OMTech K40+ 45W
#6 in CO2Full review
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.
Amazon $769.99$769.99
The OMTech K40+ 45W is the better laser engraver overall, rated 4.0 to 3.6. The OMTech K40+ 45W leads on value. The OMTech Polar2 Pro 50W RF wins on work area. The OMTech K40+ 45W costs $4,030 less ($769.99 vs $4,799.99).
OMTech Polar2 Pro 50W RF
#9 in CO2Full review
The pick for engraving businesses that run all day and want an RF tube that needs no water and lasts for years. Shops that mostly cut thick stock get more for less from the 70 W glass version.
Amazon $4,799.99$4,799.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the OMTech K40+ 45W for value ($17.11 per optical watt ($769.99, 45 W) vs $96 per optical watt ($4,799.99, 50 W)).
- Choose the OMTech Polar2 Pro 50W RF for work area (711 x 356 mm work area vs 305 x 203 mm work area).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every CO2 laser engraver; a clear win is highlighted. How we rank explains each one.
| Factor weight | OMTech K40+ 45W | OMTech Polar2 Pro 50W RF |
|---|---|---|
| Overall rating | 4.0/5 | 3.6/5 |
| Value 35% | 100 $17.11 per optical watt ($769.99, 45 W) | 28 $96 per optical watt ($4,799.99, 50 W) |
| Work area 15% | 1 305 x 203 mm work area | 100 711 x 356 mm work area |
| Features 30% | 55 enclosed, air assist | 55 enclosed, camera |
| Warranty 20% | 100 2-year warranty | 100 2-year warranty |
Specifications
| OMTech K40+ 45W | OMTech Polar2 Pro 50W RF | |
|---|---|---|
| Laser | ||
| Type | CO2 | CO2 |
| Optical power | 45 W | 50 W |
| Work area | 305 x 203 mm | 711 x 356 mm |
| Maximum speed | 300 mm/s | 2,000 mm/s |
| Features | ||
| Enclosed | Yes | Yes |
| Camera | - | Yes |
| Air assist | Yes | - |
| Warranty | 2 years | 2 years |
| Released | - | 2026-07-06 |