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  3. SM 30W vs A20 Pro 20W

Acmer SM 30W vs AtomStack A20 Pro 20W

What SM 30W does better (3) and where A20 Pro 20W wins (3) — every spec side by side.

Acmer SM 30W
Acmer · 2025SM 30W
4.3Score
3 advantages≈ US$1,800
vs
AtomStack A20 Pro 20W
AtomStack · 2024A20 Pro 20W
4.4Score
3 advantages≈ US$890
Higher score
4.0Power & cutting2.7
4.9Speed2.1
5.1Work area9.6
4.7Safety7.3
5.6Features & ease of use2.5

Why is SM 30W better than A20 Pro 20W?

  1. Max engraving / travel speed10,000 mm/s vs 400 mm/s25×
  2. Laser output power30 W vs 20 W+50%
  3. Autofocus / auto heightYes · A20 Pro 20W: No

Why is A20 Pro 20W better than SM 30W?

  1. Work area (surface)225 cm² vs 1,600 cm²7.1×
  2. Work area width (X)150 mm vs 400 mm2.7×
  3. Work area depth (Y)150 mm vs 400 mm2.7×
Specifications

Side by side

Acmer SM 30WAcmer SM 30W≈ US$1,8004.3
AtomStack A20 Pro 20WAtomStack A20 Pro 20W≈ US$8904.4
General
Laser sourcesFibre (1064 nm)Fibre (1064 nm)
Motion systemGalvo (scanning mirrors)Galvo (scanning mirrors)
Two laser sourcesNoNo
MOPA fibre source (adjustable pulse)Yes—
Wavelength1,064 nm1,064 nm
Laser power
Laser output power30 W20 W
Work area
Work area150 × 150 mm400 × 400 mm
Work area width (X)150 mm400 mm
Work area depth (Y)150 mm400 mm
Work area (surface)225 cm²1,600 cm²
Speed & cutting
Max engraving / travel speed10,000 mm/s400 mm/s
Precision
Laser spot size—0.06 mm
Positioning accuracy—0.01 mm
Linear rails—Yes
Safety
Enclosed (fully covered)NoNo
Tilt / movement sensor—Yes
Features
Built-in cameraNoNo
Autofocus / auto heightYesNo
Rotary attachment supportYes—
Connectivity & software
Connections—USB
USB—Yes
Compatible softwareLightBurnLightBurn, AtomStack Studio
LightBurn compatibleYesYes

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