K40 CO2 vs OMTech 40W CO2 — Which Should You Buy?

Side-by-side specs, settings, and decision guide. Both have community-tested settings for 48 shared materials.

K40 CO2: $399 vs OMTech 40W CO2: $599 — prices as of 2026, check retailer for current pricing.

Where to buy

Buy the K40 CO2 — check current price & availability

Buy on Amazon →

Affiliate link — we may earn a small commission at no extra cost to you.

Where to buy

Buy the OMTech 40W CO2 — check current price & availability

Buy on Amazon →

Affiliate link — we may earn a small commission at no extra cost to you.

Which one should you buy?

Pick the OMTech 40W CO2 if you want: more cutting power (40W vs 35W); native LightBurn support (industry-standard).

K40 CO2

Price
$399

Power
35W

Laser Type
co2

Buy K40 CO2 →

OMTech 40W CO2

Price
$599

Power
40W

Laser Type
co2

Work Area
300×200mm

Software

LightBurn

Buy OMTech 40W CO2 →

79 settings for K40 CO2190 settings for OMTech 40W CO2

Settings Comparison

Material · Operation	K40 CO2	OMTech 40W CO2
2mm Basswood Plywoodcut	—	28 mm/s · 32% · air assist
3mm Baltic Birch Plywoodcut	18 mm/s · 80% · 2× passes · air assist	20 mm/s · 75% · 2× passes · air assist
3mm Basswood Plywoodcut	20 mm/s · 55%	20 mm/s · 40% · air assist
3mm Black Acryliccut	10 mm/s · 60%	22 mm/s · 60–70% · air assist
3mm Cherry Plywoodcut	—	18 mm/s · 46% · air assist
3mm Clear Acryliccut	6 mm/s · 90% · air assist	12 mm/s · 55% · air assist
3mm Coloured Acryliccut	—	14 mm/s · 62% · air assist
3mm Hardboard HDFcut	—	12 mm/s · 55% · air assist
3mm Maple Plywoodcut	—	16 mm/s · 48% · air assist
3mm MDFcut	12 mm/s · 65%	30 mm/s · 65–75% · air assist
3mm Mirrored Acryliccut	—	12 mm/s · 55% · air assist
3mm Tinted Acryliccut	—	18 mm/s · 62% · air assist
3mm Walnut Plywoodcut	16 mm/s · 72%	18 mm/s · 45% · air assist
5mm Plywoodcut	—	10 mm/s · 60% · 2× passes · air assist
6mm Baltic Birch Plywoodcut	10 mm/s · 85% · 2× passes	7 mm/s · 70% · 2× passes · air assist
6mm Basswood Plywoodcut	—	8 mm/s · 65% · 2× passes · air assist
6mm Clear Acryliccut	—	6 mm/s · 72% · 2× passes · air assist
6mm MDFcut	8 mm/s · 88% · 2× passes	8 mm/s · 62% · 2× passes · air assist
9mm Birch Plywoodcut	—	4 mm/s · 78% · 3× passes · air assist
Acrylic Feltcut	55 mm/s · 28%	55 mm/s · 28%
Acryliccut	—	12 mm/s · 70% · air assist
Alder 3mmcut	—	22 mm/s · 52% · air assist
Aldercut	—	250 mm/min · 95% · 2× passes · air assist
Bamboo 3mmcut	18 mm/s · 68% · air assist	22 mm/s · 50% · air assist
Bamboo Cutting Boardcut	—	14 mm/s · 80–85% · air assist
Bamboocut	16 mm/s · 85% · 2× passes · air assist	250 mm/min · 100% · 2× passes · air assist
Basswoodcut	22 mm/s · 70% · air assist	30 mm/s · 55–70% · air assist
Cardboard (corrugated, ~3–4mm)cut	—	80 mm/s · 45%
Cardboardcut	25 mm/s · 40%	60 mm/s · 20%
Cardstock 160gsmcut	50 mm/s · 12%	60 mm/s · 15%
Cardstock 300gsmcut	85 mm/s · 18%	80 mm/s · 10%
Cardstock (80–110 lb / ~220–300 gsm)cut	—	100 mm/s · 20%
Cardstockcut	30 mm/s · 25%	80 mm/s · 12%
Cedar 3mmcut	—	22 mm/s · 50% · air assist
Cedarcut	—	400 mm/min · 85% · air assist
Cherry 3mmcut	—	18 mm/s · 58% · air assist
Cherrycut	—	250 mm/min · 100% · 2× passes · air assist
Chipboard 2mmcut	28 mm/s · 58% · air assist	30 mm/s · 28% · air assist
Copy Paper 80gsmcut	100 mm/s · 12%	100 mm/s · 12%
Cork 3mmcut	28 mm/s · 35% · air assist	28 mm/s · 35% · air assist
Cork Sheet 3mmcut	—	25 mm/s · 35% · air assist
Corkcut	30 mm/s · 40%	30 mm/s · 45%
Corrugated Cardboard 4mmcut	—	22 mm/s · 45%
Corrugated Cardboardcut	35 mm/s · 45%	35 mm/s · 45%
Cotton Fabriccut	15 mm/s · 45–50% · air assist	50 mm/s · 18% · air assist
Craft Felt 3mmcut	—	45 mm/s · 16%
Denim Fabriccut	17 mm/s · 50–55% · air assist	45 mm/s · 22% · air assist
EVA Foam 3mmcut	—	40 mm/s · 20% · air assist
EVA Foam 6mmcut	45 mm/s · 32%	45 mm/s · 32%
Faux Leathercut	35 mm/s · 45% · air assist	35 mm/s · 45% · air assist
Feltcut	—	800 mm/min · 25%
Foam Board 5mmcut	42 mm/s · 35%	42 mm/s · 35%
Foamcut	—	50 mm/s · 15%
Genuine Leather (Veg-Tan, ~3mm)cut	25 mm/s · 50–60% · air assist	28 mm/s · 45–55% · air assist
Genuine Leathercut	10 mm/s · 60–65% · air assist	20 mm/s · 35% · air assist
HTV Vinylcut	90 mm/s · 12%	90 mm/s · 12%
Kraft Papercut	105 mm/s · 8%	80 mm/s · 12%
Leathercut	22 mm/s · 65% · air assist	10 mm/s · 50% · air assist
Maplecut	10 mm/s · 70–80% · 2× passes	19 mm/s · 50–55% · air assist
Mylar Stencil 7.5milcut	68 mm/s · 18%	68 mm/s · 18%
Oak 3mmcut	—	15 mm/s · 65% · air assist
Oakcut	—	200 mm/min · 100% · 2× passes · air assist
Papercut	—	100 mm/s · 10%
Pine 3mmcut	—	20 mm/s · 55% · air assist
Pinecut	—	350 mm/min · 90% · air assist
Plywoodcut	16 mm/s · 85% · 2× passes · air assist	25 mm/s · 60–70% · air assist
Rubber Stamp Blankcut	11 mm/s · 60–65% · air assist	11 mm/s · 60–65% · air assist
Rubber Stamp Materialcut	7 mm/s · 80–85% · air assist	8 mm/s · 80–85% · air assist
Rubbercut	—	8 mm/s · 80–85% · air assist
Walnutcut	10 mm/s · 70–80% · 2× passes	17 mm/s · 55–60% · air assist
Washi Tapecut	—	150 mm/s · 8%
2mm Basswood Plywoodengrave	—	400 mm/s · 5–10%
3mm Basswood Plywoodengrave	200 mm/s · 30%	300 mm/s · 30%
3mm Black Acrylicengrave	150 mm/s · 15–20%	350 mm/s · 18–25%
3mm Cherry Plywoodengrave	—	250 mm/s · 28%
3mm Clear Acrylic (Cast)engrave	390 mm/min	420 mm/min
3mm Clear Acrylicengrave	100 mm/s · 25–30%	200 mm/s · 20%
3mm Hardboard HDFengrave	—	200 mm/s · 15–20%
3mm Maple Plywoodengrave	360 mm/min	390 mm/min
3mm MDFengrave	200 mm/s · 15–20%	450 mm/s · 20–28%
3mm Mirrored Acrylicengrave	360 mm/min	400 mm/min
3mm Walnut Plywoodengrave	350 mm/s · 20%	250 mm/s · 10–15%
5mm Plywoodengrave	—	150 mm/s · 15–20%
6mm Baltic Birch Plywoodengrave	—	100 mm/s · 15–20%
6mm Basswood Plywoodengrave	—	250 mm/s · 35%
6mm Clear Acrylicengrave	—	100 mm/s · 20–25%
6mm MDFengrave	—	100 mm/s · 15–20%
9mm Birch Plywoodengrave	—	100 mm/s · 20–25%
Acrylic Feltengrave	500 mm/s · 5–10%	500 mm/s · 5–10%
Acrylicengrave	—	300 mm/s · 20%
Alder 3mmengrave	—	300 mm/s · 18%
Alderengrave	—	350 mm/min · 55%
Anodized Aluminumengrave	250 mm/s · 25%	300 mm/s · 40%
Bamboo 3mmengrave	250 mm/s · 15–20%	310 mm/s · 16%
Bamboo Cutting Boardengrave	220 mm/s · 28%	250 mm/s · 35%
Bambooengrave	—	350 mm/s · 30%
Basswoodengrave	—	500 mm/s · 22–30%
Cardboard (corrugated, ~3–4mm)engrave	—	200 mm/s · 15%
Cardboardengrave	—	500 mm/s · 5–8%
Cardstock 160gsmengrave	500 mm/s · 5–8%	300 mm/s · 8%
Cardstock 300gsmengrave	500 mm/s · 5–8%	400 mm/s · 6%
Cardstock (80–110 lb / ~220–300 gsm)engrave	—	300 mm/s · 8%
Cardstockengrave	—	300 mm/s · 6%
Cedar 3mmengrave	—	300 mm/s · 16%
Cedarengrave	—	400 mm/min · 45%
Ceramic Tileengrave	220 mm/s · 55%	180 mm/s · 65%
Cherry 3mmengrave	—	290 mm/s · 20%
Cherryengrave	—	350 mm/min · 55%
Chipboard 2mmengrave	400 mm/s · 15–20%	350 mm/s · 10%
Coated / Powder Coated Steelengrave	—	300 mm/min · 50%
Copy Paper 80gsmengrave	500 mm/s · 5–8%	500 mm/s · 5–8%
Cork 3mmengrave	250 mm/s · 20%	250 mm/s · 22%
Cork Sheet 3mmengrave	—	300 mm/s · 12%
Corrugated Cardboard 4mmengrave	—	300 mm/s · 18%
Corrugated Cardboardengrave	500 mm/s · 10–15%	500 mm/s · 10–15%
Cotton Fabricengrave	280 mm/s · 16%	280 mm/s · 16%
Craft Felt 3mmengrave	—	200 mm/s · 15%
Denim Fabricengrave	300 mm/s · 18%	350 mm/s · 8%
EVA Foam 3mmengrave	—	350 mm/s · 8%
EVA Foam 6mmengrave	500 mm/s · 5–10%	500 mm/s · 5–10%
Faux Leatherengrave	500 mm/s · 10–15%	500 mm/s · 10–15%
Feltengrave	—	2500 mm/min · 10–15%
Foam Board 5mmengrave	500 mm/s · 5–10%	500 mm/s · 5–10%
Foamengrave	—	150 mm/s · 6%
Genuine Leather (Veg-Tan, ~3mm)engrave	280 mm/s · 15–22% · air assist	300 mm/s · 14–20% · air assist
Genuine Leatherengrave	180 mm/s · 22%	200 mm/s · 25%
Glassengrave	250 mm/s · 25%	320 mm/s · 20%
HTV Vinylengrave	500 mm/s · 5–8%	500 mm/s · 5–8%
Kraft Paperengrave	500 mm/s · 8%	500 mm/s · 5–8%
Leatherengrave	200 mm/s · 18% · 22× passes · air assist	150 mm/s · 10–15%
Mapleengrave	220 mm/s · 22–28%	350 mm/s · 18% · air assist
Marble Tileengrave	80 mm/s · 55%	280 mm/s · 30%
Mylar Stencil 7.5milengrave	500 mm/s · 5–8%	—
Oak 3mmengrave	—	280 mm/s · 22%
Oakengrave	—	300 mm/min · 60%
Paperengrave	—	500 mm/s · 5–8%
Photopolymer Stamp Blankengrave	—	150 mm/s · 40%
Pine 3mmengrave	—	300 mm/s · 18%
Pineengrave	—	400 mm/min · 50%
Plywoodengrave	—	450 mm/s · 22–30%
Powder Coated Steelengrave	—	300 mm/min · 50%
Rubber Stamp Blankengrave	200 mm/s · 22%	200 mm/s · 22%
Rubber Stamp Materialengrave	120 mm/s · 45%	150 mm/s · 50%
Rubberengrave	—	150 mm/s · 35% · air assist
Slate (coaster)engrave	320 mm/s · 18–25%	230 mm/s · 23–28%
Slateengrave	200 mm/s · 65%	250 mm/s · 65%
Spray Painted Metalengrave	—	350 mm/min · 45%
Stainless Steelengrave	200 mm/s · 65%	200 mm/s · 65%
Walnutengrave	220 mm/s · 22–28%	300 mm/s · 20% · air assist
Stainless Steelmark	—	170 mm/s · 75%

All K40 CO2 settings →All OMTech 40W CO2 settings →

Ready to buy the K40 CO2?

Buy on Amazon →

Ready to buy the OMTech 40W CO2?

Buy on Amazon →

Frequently Asked Questions

Which is better, the K40 CO2 or OMTech 40W CO2?

It depends on your use case. K40 CO2 is 35W co2. OMTech 40W CO2 is 40W co2 with 300×200mm bed. See the decision guide and side-by-side specs above.

What materials can both the K40 CO2 and OMTech 40W CO2 cut or engrave?

Both machines have community-tested settings for 48 shared materials. The settings table above lists every material with side-by-side speed, power, passes, and air assist values for direct comparison.

Is the OMTech 40W CO2 or K40 CO2 compatible with LightBurn?

The OMTech 40W CO2 works natively with LightBurn. The K40 CO2 uses . LightBurn compatibility may be possible via a community device profile but is not officially supported.

Is the OMTech 40W CO2 (40W) much faster than the K40 CO2 (35W)?

Higher wattage typically means faster cutting and the ability to cut thicker material in fewer passes. The OMTech 40W CO2 (40W) cuts thicker material in single passes and engraves at higher speeds than the K40 CO2 (35W). For raster engraving the difference is smaller because surface engraving is limited by mechanical scan speed.

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Settings are community-contributed and may not reflect your exact machine configuration or material batch. Always test on scrap first. Some links are affiliate links — we may earn a small commission at no extra cost to you.

What Makers Say

★★★★★5.0· 6 reviews

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★★★★★

"Used it with a Glowforge — engraved beautifully with no changes. I will be purchasing more digital downloads from this shop."

— Anna

★★★★★

"I was struggling with lining up my NFC business cards. I was able to not only line them up much better but also do multiple cards at once — making that job so much easier."

— Camp

★★★★★

"Excellent quality and design. Cut clean and neat!"

— LYNN

★★★★★

"Great jigs. Appreciate the time saved not having to build this from scratch!"

— Bruce

★★★★★

"Excellent quality. Item as described. Expectations exceeded."

— Michael

★★★★★

"This template made my slate coasters so much easier. 4×4 coasters from Michaels drop in easily and are easy to remove. Def worth it."

— chris

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