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  3. S2 Pro 36W vs Alpha MK2 20W

Acmer S2 Pro 36W vs Algolaser Alpha MK2 20W

What S2 Pro 36W does better (2) and where Alpha MK2 20W wins (4) — every spec side by side.

Acmer S2 Pro 36W
Acmer · 2025S2 Pro 36W
7.6Score
2 advantages≈ US$580
Higher score
vs
Algolaser Alpha MK2 20W
Algolaser · 2024Alpha MK2 20W
7.4Score
4 advantages≈ US$600
8.6Power & cutting7.7
6.1Speed6.9
5.0Precision2.8
7.7Work area8.2
3.2Safety4.9
5.7Features & ease of use8.7

Why is S2 Pro 36W better than Alpha MK2 20W?

  1. Laser output power36 W vs 20 W+80%
  2. Laser spot size0.1 mm vs 0.16 mm+60%

Why is Alpha MK2 20W better than S2 Pro 36W?

  1. Built-in cameraNo · S2 Pro 36W: Yes
  2. Max engraving / travel speed400 mm/s vs 500 mm/s+25%
  3. Work area (surface)1,600 cm² vs 1,640 cm²+2%
  4. Work area depth (Y)400 mm vs 410 mm+2%
Specifications

Side by side

Acmer S2 Pro 36WAcmer S2 Pro 36W≈ US$5807.6
General
Laser sourcesBlue diode (≈455 nm)Blue diode (≈455 nm)
Motion systemGantry (XY rails)Gantry (XY rails)
Two laser sourcesNoNo
Wavelength—450 nm
Laser power
Laser output power36 W20 W
Work area
Work area400 × 400 mm400 × 410 mm
Work area width (X)400 mm400 mm
Work area depth (Y)400 mm410 mm
Work area (surface)1,600 cm²1,640 cm²
Work-area extension kit—Yes
Speed & cutting
Max engraving / travel speed400 mm/s500 mm/s
Precision
Laser spot size0.1 mm0.16 mm
Linear railsYes—
Safety
Enclosed (fully covered)NoNo
Flame / fire detectionNoNo
Built-in fume filter / purifier—Yes
Features
Air assistYesYes
Built-in cameraNoYes
Autofocus / auto heightNoNo
Rotary attachment supportYesYes
Connectivity & software
Compatible softwareLightBurnLightBurn, LaserGRBL
LightBurn compatibleYesYes
Size & power
Width—650 mm
Depth—730 mm
Height—240 mm
Weight—6.5 kg
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