What Type of Acrylic is Used for Laser Cutting?| Best Acrylic Sheets for Laser Cutting

What Type of Acrylic is Used for Laser Cutting?

Acrylic is one of the most popular materials used in laser cutting and engraving. It’s widely chosen by makers, manufacturers, and artists for its clarity, smooth cutting edges, and versatility. However, not all acrylic sheets are created equal when it comes to laser processing. The two main types—cast acrylic and extruded acrylic—react differently under a laser. Understanding their differences will help you choose the right one for your specific project.

1. The Two Main Types of Acrylic: Cast vs Extruded

Cast Acrylic (Cell Cast Acrylic)

Cast acrylic, also known as cell-cast acrylic, is produced by pouring liquid methyl methacrylate (MMA) into molds. The result is a high-quality sheet with excellent optical clarity and uniform hardness.
Key features of cast acrylic:

• Smooth, flame-polished edges after laser cutting

• Excellent engraving contrast (white frosted finish)

• More rigid and scratch-resistant

• Available in a wide range of colors and thicknesses

Because of these characteristics, cast acrylic is the preferred choice for laser cutting and engraving. It produces clean cuts and beautifully frosted engraved marks, making it ideal for signage, awards, display cases, and custom nameplates.

Extruded Acrylic (Continuous Cast Acrylic)

Extruded acrylic is made by continuously pushing acrylic resin through a die to form sheets. This manufacturing process makes it more economical and consistent in thickness.
Key features of extruded acrylic:

• Lower cost than cast acrylic

• Smoother surface and more uniform thickness

• Softer and easier to machine

• Less suitable for engraving — engravings appear transparent rather than frosted

When laser cutting, extruded acrylic tends to melt slightly, producing edges that may be less clear. It’s best used for applications where engraving quality is not the main concern, such as protective covers, light diffusers, or general cutting projects.

2. Why Cast Acrylic is Better for Laser Cutting

If your goal is precision and visual quality, cast acrylic outperforms extruded acrylic in nearly every way for laser use.

In short, choose cast acrylic if you want perfect polished edges and high-contrast engraving. Extruded acrylic can be used for simple cutting tasks where cost and uniformity are more important than engraving appearance.

3. Ideal Acrylic Thickness for Laser Cutting

The most commonly used acrylic thicknesses for laser cutting are:

• 2mm to 6mm: perfect for small signage, model making, and craft projects

• 8mm to 12mm: suitable for larger signage, display panels, and furniture components

• 15mm and above: used for decorative installations or structural applications

Always ensure your laser cutter has enough power (at least 60–100W) to handle thicker acrylic sheets for clean, single-pass cuts.

4. Tips for Laser Cutting Acrylic Sheets

To achieve the best results:

1. Use protective film during cutting to avoid scratches and burn marks.

2. Adjust laser power and speed depending on thickness—too much power can cause melting.

3. Use air assist to blow away fumes and debris from the cutting area.

4. Engrave on the back side for a more professional, mirror-finish appearance when viewed from the front.

5. Always use cast acrylic for high-quality engraving and smooth, polished edges.

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5. Applications of Laser-Cut Acrylic

Laser-cut acrylic is widely used in various industries, including:

• Signage and Display: illuminated logos, nameplates, and letters

• Home Decoration: wall art, photo frames, and furniture accents

• Retail & Exhibition: product display stands and brochure holders

• Awards & Trophies: precision-engraved plaques with frosted logos

• DIY & Crafts: custom gifts, keychains, and art projects

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6. Conclusion: Choose Cast Acrylic for Best Laser Results

When it comes to laser cutting acrylic, your choice of material determines the final quality of your product. Cast acrylic delivers professional results—clear edges, frosted engravings, and durable finishes—making it the go-to option for most laser cutting and engraving projects.

Meanwhile, extruded acrylic remains a budget-friendly option for simple cutting applications that don’t require engraving detail or perfect edge quality.

So, whether you’re crafting retail displays, architectural models, or custom signage, selecting the right type of acrylic ensures clean cuts, flawless edges, and lasting visual appeal.