OMTech Polar2 70W
#4 in CO2Full review
A big bed, camera equipped CO2 laser for small shops that want more power and a bigger bed than a P2S. Confirm the air assist and focusing setup before buying.
Amazon $3,699.99$3,699.99
4.0/5
A low cost CO2 starter for tinkerers who want acrylic and glass work on a budget and don’t mind hands on setup. Its small bed rules out signs.
- 45 WLaser power
- 305 x 203 mmWork area
- YesEnclosed
- 300 mm/sSpeed
Check price at Amazon$769.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- The cheapest way into a CO2 laser for clear acrylic, glass and leather
- Built in air assist cuts down on charring and protects the lens
- Works with LightBurn and the free LaserGRBL
- A 2 year machine warranty from a maker with US support
Cons
- A 12 x 8 in bed limits it to small parts and coasters
- Needs water cooling set up and a window vent for the fumes
- No camera or autofocus: focus and alignment are done by hand
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its laser type. How we rank explains each one.
Specifications
| Model number | SH-K40 |
|---|---|
| Laser | |
| Type | CO2 |
| Optical power | 45 W |
| Work area | 305 x 203 mm |
| Maximum speed | 300 mm/s |
| Features | |
| Enclosed | Yes |
| Air assist | Yes |
| Warranty | 2 years |
Alternatives in this laser type
xTool P2S
#5 in CO2Full review
A smart, camera guided CO2 laser for crafters and small sellers who want cleaner, faster cuts than a diode and acrylic work. It costs more per watt than the plain OMTech and VEVOR boxes.
Amazon $2,918.99$2,918.99
VEVOR 55W CO2 20x12
#7 in CO2Full review
A feature packed 55 W CO2 for crafters who want a camera and autofocus for less than an xTool P2S. The unclear warranty makes it a bigger gamble.
Amazon $2,259.90$2,259.90
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