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  3. K1 7W vs Ray7 7.5W

Acmer K1 7W vs Longer Ray7 7.5W

What K1 7W does better (2) and where Ray7 7.5W wins (7) — every spec side by side.

Acmer K1 7W
Acmer · 2025K1 7W
4.7Score
2 advantages≈ US$230
vs
Longer Ray7 7.5W
Longer · 2026Ray7 7.5W
7.1Score
7 advantages≈ US$230
Higher score
4.4Power & cutting4.6
3.5Speed8.0
4.6Precision6.5
4.0Work area5.4
9.6Safety6.8
2.9Features & ease of use7.0

Why is K1 7W better than Ray7 7.5W?

  1. Enclosed (fully covered)Yes · Ray7 7.5W: No
  2. Positioning accuracy0.04 mm vs 0.06 mm+50%

Why is Ray7 7.5W better than K1 7W?

  1. Work area (surface)225 cm² vs 946 cm²4.2×
  2. Max engraving / travel speed167 mm/s vs 600 mm/s3.6×
  3. Air assistNo · K1 7W: Yes
  4. Laser output power7 W vs 7.5 W+7%
  5. Work area depth (Y)150 mm vs 310 mm2.1×
  6. Work area width (X)150 mm vs 305 mm2×
  7. Flame / fire detectionNo · K1 7W: Yes
Specifications

Side by side

Acmer K1 7WAcmer K1 7W≈ US$2304.7
Longer Ray7 7.5WLonger Ray7 7.5W≈ US$2307.1
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 W7.5 W
Work area
Work area150 × 150 mm305 × 310 mm
Work area width (X)150 mm305 mm
Work area depth (Y)150 mm310 mm
Work area (surface)225 cm²946 cm²
Speed & cutting
Max engraving / travel speed167 mm/s600 mm/s
Precision
Laser spot size—0.06 mm
Positioning accuracy0.04 mm0.06 mm
Safety
Enclosed (fully covered)YesNo
Flame / fire detectionNoYes
Emergency stop button—Yes
Features
Air assistNoYes
Built-in cameraNoNo
Autofocus / auto heightNoNo
Offline engraving (no computer)—Yes
Connectivity & software
Connections—Wi-Fi
Wi-Fi—Yes
Compatible softwareLightBurn—
LightBurn compatibleYes—
Size & power
Width286 mm—
Depth273 mm—
Height190 mm—
Weight2.4 kg—
To compare: 0up to 4 models
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