A laser cutter material settings guide takes the trial-and-error out of dialing in your machine. Speed, power, and pass settings vary by material type, thickness, and laser wattage — use the filters below to find the right starting point for your CO2 or diode laser.
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Starting Points Only
These are community-validated starting points. Always test on scrap material first. Settings vary by machine brand, lens condition, and exact material density. Never leave a laser unattended.
How to Use the Laser Cutter Settings Guide
Finding the right laser cutter settings for a new material means balancing speed, power, and pass count. Too fast and you won't cut through; too slow and you get excessive charring and fire risk. Use this reference to find tested starting points, then dial in from there.
Step 1: Select Your Laser Type and Wattage
CO2 and diode lasers behave very differently. CO2 lasers (40W–100W) are better for cutting acrylic, thick wood, and leather. Diode lasers (20W–60W) excel at engraving and work on dark materials and thin wood, but struggle with clear acrylic. Select your machine type and wattage first to filter to relevant settings.
Step 2: Search for Your Material
Type your material into the search box — "acrylic," "plywood," "leather," "cardstock," etc. The table filters in real time. Results show both cutting and engraving settings for each material and thickness combination.
Step 3: Read the Settings
Each row shows speed (mm/s or in/s), power (%), and number of passes. You can toggle between mm/s and in/s using the speed units control. For cutting: use the cut mode settings. For surface engraving: use engrave mode settings, which typically run faster at lower power to avoid burning too deep.
Step 4: Copy Settings to Clipboard
Click the copy button on any row to copy the full settings string to your clipboard, ready to paste into your laser software's material presets. Copy all visible settings with the "Copy all" button when you need to transfer multiple entries at once.
Material-Specific Notes
Acrylic (cast): Cuts cleanly with a polished edge. Avoid extruded acrylic for cutting — it tends to melt rather than cut cleanly. Plywood (Baltic birch): Settings vary by ply quality; avoid glue-heavy spots. Leather (vegetable-tanned): Cuts well and engraves beautifully. Avoid chrome-tanned leather — it releases hexavalent chromium when burned. Fabric: Always use air assist to prevent flare-ups. MDF: Produces formaldehyde fumes — ensure excellent ventilation.
FAQ
What laser settings should I use for 3mm acrylic?
For cast acrylic on a 40W CO2 laser, start with 15–20mm/s speed and 80–90% power for cutting, requiring 1–2 passes. On a 60W laser, try 25–30mm/s at 75–80% power. Always test on a scrap piece first, as acrylic thickness and brand affect results.
Why do CO2 and diode lasers need different settings?
CO2 lasers use a 10,600nm infrared wavelength that efficiently cuts and engraves organic materials like wood, acrylic, and leather. Diode lasers use a 450nm blue-violet wavelength that works best on dark materials and struggles with clear acrylic. The same wattage in each type produces different results, so settings tables are laser-type specific.
What does 'number of passes' mean for laser cutting?
Passes refers to how many times the laser head travels over the same path. Some materials, especially thicker wood or leather, may need 2–3 passes at a gentler setting to cut cleanly without scorching, rather than one high-power pass. Multiple passes also reduce charring on MDF and plywood.
Should I use air assist when laser cutting?
Yes — air assist (blowing air at the cut point) dramatically improves cut quality by clearing smoke residue, reducing charring, and cooling the cut zone. It is especially important for acrylic and wood. Settings in this guide assume air assist is active. Without it, you may need to reduce speed by 10–20%.
Are these settings safe starting points?
These settings are community-validated starting points based on common CO2 and diode laser machines. Always start conservatively, run a test on scrap material, and never leave a laser unattended. Settings vary by machine brand, lens condition, and material density — always verify before running a full job.
Is my data saved or sent anywhere?
No. All filtering and search happens in your browser. Nothing is sent to any server. Your searches remain completely private.