21 Oct 2026Laser & CNC machines 406Brands 30Comparisons 1,268
PROCESSINGTALKlaser cutters, engravers & CNC routers
TrendingASCARVA 3S ▲GPro Vision Split MOPA 60W ▲Master 50W ▲S2 Pro 36WPM 60WPRONAX ForgeHydra 9 Gen2 38WSwiftSolis Duo 20W
  1. Processing Talk
  2. Compare
  3. L8 20W vs SF-A9 20W

Genmitsu L8 20W vs Sculpfun SF-A9 20W

What L8 20W does better (3) and where SF-A9 20W wins (2) — every spec side by side.

Genmitsu L8 20W
Genmitsu · 2023L8 20W
9.1Score
3 advantages≈ US$660
Higher score
vs
Sculpfun SF-A9 20W
Sculpfun · 2023SF-A9 20W
8.4Score
2 advantages≈ US$500
7.7Power & cutting8.1
8.9Speed8.0
4.8Precision5.0
7.7Work area7.7
8.3Safety7.1
9.1Features & ease of use7.4
Dimensions

Size comparison

L8 20WSF-A9 20W
715 × 261621606 × 110665
L8 20WSF-A9 20WDifference
Height261 mm110 mm+151 mm
Width715 mm606 mm+109 mm
Depth621 mm665 mm−44 mm

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

Why is L8 20W better than SF-A9 20W?

  1. Enclosed (fully covered)Yes · SF-A9 20W: No
  2. Built-in cameraYes · SF-A9 20W: No
  3. Max engraving / travel speed667 mm/s vs 600 mm/s+11%

Why is SF-A9 20W better than L8 20W?

  1. Laser spot size0.13 mm vs 0.1 mm+30%
  2. Flame / fire detectionNo · L8 20W: Yes
Specifications

Side by side

Genmitsu L8 20WGenmitsu L8 20W≈ US$6609.1
Sculpfun SF-A9 20WSculpfun SF-A9 20W≈ US$5008.4
General
Laser sourcesBlue diode (≈455 nm)Blue diode (≈455 nm)
Motion systemGantry (XY rails)Gantry (XY rails)
Two laser sourcesNoNo
Wavelength455 nm450 nm
Laser power
Laser output power20 W20 W
Work area
Work area400 × 400 mm400 × 400 mm
Work area width (X)400 mm400 mm
Work area depth (Y)400 mm400 mm
Work area (surface)1,600 cm²1,600 cm²
Speed & cutting
Max engraving / travel speed667 mm/s600 mm/s
Max cutting depth – wood / plywood (one pass)—20 mm
Precision
Laser spot size0.13 mm0.1 mm
Positioning accuracy0.01 mm—
Linear rails—Yes
Safety
Enclosed (fully covered)YesNo
Laser safety classClass 1 (eye-safe, enclosed)—
Flame / fire detectionNoYes
Emergency stop button—Yes
Tilt / movement sensor—Yes
Features
Air assistYesYes
Built-in cameraYesNo
Autofocus / auto heightNoNo
Rotary attachment supportYesYes
Connectivity & software
ConnectionsWi-FiUSB, Wi-Fi, Bluetooth
Wi-FiYesYes
USBYesYes
Bluetooth—Yes
Compatible softwareLightBurnLightBurn, LaserGRBL
LightBurn compatibleYesYes
File formatsJPG, BMP, PNG, GIF, DXF, PLT, HPGL—
Size & power
Width715 mm606 mm
Depth621 mm665 mm
Height261 mm110 mm
Weight—6.2 kg
Rated power consumption240 W—
To compare: 0up to 4 models
Compare