What is the edge quality like on laser cut parts?

Edge quality on laser cut parts is generally excellent, with smooth and consistent finishes that often surpass other cutting methods. The quality of laser cut edges can vary depending on several factors, including material thickness, laser power, and cutting speed. For thinner materials, typically those less than 0.125 inches (3.175 mm) thick, laser cutting produces exceptionally smooth and uniform edges. The high-energy beam of the laser vaporizes the material quickly and cleanly, resulting in a crisp, almost polished appearance. These edges often require little to no post-processing, making them ideal for parts that will be visible in the final product or those that need to fit together precisely.

As material thickness increases, there may be a slight decrease in edge quality, though it remains superior to many other cutting methods. Thicker materials require more power and slower cutting speeds, which can sometimes lead to a slightly rougher edge texture. However, this roughness is usually minimal and still provides a clean, professional finish.

The type of material being cut also influences edge quality. Metals like stainless steel and aluminum tend to produce very clean edges due to their consistent composition. Materials like mild steel may occasionally show some slight oxidation or discoloration at the cut edge, but this is typically minimal and doesn't affect the overall quality or functionality of the part.

It's worth noting that laser cutting often produces better edge quality than plasma cutting or waterjet cutting, especially for intricate designs or parts with small features. The precision of the laser beam allows for sharp corners and fine details that might be challenging to achieve with other methods.

In some cases, particularly with thicker materials or certain alloys, you might notice a slight taper on the cut edge. This taper is usually very small, often less than 1 degree, and is a result of the way the laser beam interacts with the material as it cuts through. For most applications, this taper is negligible and doesn't impact the part's functionality.

The edge quality of laser cut parts can also be influenced by the specific settings and equipment used. Modern fiber lasers, like those used at Fabworks, are capable of producing exceptionally high-quality edges across a wide range of materials and thicknesses. These advanced systems can be finely tuned to optimize edge quality for each specific job.

For projects where edge quality is critical, it's always a good idea to communicate your requirements to your laser cutting service provider. They can often adjust their cutting parameters to prioritize edge quality if needed, ensuring that your parts meet your exact specifications.