Industrial CNC & Laser Insights

Download and use our definitive CO2 laser speed and power chart for acrylic, wood, leather, glass, paper, and fabric. Optimize cutting, engraving, and marking parameters across all common non-metal materials.

Ⅰ. Introduction: Why a Parameter Chart Is Your Shop‘s Most Valuable Document

Every CO2 laser operator eventually confronts the same problem: a new material arrives, the deadline is tight, and the optimal settings are unknown. Trial-and-error testing burns through material, time, and patience. A validated CO2 laser speed and power chart eliminates this bottleneck by providing starting parameters that experienced operators have refined across thousands of production hours.

The data in this guide consolidates parameter baselines for the non-metal materials that dominate CO2 laser processing: acrylic, plywood, solid wood, MDF, leather, fabric, paper, rubber, glass, and stone. Each table presents speed, power, frequency, and resolution settings calibrated for specific material thicknesses and processes—raster engraving, vector cutting, and surface marking. According to industrial baseline metrics established by leading CNC and laser manufacturers, the difference between a correct starting parameter and a guess is often the difference between a saleable part and scrap.

This parameter reference is organized by material category, with separate tables for each material and process type. All values assume a properly focused 50.8 mm (2.0-inch) focal lens and a clean honeycomb or pin bed. Settings should be treated as validated starting points—fine-tune by ±5–10% to account for your specific tube age, beam quality, altitude, and material batch variation. For shops running multiple non-metal materials daily, pairing this parameter reference with the machine capabilities of a reliable laser platform from YIHAICNC‘s comprehensive CNC router and laser fabrication ecosystem ensures consistent output across diverse production requirements.

Ⅱ. How to Use This Parameter Library

Before presenting the parameter tables, several universal factors must be understood. These variables affect every setting in this guide and explain why two identical machines may require slightly different parameters to achieve the same result.

1. DC Glass Tube vs. RF Metal Tube Power Calibration

DC-excited glass CO2 tubes and RF-excited metal tubes deliver power differently even when both are rated at the same wattage. A 100W DC glass tube operating at 50% PWM duty cycle typically delivers 45–55W of actual optical power due to nonlinearity in the tube‘s response curve. A 100W RF metal tube at 50% duty cycle delivers closer to 48–52W with significantly better linearity. According to laser physics data from Thorlabs’ optical engineering resources, RF tubes maintain superior pulse-to-pulse stability and faster rise times, enabling cleaner engraving at higher speeds.

All parameter tables in this guide specify power as a percentage of maximum rated tube power. Operators with RF metal tubes can use these values directly. Operators with DC glass tubes should note that low-power settings (below 15–20%) may not fire the tube reliably—if your tube requires a minimum threshold to ignite, set the minimum power floor accordingly and adjust speed to compensate.

2. Focal Lens Selection and Its Impact

The focal lens determines spot size and depth of field. The parameter tables assume a standard 50.8 mm (2.0-inch) focal lens, which provides a balanced compromise between spot size (approximately 0.1–0.2 mm) and depth of field (approximately 3–5 mm). For thicker materials (above 10 mm), a 63.5 mm (2.5-inch) or 101.6 mm (4.0-inch) lens provides greater depth of field at the cost of a slightly larger spot size.

3. Air Assist and Exhaust Requirements

Air assist is not optional for most CO2 laser cutting operations. It serves three functions: it blows vaporized material out of the kerf, it cools the cut zone to reduce heat-affected zone width, and it suppresses flame formation on combustible materials. The parameter tables assume air assist at 1.5–2.5 bar for cutting operations and 0.5–1.0 bar for engraving. Operators without air assist should reduce cutting speeds by 15–25% and expect wider kerfs and increased char. The exhaust system must generate sufficient face velocity to capture fume before it deposits on optics—consult YIHAICNC‘s after-sales service and technical support for machine-specific extraction specifications.

4. How to Fine-Tune Starting Parameters

Every parameter in this guide should be treated as a starting point. The following table provides a systematic tuning methodology for converging on optimal settings with minimal material waste.

5. Understanding Table Notation

Throughout the parameter tables, the following conventions apply. Power is expressed as a percentage of maximum rated tube power. Speed is expressed in mm/s for both vector cutting and raster engraving. Frequency is the PWM pulse rate in Hz. Line Interval is the spacing between adjacent raster scan lines in mm. DPI is dots per inch for raster engraving resolution. Pass Count indicates the number of complete toolpath repetitions required. All values assume a 50.8 mm (2.0-inch) focal lens, air assist at 1.5–2.5 bar for cutting and 0.5–1.0 bar for engraving, and a properly cooled tube operating at 20°C ±1°C.

A downloadable material test grid file—a single layout that tests power and speed across a matrix of values—is the most efficient way to validate these parameters on your specific machine. For detailed guidance on creating and using test grids, YIHAICNC‘s technical blog and knowledge base provides downloadable test files and calibration tutorials.

Ⅲ. Acrylic (PMMA): Cutting, Engraving, and Marking Parameters

Acrylic is the most processed non-metal material on CO2 laser systems, valued for its flame-polished edge when cut and its clean white frosted mark when engraved. Cast acrylic produces superior results compared to extruded acrylic, which tends to melt and form a raised, sticky edge rather than vaporizing cleanly. The following parameters cover the full range of acrylic processing operations.

1. Acrylic Vector Cutting Parameters

Cast acrylic consistently produces a superior flame-polished edge because its higher molecular weight and different polymerization method result in cleaner vaporization with less melt flow. Extruded acrylic has a lower melting point and tends to re-flow at the cut edge before solidifying, producing a slightly raised bead. For applications requiring pristine optical clarity—display cases, awards, light pipes—cast acrylic is the mandatory material choice. According to material safety data sheets from major acrylic manufacturers, the autoignition temperature of PMMA is approximately 445°C, and the material burns vigorously once ignited—never leave an acrylic cutting job unattended.

2. Acrylic Raster Engraving Parameters

Cast acrylic engraves with a bright white, uniform frosted appearance that provides excellent contrast against the clear substrate. Extruded acrylic engraves with a less opaque, slightly translucent frost. For maximum engraving contrast on cast acrylic, operate at the higher end of the power range and use a line interval of 0.06–0.08 mm for smooth fill. According to ISO surface roughness testing, the optimal scan interval produces a surface roughness (Ra) of 2–5 µm, which appears uniformly frosted to the naked eye without visible scan lines.

3. Acrylic Special Processes

Photo engraving on acrylic requires careful dithering algorithm selection. Jarvis dithering produces the smoothest tonal transitions on cast acrylic at 508 DPI, while Stucki dithering works better for higher-contrast images with strong highlights. Always engrave photos in reverse (mirrored) on the back side of clear acrylic and view from the front for a protected, glossy finish.

Ⅳ. Wood Products: Plywood, MDF, and Solid Wood Parameters

Wood materials are the second most common substrate class on CO2 laser systems. Unlike acrylic, which vaporizes into a clean gas, wood materials contain cellulose, lignin, natural resins, and moisture that produce char, smoke, and variable edge coloration. The parameter tables below are organized by wood type and process, with notes on the specific challenges each material presents.

1. Birch Plywood Vector Cutting Parameters

Birch plywood is the preferred engineered wood for laser cutting because of its uniform veneer layers and relatively low resin content. However, the glue bond lines between veneers present the primary failure mode. When a urea-formaldehyde glue pocket exceeds 0.3 mm in thickness, the laser encounters a material with significantly different thermal properties than the surrounding wood. The result is localized overheating, glue vaporization, and edge pitting. Pre-inspect sheets under halogen backlight, mark heavy glue bands, and nest parts to avoid those zones. For shops cutting plywood at production volumes, YIHAICNC‘s CNC router and laser machine range includes flatbed laser platforms with honeycomb beds and backlight inspection capability.

2. MDF Vector Cutting Parameters

MDF cuts with a distinctive dark brown to black edge due to the urea-formaldehyde resin binder caramelizing under heat. This edge sands off easily, making MDF the preferred material for painted or veneered parts where edge appearance is hidden. The high resin content generates a heavy, sticky fume load that demands robust extraction. According to OSHA wood dust standards, the formaldehyde emissions from laser-processed MDF require HEPA and activated carbon filtration to maintain workplace air quality within permissible exposure limits. Never operate a laser processing MDF without verified exhaust face velocity.

3. Solid Wood Vector Cutting Parameters

Solid wood cutting parameters vary significantly by species due to differences in density, resin content, and grain structure. Dense, resinous species like walnut and oak require higher power and produce darker edges. Light, low-resin species like basswood and alder cut with minimal edge coloration. Moisture content significantly affects cutting performance—wood at the fiber saturation point (approximately 30%) consumes over 40% more laser energy than wood conditioned to 6–8% moisture content, according to ISO 13061 wood testing methodology.

4. Wood Raster Engraving Parameters

Wood engraving darkness is a function of energy density per unit area—higher power and lower speed produce darker marks, but excessive energy chars the surface into brittle black carbon that flakes off. The optimal setting produces a smooth, chocolate-brown mark that can be sealed with clear coat for permanence. For photo engraving on wood, use 600 DPI with 0.05 mm line interval and a power setting of 14–18% on 60–100W tubes. Jarvis dithering produces the most natural tonal transitions on wood substrates.

5. Specialized Wood Processing Techniques

Ⅴ. Leather, Fabric, and Textile Parameters

Leather and textiles respond to CO2 laser processing with simultaneous cutting and edge sealing, preventing the fraying that mechanical cutting tools produce. The parameters below cover the most common natural and synthetic textiles processed on CO2 systems.

1. Leather Cutting and Engraving Parameters

Vegetable-tanned leather produces the best laser results, with a clean dark brown cut edge and rich engraving contrast. Chrome-tanned leather engraves with less contrast and may produce a slightly greasy residue. Synthetic leathers containing PVC must never be laser-processed—thermal decomposition releases hydrogen chloride gas, which is acutely toxic and corrosive to machine components. Always verify leather composition before processing. Wikipedia‘s entry on leather tanning methods explains the chemical differences between vegetable, chrome, and synthetic tanning processes that affect laser material interaction.

2. Fabric and Textile Cutting Parameters

3. Fabric Engraving Parameters

Ⅵ. Paper, Cardboard, and Rubber Parameters

Paper and cardboard are among the fastest materials to laser process due to their low density and minimal energy requirement for vaporization. Rubber presents unique challenges due to its high melting point and tendency to produce sticky residue.

1. Paper and Cardboard Cutting Parameters

Paper materials ignite at the lowest temperature of any substrate in this guide—Ray Bradbury‘s famous 451°F (233°C) is the autoignition temperature of paper. Air assist is mandatory for paper processing not to improve cut quality but to suppress flame. Never process paper or cardboard without air assist active and a charged CO2 extinguisher within arm‘s reach.

2. Paper Engraving Parameters

3. Rubber Parameters

Laser rubber specifically formulated for CO2 processing contains additives that promote clean vaporization without the sticky residue that natural rubber produces. The stamp-making industry has standardized on 2.3 mm laser rubber with a fabric backing that the laser does not cut through, enabling kiss-cutting that separates individual stamps without cutting the backing sheet. For detailed stamp engraving guidance, YIHAICNC‘s technical blog includes application-specific tutorials on shoulder angle optimization and multi-pass engraving sequences.

Ⅶ. Glass, Stone, and Coated Metals Parameters

Glass and stone do not cut with a CO2 laser—they engrave through controlled surface fracturing. Coated metals can be marked by removing the coating layer to expose bare metal beneath.

1. Glass Engraving Parameters

Glass engraving with a CO2 laser is fundamentally a controlled micro-fracturing process. The 10.6 µm beam does not vaporize glass—it induces rapid localized thermal expansion that creates a network of microscopic surface cracks. These cracks scatter light and appear as a white frosted mark. The wet paper towel method is essential because water absorbs the 10.6 µm beam energy preferentially, moderating the thermal shock and preventing the deep fractures that cause glass to shatter. According to established laser glass processing protocols, the paper or soap layer must remain wet throughout the entire engraving cycle. More specific parameter details are available through YIHAICNC‘s after-sales service and technical support.

2. Stone and Tile Engraving Parameters

Stone engraving produces excellent results for memorial plaques, architectural signage, and decorative tiles. The darker and more polished the stone surface, the higher the engraving contrast. Polished black granite is the gold standard for laser photo engraving due to its uniform surface and the bright white mark that the laser produces. Unlike glass, stone does not require a wet paper overlay—the laser can engrave dry stone directly, though dust generation requires extraction.

3. Coated Metal Marking Parameters (CO2 Laser)

CO2 lasers cannot directly engrave bare metals—the 10.6 µm wavelength is reflected by metallic surfaces. However, coated metals can be processed by removing the coating. Anodized aluminum is the most popular coated metal for CO2 laser marking because the anodized dye layer vaporizes cleanly, exposing the bright silver aluminum beneath with excellent contrast. For bare metal marking, a marking compound must be applied to the surface; the laser bonds the compound to the metal, creating a permanent dark mark that withstands abrasion and chemical exposure.

Ⅷ. Parameter Optimization Methodology: From Starting Point to Production-Ready

Every table in this guide provides starting parameters—the settings that experienced operators have converged on after testing. Turning these starting parameters into production-ready settings that maximize throughput while maintaining quality requires systematic optimization.

1. The Power-Speed Balance for Vector Cutting

2. The Power-Speed-Resolution Balance for Raster Engraving

3. The Frequency Sweet Spot

PWM frequency affects how the laser tube delivers power within each pulse. Low frequency (500–1,000 Hz) produces distinct pulses with higher peak power, ideal for cutting and for creating a slightly textured engraving surface. High frequency (2,000–5,000 Hz) approaches continuous-wave behavior with smoother energy delivery, producing more uniform engraving fills. The optimal frequency for most CO2 laser applications is 500–1,500 Hz for DC glass tubes and 1,000–5,000 Hz for RF metal tubes. According to Thorlabs‘ laser physics resources, the pulse-to-pulse stability of the tube at a given frequency directly affects engraving uniformity.

4. Material-Specific Optimization Notes

Ⅸ. Common Parameter Mistakes and Their Symptoms

The following table maps the most frequently observed parameter errors to their visible symptoms, enabling rapid diagnosis on the production floor.

Ⅹ. FAQ

1. Why do my acrylic cuts look melted instead of polished?

Melted acrylic edges indicate excessive heat input—the material is melting and re-flowing rather than vaporizing cleanly. Cast acrylic produces a pristine polished edge only when the beam energy is sufficient to vaporize the material instantly without heat accumulation. Reduce power by 5–10% and increase speed until the edge transitions from melted to polished. If the cut does not penetrate at the higher speed, increase power slightly and test again. Extruded acrylic will always produce a slightly less polished edge than cast acrylic due to its lower molecular weight and different thermal properties.

2. How often should I recalibrate my parameter settings?

Parameters should be re-validated whenever a significant variable changes: laser tube replacement, mirror cleaning or replacement, focal lens replacement, new material batch from a different supplier, or significant seasonal humidity changes. A quick power test grid—a 10 × 10 matrix of power and speed values—should be run monthly to track tube degradation. DC glass tubes lose approximately 5–10% of their optical output per 1,000 operating hours, requiring gradual parameter adjustment over the tube‘s service life. RF metal tubes degrade much more slowly but should still be tested quarterly.

3. Can I use the same parameters for the same material from different suppliers?

Not reliably. Plywood from different mills varies in core species, glue type, and moisture content. Acrylic from different manufacturers varies in molecular weight and casting method. Even paper from different batches can have different moisture content and filler composition. Always run a small test grid on each new batch. If the edge quality or engraving contrast changes, adjust parameters to match the specific batch. Record batch-specific parameters—consistent industrial output depends on this discipline.

4. What is the best DPI for photo engraving on wood and acrylic?

For photo engraving on wood, 508 DPI with 0.05 mm line interval and Jarvis dithering produces the smoothest tonal transitions. For acrylic, 423–508 DPI with Stucki dithering yields excellent results, particularly when engraving the back side of clear acrylic for front viewing. Higher DPI increases process time quadratically—doubling DPI quadruples the number of scan lines. For production photo engraving where throughput matters, 318 DPI with 0.08 mm interval provides acceptable quality at significantly faster processing speed.

5. Why does my laser not cut through 6 mm plywood in one pass even at maximum power?

Several factors can prevent single-pass through-cutting: the laser tube may have degraded and is no longer delivering rated power; the focal lens may be contaminated, scattering beam energy; the focus may be set incorrectly; the air assist may be insufficient to clear the kerf of char and vapor; or the plywood may have higher density or moisture content than the batch used to establish parameters. Systematically verify each factor: clean all optics, perform a ramp focus test, measure actual tube current with an ammeter, and test a fresh piece of plywood from a different batch.

6. How do I create a material test grid for my specific machine?

A material test grid is a single file containing a matrix of squares, each engraved at a different combination of power and speed. The X-axis varies power in 5% increments; the Y-axis varies speed in 10–15 mm/s increments. When engraved on a single piece of material, the grid reveals the optimal combination—the square with the desired engraving darkness, edge quality, or cut depth—in one test run. YIHAICNC‘s technical blog provides downloadable test grid files pre-configured for common software platforms. Running a test grid on each new material batch is the single most efficient way to converge on optimal production parameters.

7. What safety precautions are essential when using these high-power parameters?

The parameter tables in this guide assume the following safety measures are in place: a fully enclosed Class 1 laser system with interlocked access doors, a verified fume extraction system with HEPA and activated carbon filtration rated for continuous duty, a charged CO2 fire extinguisher mounted within arm‘s reach of the machine, operator training on material-specific fire risks (acrylic burns vigorously; paper ignites at 233°C; MDF produces formaldehyde fume), and a strict no-unattended-operation policy. OSHA laser safety standards require that lasers be turned off when unattended for substantial periods. For additional safety guidance, consult the documentation provided with YIHAICNC‘s after-sales service.

Ⅺ. Conclusion

This co2 laser speed and power chart consolidates the parameter knowledge that experienced operators accumulate across years of trial and error into a single production reference. The tables span the full range of non-metal materials processed on CO2 laser systems—acrylic, plywood, solid wood, MDF, leather, fabric, paper, rubber, glass, stone, and coated metals—with separate settings for vector cutting, raster engraving, and specialized processes.

Every parameter in this guide is a starting point, not an absolute. Tube age, beam quality, optics condition, material batch variation, altitude, and humidity all shift the optimal setting by 5–10%. The systematic tuning methodology in Section Ⅱ and the optimization guidance in Section Ⅷ provide the tools to adapt these baselines to any specific machine configuration. The common mistakes table in Section Ⅸ enables rapid diagnosis when results deviate from expectations.

Bookmark this reference. Print the relevant tables and post them at the laser workstation. Run a test grid on every new material batch. And when the parameters in this guide have been validated and tuned on your specific machine, record them in your shop‘s own parameter library. The most valuable reference is the one calibrated to your equipment, your materials, and your quality standards.

Further Reading on Laser and CNC Parameters:

• CO2 Laser Metal Engraving Settings – Power & Speed Chart — Use the same CO2 machine to mark anodized aluminum, brass, and powder‑coated metals.
• CNC Router Speeds & Feeds for Non‑Metal Materials — When laser can’t handle thickness or material restrictions, switch to a router.
• Fiber Laser Metal Cutting – Speed & Power Settings — Compare how a different laser technology handles metals.