that can compete with Glowforge and handheld lasers like the F1.

More on xTool F1 vs Laserpecker 4 is available here.

LaserPecker 4

I’m happy to provide a product review of the Laserpecker 4 laser engraver, which is an excellent tool for engraving on a variety of materials, including glass and granite.

First and foremost, the Laserpecker 4 is a very versatile tool, as it can be used to engrave on a variety of surfaces, including wood, leather, plastic, and even food. The device is portable and lightweight, making it easy to carry around and use in different settings.

One of the reasons why the Laserpecker 4 is particularly well-suited for glass and granite engraving is because of its high precision laser. The laser has a resolution of up to 1000 dpi, which means that it can produce very fine and detailed engravings on hard and smooth surfaces like glass and granite. Additionally, the device has a powerful cooling system that ensures that the laser doesn’t overheat or damage the surface being engraved.

Laserpecker 4

The Laserpecker 4 also comes with a user-friendly software program that allows you to create and edit designs for engraving. The software is compatible with a variety of file types, including BMP, JPG, PNG, and SVG. This makes it easy to import designs from other programs or websites and modify them to fit your needs.

Finally, the Laserpecker 4 is a very affordable option for anyone who wants to get started with laser engraving. It is much more affordable than other laser engravers on the market, yet still provides high-quality results. Overall, I would highly recommend the Laserpecker 4 to anyone who is interested in glass or granite engraving, or who wants to experiment with laser engraving on a variety of other surfaces.

Positive Sides

The Laserpecker 4 has several key features that make it the most appealing choice for laser engraving in 2023. For the Best price, Visit Laserpecker’s official website.

Here are two engravings done on LaserPecker 4:

Laser engraving on Laserpecker 4

Firstly, it boasts a dual laser system that allows for more vibrant engraving and ensures compatibility with a wide range of materials. For example, the Laserpecker 4 can easily print high-definition photos on glass.

In addition to the 450 nm diode laser, the Laserpecker 4 also includes a 1064nm pulsed fiber laser, enabling color laser engravings even on thin materials such as laptop lids or the backs of smartphones.

The Laserpecker 4 also has a faster engraving speed, reaching 2000 mm/second with 0.003mm precision. This results in finer details, regardless of the material being engraved.

The rotary extension is also a useful feature, allowing for a 360-degree rotation that simplifies engraving. This means that you can position the material anywhere, and the rotary attachment will adjust accordingly.

Furthermore, the pulsed fiber laser, in conjunction with the diode laser, allows for engraving on cloth, fruits, plastic, and ceramic, without any added complexities.

Finally, the Laserpecker 4 supports both Lightburn and G-code, making it compatible with any design software. Overall, the Laserpecker 4 is an exceptional laser engraver that offers precision, versatility, and speed, making it an excellent choice for both personal and professional use.


  • Laserpecker 4 is more expensive than the previous laser engravers.
  • It’s not fully canopied like the OMTech Polar

Differences with Older LaserPecker lasers

The Laserpecker 3 and Laserpecker 4 are both exceptional laser engravers that offer great flexibility in engraving. The primary difference between them is that the Laserpecker 4 includes an extra 2W fiber laser with a controlled pulse rate, while the Laserpecker 3 has only one 5W diode laser. The additional fiber laser in the Laserpecker 4 allows for laser marking on thinner materials, and both engravers have excellent engraving speeds.

However, the Laserpecker 4 boasts three times the precision of the Laserpecker 3, resulting in finer details. Additionally, the Laserpecker 4 is capable of producing HD 4K quality photo prints, while the Laserpecker 3 cannot. Overall, both laser engravers are an excellent value for money, as long as the user knows how to use them effectively.

The Laserpecker 3’s 5W diode laser is suitable for engraving everything except for color engravings. The Laserpecker 4, on the other hand, includes an additional fiber laser and a 10W diode laser, which enables engraving on more sophisticated materials, as well as color laser engravings.

Furthermore, the Laserpecker 4 features a controlled pulse rate of 1065nm wavelength. This controlled pulse rate ensures that the laser power is consistent and that the laser beam is applied evenly during engraving. As a result, the engraving process is efficient and accurate, with minimal heat buildup and a lower risk of damage to the material being engraved.

Common Mistakes

Here are the common mistakes people experience while laser engraving glass & granite with laser engravers.

  • Not Cleaning the Surface: Not cleaning the surface of glass or granite before laser engraving can lead to poor results. Dust, dirt, and other debris can affect the laser energy and cause it to be unevenly distributed, resulting in an uneven engraving. To avoid this, make sure the surface is clean and free of contaminants before laser engraving.
  • Overheating the Material: Laser engraving glass and granite can cause the material to overheat and become damaged. This can lead to discoloration, cracking, or other issues. To avoid this, its important to ensure that the laser power is set to an appropriate level for the material youre engraving.
  • Not Using the Correct Settings: Not using the correct laser settings can also lead to poor results when laser engraving glass and granite. The wrong speed, power, and frequency settings can all cause the engraving to be uneven and distorted. To avoid this, its important to make sure the laser settings are adjusted properly for the material youre engraving.
  • Not Using the Proper Laser: Not using the right laser for the material youre engraving can cause problems as well. Different materials require different laser wavelengths to be effectively engraved. To avoid this, make sure to select the right laser for the material youre engraving.
  • Not Accounting For the Material Thickness: If the material is too thick or too thin, the laser may not be able to effectively engrave it. Different materials have different thicknesses, so its important to make sure youre accounting for the materials thickness when laser engraving.

By following these tips, you can help ensure that your laser engraving projects on glass and granite will turn out as expected.

Alternate ways of Glass Engraving

Other than laser engravers, one of the most common ways to engrave glass is sandblasting. Sandblasting is a process that uses a pressurized stream of abrasive material to etch patterns and designs into glass. It is typically used for shallow engraving and for creating a frosted look.

Another method for engraving glass is diamond engraving. This is a mechanical process that uses a diamondtipped tool to etch intricate patterns in the glass. This method is often used by professionals and is capable of producing highly detailed designs.

One of the oldest methods for engraving glass is acid etching. This process uses a chemical etchant, such as hydrofluoric acid, to etch patterns into the surface of the glass. This method is often used for creating deep, intricate designs.

One of the main limitations of these alternative methods is that they are much slower than laser engraving. Sandblasting and acid etching are also more hazardous than laser engraving, and require special safety precautions. Additionally, acid etching can damage the glass if it is not done correctly.

The main differences between the sandblasting, diamond engraving & acid etching are:

Sandblasting is a technique that uses pressurized air and sand to remove material from a surface. The sandblaster forces sand at a high speed onto the material, which then erodes away the top layer of the material. An example of sandblasting is the use of sandblasting to remove rust from metal surfaces. Similarly, Diamond engraving is a process that uses a diamondtipped tool to carve into a material. This process is often used to create detailed images, logos, and text. An example of diamond engraving is the use of diamond engraving to create a logo or artwork on a piece of jewelry.

On the other side, Acid etching is a process that uses an acid solution to corrode a surface. The acid etches away the top layer of the material, creating a distinctive pattern or design. An example of acid etching is the use of acid etching to create intricate patterns on metal surfaces.

What are the differences between CO2 and diode laser?

CO2 and diode lasers are both types of lasers used in various industries for cutting, marking, and engraving different materials. While both types of lasers use light to generate heat and create a high-energy beam, there are several key differences between them.

CO2 lasers use a gas mixture of carbon dioxide, nitrogen, and helium to create a laser beam that operates in the far infrared region of the electromagnetic spectrum. CO2 lasers are typically more powerful than diode lasers and are better suited for cutting and engraving thick and hard materials like metals and plastics. They have a longer wavelength, which allows them to penetrate deeper into materials and make precise cuts with minimal heat distortion. However, CO2 lasers require a more complex and expensive cooling system due to the high power and longer wavelength.

On the other hand, diode lasers use a semiconductor crystal to generate a laser beam that operates in the near-infrared region of the electromagnetic spectrum. Diode lasers are typically less powerful than CO2 lasers and are better suited for engraving and marking thin and delicate materials like glass, wood, and paper. They have a shorter wavelength, which means they are less likely to cause heat damage to the material being engraved or marked. Diode lasers are also more compact and require less cooling than CO2 lasers, making them more cost-effective and easier to operate.

When it comes to glass engraving, the differences between CO2 and diode lasers can have a significant impact on the quality of the engraving. CO2 lasers are not well-suited for engraving glass as they tend to create micro-cracks and heat distortion due to the high power and longer wavelength. On the other hand, diode lasers are ideal for glass engraving as they can create precise and intricate designs without causing any damage or distortion to the glass. The shorter wavelength of diode lasers also allows for more precise control over the depth and width of the engraved lines, resulting in a smoother and more refined finish.

In summary, the differences between CO2 and diode lasers relate to their power, wavelength, and cooling requirements. While CO2 lasers are more powerful and better suited for cutting and engraving thick and hard materials, diode lasers are ideal for engraving thin and delicate materials like glass with minimal heat damage or distortion.

Buying Guide

Before buying a laser engraver to engrave glass and granite, there are several important factors to consider:

  • Laser type: As mentioned in my previous answer, CO2 lasers are typically more powerful and better suited for cutting and engraving thick and hard materials like granite, while diode lasers are ideal for engraving thin and delicate materials like glass. Therefore, you need to make sure that the laser engraver you choose has the appropriate laser type for the materials you want to engrave.
  • Power: The power of the laser is also an important factor to consider. For glass engraving, a low power laser (around 10-30 watts) is sufficient, while for granite engraving, a higher power laser (50 watts or more) may be required. Therefore, you need to make sure that the laser engraver you choose has the appropriate power for the materials you want to engrave.
  • Engraving area: The size of the engraving area is another important consideration. You need to make sure that the laser engraver you choose has a large enough engraving area to accommodate the size of the glass or granite pieces you want to engrave.
  • Software and compatibility: The software that comes with the laser engraver should be user-friendly and compatible with your computer. Some laser engravers may require specific software or plugins to operate, so make sure to check compatibility before purchasing.
  • Cooling system: Laser engravers generate a lot of heat, so it’s important to have a reliable cooling system to prevent overheating and prolong the life of the laser. Make sure that the laser engraver you choose has an adequate cooling system that can handle the specific needs of the laser.
  • Price and warranty: Finally, consider the price and warranty of the laser engraver. You want to make sure that you’re getting a good value for your money and that the engraver comes with a reliable warranty and customer support in case any issues arise.

By considering these factors, you can choose a laser engraver that is suitable for your needs and can effectively engrave glass and granite

Steps of Glass Engraving

The process of glass engraving using a laser engraver involves the following steps:

  • Prepare the artwork: The first step is to create or obtain the artwork that you want to engrave onto the glass. This can be done using graphic design software or by converting an image into a vector file format that can be used by the laser engraver software.
  • Set up the laser engraver: Next, set up the laser engraver and configure the settings according to the type of glass you are engraving. This may include adjusting the laser power, speed, and focus.
  • Clean and prepare the glass: Clean the surface of the glass and ensure that it is free of any dust or debris. Apply masking tape or a similar protective material to the areas of the glass that you do not want to engrave.
  • Load the artwork into the laser engraver software: Load the artwork into the laser engraver software and adjust the positioning and sizing as needed. You may also need to adjust the settings for different parts of the artwork, such as changing the laser power or speed for different areas.
  • Engrave the glass: Once everything is set up, start the engraving process. The laser beam will etch the design into the surface of the glass, creating a frosted or engraved effect. Depending on the size and complexity of the design, the engraving process may take anywhere from a few minutes to several hours.
  • Remove the masking tape and clean the glass: Once the engraving is complete, remove the masking tape and clean the glass to remove any remaining debris or residue.
  • Inspect and package the engraved glass: Finally, inspect the engraved glass for any defects or imperfections and package it carefully for transport or display.

Overall, the process of glass engraving using a laser engraver is relatively straightforward and can produce high-quality, precise results.

Why Temporary Laser Marking Paper is used?

Temporary laser marking paper is often used for glass laser engraving as it provides a protective layer that helps to prevent damage to the glass during the engraving process. The paper is typically made of a heat-resistant material that can withstand the heat and intensity of the laser beam without burning or leaving residue on the glass.

When engraving glass with a laser, the heat from the beam causes the glass to expand and contract rapidly, which can create micro-cracks and lead to shattering or breaking of the glass. Temporary laser marking paper acts as a buffer between the glass and the laser beam, absorbing some of the heat and reducing the risk of damage to the glass.

In addition to protecting the glass from damage, temporary laser marking paper also helps to improve the quality and accuracy of the engraving by providing a clear and consistent surface for the laser beam to etch onto. This can help to minimize distortion, produce cleaner lines and edges, and improve the overall clarity and definition of the engraving.

Temporary laser marking paper is typically easy to apply and remove, and comes in a variety of sizes and shapes to accommodate different types of glass and engraving projects. Some types of paper may also be reusable, making them a cost-effective and eco-friendly option for glass engraving.

Overall, temporary laser marking paper is an important tool for achieving high-quality, precise, and safe glass laser engraving, and is a recommended accessory for anyone looking to engrave glass with a laser.

Glass Engraving vs Sub Surface Laser Engraving

Glass laser engraving and subsurface laser engraving are two different techniques used to create engraved designs on glass.

Glass laser engraving involves using a laser to etch a design onto the surface of the glass. The laser beam heats the glass, causing it to fracture and create a frosted appearance where the design is engraved. Glass laser engraving can be used to create detailed designs with high precision and accuracy.

Subsurface Laser Engraving

On the other hand, subsurface laser engraving involves using a laser to create an image or design within the glass, rather than on the surface. This technique involves focusing the laser beam into the interior of the glass, where it creates tiny fractures that form the desired image. The engraved design is visible through the glass but does not affect the surface texture or appearance of the glass.

The main difference between the two techniques is the location of the engraving. Glass laser engraving creates a visible, frosted design on the surface of the glass, while subsurface laser engraving creates a three-dimensional image within the glass. Subsurface laser engraving is often used for creating intricate, high-quality designs on glass items such as awards, trophies, and decorative pieces.

Both techniques have their own unique advantages and applications, and the choice between them depends on the desired outcome and intended use of the engraved glass.

LightBurn Settings for Glass & Granite Engraving

The ideal LightBurn settings for glass and granite engraving depend on several factors, including the type and thickness of the material being engraved, the type of laser used, and the desired level of detail and depth for the engraving. Here are some general guidelines for LightBurn settings for glass and granite engraving:

Glass Engraving:

  • Laser type: Diode laser
  • Power: 10-30 watts
  • Speed: 200-400 mm/s
  • Frequency: 40-80 kHz
  • DPI: 300-500
  • Passes: 1-2

When engraving glass, it’s important to use a low-power laser and high speed to avoid cracking or shattering the glass. Higher DPI settings can produce more detailed engravings but will take longer to complete. If you need to engrave deeper into the glass, you may need to make multiple passes with the laser, adjusting the power and speed as needed for each pass.

Granite Engraving:

  • Laser type: CO2 laser
  • Power: 40-60 watts
  • Speed: 50-100 mm/s
  • Frequency: 5-15 kHz
  • DPI: 300-500
  • Passes: 1-2

When engraving granite, you’ll need a higher-power laser and slower speed to effectively etch the surface. Lower frequency settings can help produce deeper engravings, but may also cause more heat buildup and potential damage to the material. Multiple passes may be needed to achieve the desired depth and level of detail.

granite engraving


It’s important to note that these settings are just a starting point and may need to be adjusted based on the specific materials and design being engraved. For example, intricate designs may require slower speeds and higher DPI settings, while simpler designs may require higher speeds and lower DPI settings.

When making adjustments to the LightBurn settings, it’s important to test the engraving on a small area of the material before proceeding with the full engraving. This allows you to fine-tune the settings and ensure that the engraving will meet your desired specifications without causing any damage to the material.

Overall, the ideal LightBurn settings for glass and granite engraving will depend on the specific materials and design being engraved, and may require some experimentation and adjustment to achieve the desired result.

Tips to improve the design

Here are a few tips to improve the design for the best result in glass engraving:

  • Keep it simple: Engraving intricate designs onto glass can be challenging, so it’s important to keep the design simple and easy to read. Choose a design that is bold and clear, with clean lines and simple shapes.
  • Pay attention to detail: Even though you want to keep the design simple, it’s still important to pay attention to the details. Use high-quality graphics software to create the design and ensure that it is well-defined and free of errors.
  • Choose the right font: When engraving text onto glass, choose a font that is easy to read and legible. Avoid using overly ornate or decorative fonts that can be difficult to read, especially at smaller sizes.
  • Consider the size of the engraving: The size of the engraving can have a significant impact on the final result. Small engravings may be more difficult to read and may require a higher DPI setting to achieve the desired level of detail.
  • Use masking tape: Applying masking tape to the glass before engraving can help to protect the glass and prevent damage or cracking. This can also help to produce a cleaner and more defined engraving by reducing the likelihood of distortion or interference from dust or debris.
  • Test on a sample piece: Before engraving the final piece of glass, it’s a good idea to test the design on a sample piece. This will allow you to adjust the settings and make any necessary tweaks to the design to achieve the best possible result.

By following these tips, you can improve the design and achieve the best possible result when engraving glass.

Post Processing Challenges

Glass and granite are both very hard and durable materials, making them excellent candidates for laser engraving. However, post-processing these materials after engraving can present some challenges.

For glass, the main challenge is preventing cracking or chipping of the material during the engraving process. Glass is very brittle and can easily break if it is not engraved properly. Additionally, once the engraving is complete, the glass may need to be cleaned to remove any debris or residue left behind by the laser. This cleaning process can be time-consuming and requires special care to avoid damaging the delicate engraving.

For granite, the main challenge is achieving a consistent and uniform depth of engraving. Granite is a natural stone and can have variations in hardness and texture, which can affect how deeply the laser engraving penetrates the surface. Additionally, once the engraving is complete, the granite may need to be polished to bring out the full beauty of the design. This polishing process can also be time-consuming and requires special equipment and expertise to achieve a high-quality finish.

Overall, both glass and granite laser engraving require careful attention to detail and a high level of skill to achieve the desired results. With proper care and technique, however, these materials can be transformed into stunning works of art that will last for generations.


In conclusion, the best laser engravers for glass and granite are those that have the appropriate laser type, power, and settings to effectively etch and engrave these hard materials. When choosing a laser engraver, it’s important to consider factors such as the engraving area, compatibility with different materials, software and compatibility, cooling system, and price and warranty. By considering these factors and choosing a laser engraver that is specifically designed for glass and granite engraving, you can ensure that you get high-quality, precise, and durable engravings that will stand the test of time.

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