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  3. K1 7W vs Flex 7W

Acmer K1 7W vs Ikier Flex 7W

What K1 7W does better (2) and where Flex 7W wins (1) — every spec side by side.

Acmer K1 7W
Acmer · 2025K1 7W
4.5Score
2 advantages≈ US$230
Higher score
vs
Ikier Flex 7W
Ikier · 2026Flex 7W
4.2Score
1 advantage≈ US$250
4.4Power & cutting4.4
3.5Speed3.5
4.0Precision2.5
9.6Safety7.7
2.9Features & ease of use4.3
Dimensions

Size comparison

K1 7WFlex 7W
286 × 190273265 × 185303
K1 7WFlex 7WDifference
Height190 mm185 mm+5 mm
Width286 mm265 mm+21 mm
Depth273 mm303 mm−30 mm
Weight2.4 kg3 kg−0.6 kg

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

Why is K1 7W better than Flex 7W?

  1. Positioning accuracy0.04 mm vs 0.1 mm2.5×
  2. Weight2.4 kg vs 3 kg+25%

Why is Flex 7W better than K1 7W?

  1. Air assistNo · K1 7W: Yes
Specifications

Side by side

Acmer K1 7WAcmer K1 7W≈ US$2304.5
Ikier Flex 7WIkier Flex 7W≈ US$2504.2
General
Laser sourcesBlue diode (≈455 nm)Blue diode (≈455 nm)
Motion systemGantry (XY rails)Gantry (XY rails)
Two laser sourcesNoNo
Laser power
Laser output power7 W7 W
Work area
Work area150 × 150 mm—
Work area width (X)150 mm—
Work area depth (Y)150 mm—
Work area (surface)225 cm²—
Max workpiece height—50 mm
Speed & cutting
Max engraving / travel speed167 mm/s167 mm/s
Precision
Positioning accuracy0.04 mm0.1 mm
Safety
Enclosed (fully covered)YesYes
Laser safety class—Class 1 (eye-safe, enclosed)
Flame / fire detectionNoNo
Tilt / movement sensor—Yes
Features
Air assistNoYes
Built-in cameraNoNo
Autofocus / auto heightNoNo
Connectivity & software
Connections—USB
Wi-Fi—No
USB—Yes
Compatible softwareLightBurnAtomStack Studio
LightBurn compatibleYes—
Size & power
Width286 mm265 mm
Depth273 mm303 mm
Height190 mm185 mm
Weight2.4 kg3 kg
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