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  3. S2 20W vs Flex 12W

Acmer S2 20W vs Ikier Flex 12W

What S2 20W does better (1) and where Flex 12W wins (1) — every spec side by side.

Acmer S2 20W
Acmer · 2025S2 20W
6.4Score
1 advantage≈ US$320
Higher score
vs
Ikier Flex 12W
Ikier · 2026Flex 12W
5.0Score
1 advantage≈ US$310
7.7Power & cutting6.7
3.5Speed3.5
8.7Precision2.5
3.2Safety7.7
5.7Features & ease of use4.3
Dimensions

Size comparison

S2 20WFlex 12W
490 × 195500265 × 185303
S2 20WFlex 12WDifference
Height195 mm185 mm+10 mm
Width490 mm265 mm+225 mm
Depth500 mm303 mm+197 mm

Drawn to the same scale from the official dimensions (front and side).

Why is S2 20W better than Flex 12W?

  1. Laser output power20 W vs 12 W+67%

Why is Flex 12W better than S2 20W?

  1. Enclosed (fully covered)No · S2 20W: Yes
Specifications

Side by side

Acmer S2 20WAcmer S2 20W≈ US$3206.4
Ikier Flex 12WIkier Flex 12W≈ US$3105.0
General
Laser sourcesBlue diode (≈455 nm)Blue diode (≈455 nm)
Motion systemGantry (XY rails)Gantry (XY rails)
Two laser sourcesNoNo
Laser power
Laser output power20 W12 W
Work area
Work area300 × 300 mm—
Work area width (X)300 mm—
Work area depth (Y)300 mm—
Work area (surface)900 cm²—
Max workpiece height—50 mm
Speed & cutting
Max engraving / travel speed167 mm/s167 mm/s
Precision
Laser spot size0.06 mm—
Positioning accuracy—0.1 mm
Safety
Enclosed (fully covered)NoYes
Laser safety class—Class 1 (eye-safe, enclosed)
Flame / fire detectionNoNo
Tilt / movement sensor—Yes
Features
Air assistYesYes
Built-in cameraNoNo
Autofocus / auto heightNoNo
Rotary attachment supportYes—
Connectivity & software
Connections—USB
Wi-Fi—No
USB—Yes
Compatible softwareLightBurnAtomStack Studio
LightBurn compatibleYes—
Size & power
Width490 mm265 mm
Depth500 mm303 mm
Height195 mm185 mm
Weight—3 kg
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