Home › Machines › OMTech K40 (40W CO2)
OMTech K40 (40W CO2) specs, bed size and cutting speeds
The OMTech K40 (40W CO2) is a CO2 40–45 W laser with a 300 × 200 mm work area. Below: full specs, real cutting speeds by material, and what a part costs in machine time. Drop your SVG, DXF or PDF to price your own file — it runs entirely in your browser and nothing is uploaded.
Open the calculator for the OMTech K40 (40W CO2) →OMTech K40 (40W CO2) specs
| Laser type | CO2 (10,600 nm) |
|---|---|
| Power class | CO2 40–45 W |
| Bed size (work area) | 300 × 200 mm |
| Work area (inches) | 11.8 × 7.9 in |
| Cuts | clear and opaque acrylic, plywood, MDF, card, leather, fabric |
| Approx. price | ~€450–550 (machine only, August 2026 — from our budget laser engraver guide) |
OMTech K40 (40W CO2) cutting cost examples
Machine time and price for a 100 × 60 mm part (320 mm of cutting) at €60/h, by material:
| Material | Speed | Time | Price |
|---|---|---|---|
| Plywood 3 mm | 10 mm/s | 32 s | €0.53 |
| MDF 3 mm | 11 mm/s | 29 s | €0.48 |
| Acrylic 3 mm | 9 mm/s | 36 s | €0.59 |
| Cardboard 3 mm | 17.5 mm/s | 18 s | €0.30 |
These scale from real workshop speeds. Your parts differ — open the calculator and drop your file or enter your size for an exact figure. You can also switch to engraving.
What this machine physically cannot do
This is a CO2 laser at 10.6 µm, the wavelength organic materials absorb best. It cuts clear cast acrylic to a flame-polished edge, which no diode can do at any power, and it handles wood, leather, card, fabric and rubber faster and more cleanly than a diode of similar nominal wattage.
It cannot mark bare metal without a coating spray such as CerMark — for bare steel or aluminium you want a fiber laser. It also must not be pointed at PVC, vinyl or anything chlorine-bearing: the gas produced corrodes the mirrors, rails and electronics, and is dangerous to breathe.
The trade-off against a diode is maintenance. A CO2 machine has mirrors that need alignment, a tube that is a consumable with a finite life, and usually a water cooling loop to look after.
What fits, and what it is like to live with
The bed is 300 × 200 mm. In practice that means it takes nothing larger than a small offcut, and you can nest roughly 6 100 mm coaster blanks in a single run before you have to reload.
Anything bigger than the bed has to be cut in sections and joined, or ordered in pre-cut sheets. If you expect to work at A3 and above regularly, that constraint will shape your whole workflow — worth weighing before you buy.
Entry CO2 — the cheapest way to cut clear acrylic. Expect to spend time on it: at this end the extraction, the cooling and often the alignment are things you improve yourself. What you get in return is a genuine CO2 beam, and 3 mm acrylic and plywood cut fast and clean.
OMTech K40 (40W CO2) FAQ
How fast does the OMTech K40 (40W CO2) cut 3 mm plywood?
About 10 mm/s. Cutting a 100 × 60 mm part (320 mm of cut) takes roughly 32 s of machine time on the OMTech K40 (40W CO2).
Can the OMTech K40 (40W CO2) cut clear acrylic?
Yes. The OMTech K40 (40W CO2) is a CO2 laser (10,600 nm) and cuts both clear and opaque acrylic, plus plywood, MDF, leather, card and fabric.
What is the OMTech K40 (40W CO2) bed size?
The OMTech K40 (40W CO2) has a 300 × 200 mm work area (11.8 × 7.9 inches). That is the largest part it can cut in one pass without repositioning the material.
How much does it cost to run the OMTech K40 (40W CO2)?
Laser cutting is priced by machine time: cut length ÷ cutting speed × passes = time, then time × hourly rate + setup. At €60/h a 100 × 60 mm plywood part costs about €0.53. Use the calculator to price your own file.
How much does the OMTech K40 (40W CO2) cost?
~€450–550 as of August 2026, for the machine alone. Budget extra for extraction, a decent air assist and material. Street prices move, so treat this as a starting point and check the seller before you quote work on it. Full reasoning in our budget laser engraver guide.
Where to buy the OMTech K40 (40W CO2)
Prices move often — check current offers before you quote jobs on a machine you don't own yet.
OMTech official store ↗ Check price on Amazon ↗
Some links are affiliate links: if you buy through them we may earn a small commission at no extra cost to you. It keeps this calculator free.
Machines similar to the OMTech K40 (40W CO2)
Comparable on speed, bed size and material capability — the specs side by side:
- Glowforge Basic / Plus / Pro — CO2 40–45 W, 495 × 279 mm, 12 mm/s in 3 mm plywood. similar class
- OMTech Polar / Polar+ (55W) — CO2 50–60 W, 500 × 300 mm, 13 mm/s in 3 mm plywood. similar class
- xTool P2 / P2S (55W) — CO2 50–60 W, 600 × 308 mm, 13 mm/s in 3 mm plywood. similar class
Or see the full machine list and the complete speed table.
← All machine calculators · Full speed table · Main calculator