OMTech K40 settings — cut & engrave cheat sheet
Tested starting-point power, speed and pass settings for the OMTech K40 40 W CO2 (CO2 (40 W)). Every machine and material batch differs — treat these as a fast start, then fine-tune with a test grid.
Price a job on the OMTech K40 →OMTech K40 settings (power % / speed mm/s / passes)
| Material | Job | Setting |
|---|---|---|
| Plywood 3 mm | Cut | 70% / 12 / 1 pass |
| MDF 3 mm | Cut | 75% / 10 / 1 pass |
| Acrylic 3 mm | Cut | 70% / 10 / 1 pass |
| Acrylic 5 mm | Cut | 85% / 6 / 1 pass |
| Leather 2 mm | Cut | 40% / 20 / 1 pass |
| Wood | Engrave | 25% / 250 mm/s |
| Acrylic | Engrave | 25% / 250 mm/s |
| Glass | Engrave | 30% / 200 mm/s |
Always: use air assist, focus for the exact thickness, and don't hold 100% power to force a cut — slow the speed or add a pass instead. Find your exact numbers with a material test grid.
Get an exact price for the OMTech K40
Settings give you the speed; the calculator turns your file's path length into machine time and cost, scaled to the OMTech K40.
Open the OMTech K40 calculator →FAQ
What power and speed cuts 3 mm plywood on the OMTech K40?
On the OMTech K40 40 W CO2, a tested starting point for 3 mm plywood is 70% power at / 12 / 1 pass. Values are starting points — run a small test on the same sheet, and use air assist for a clean edge.
Can the OMTech K40 cut clear acrylic?
Yes. The OMTech K40 is a CO2 laser, which cuts clear acrylic cleanly with a flame-polished edge. Use one slower pass with gentle air assist for the glossiest edge.
How much does it cost to run the OMTech K40?
Laser jobs are priced by machine time: cut length ÷ cutting speed × passes = time, then time × hourly rate + setup. Drop your file into the free calculator scaled to the OMTech K40 to get an exact time and price.