what is the kerf on a 2.0 lens laser


What Is the Kerf on a 2.0 Lens Laser and Its Importance in Laser Engraving?

When it comes to laser engraving, the kerf is an essential factor to consider. The kerf refers to the width of the laser beam that is removed during the cutting process. The size of the kerf can vary depending on the laser lens being used. In this article, we will discuss the kerf on a 2.0 lens laser and its significance in laser engraving.

What Is a 2.0 Lens Laser?

A 2.0 lens laser is a type of laser engraver that uses a 2.0-inch focal length lens. The lens is responsible for focusing the laser beam onto the material being engraved. This type of laser lens is popular because it can produce very fine and precise cuts, making it ideal for engraving intricate designs.

What is Kerf in Laser Engraving?

Kerf may be a new term for those who are new to the field of laser engraving. Kerf refers to the width of the material removed by the laser when cutting or engraving. Laser kerf is essential as it will influence the accuracy of the workpiece, cutting depth, and material types. It's a critical parameter in laser engraving as it determines how precisely the laser beam will remove the material being engraved.

Kerf measurement is usually expressed in “thou”, where “thou” is equivalent to one-thousandth of an inch. So, a kerf of 100 thou equates to a cut of 0.1 inches wide.

Kerf and Laser Lens

Kerf width in laser engraving is controlled by the laser beam's focus, which is achieved through the laser lens. Kerf is dependent on lens diameter and focal length. With a 2.0 lens laser, the beam will be focused into a smaller point compared to a 4.0 lens laser. Therefore the kerf will be much smaller.

A 2.0 lens laser produces a kerf of about 0.009 to 0.011 inches, depending on the laser's wattage and other parameters. This dimension is relatively small, and it allows for intricate and detailed designs to be engraved with little to no excess material.

Advantages of a 2.0 Lens Laser

The size of the laser beam is critical in achieving precise cuts in laser engraving. A 2.0 lens laser has a small beam size, which allows the user to make precise and intricate cuts. 2.0 lens lasers also have faster engraving speeds than larger lens sizes, increasing productivity when it comes to large jobs with a lot of precise cuts.

Another advantage of using a 2.0 lens is that it produces a thinner kerf, making it ideal for engraving thin materials like paper and fabric. Thinner kerfs result in less material waste, and no extra finishing is necessary in some cases.

Limitations of a 2.0 Lens Laser

One limitation of using a 2.0 lens laser is that it cannot cut through thick materials as quickly as a laser with a larger lens size. Materials like wood or acrylic may need to be cut multiple times to get through the entire depth, which makes the process take longer.

Moreover, 2.0 lens lasers have a smaller engraving bed and cutting size compared to larger lens sizes. This may be an issue when engraving or cutting larger designs or materials.


In conclusion, the kerf is an essential factor to consider when laser engraving. For those who require intricate and precise cuts, a 2.0 lens laser is an excellent option to consider. It produces a fine kerf, allowing for clean and precise cuts without much waste, and increasing productivity with faster engraving speeds. However, it's crucial to note that while a 2.0 lens laser has many benefits, it also has limitations that the user should consider before purchasing the machine.


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