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- LE-4040 Pro 20W vs SF-A9 20W
FoxAlien LE-4040 Pro 20W vs Sculpfun SF-A9 20W
What LE-4040 Pro 20W does better (0) and where SF-A9 20W wins (3) — every spec side by side.
vs
7.7Power & cutting8.1
2.5Precision5.0
6.7Work area7.7
3.2Safety7.1
2.7Features & ease of use7.4
Dimensions
Size comparison
LE-4040 Pro 20WSF-A9 20W
| LE-4040 Pro 20W | SF-A9 20W | Difference | |
|---|---|---|---|
| Height | 230 mm | 110 mm | +120 mm |
| Width | 640 mm | 606 mm | +34 mm |
| Depth | 580 mm | 665 mm | −85 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is LE-4040 Pro 20W better than SF-A9 20W?
LE-4040 Pro 20W has no measurable advantages in this pair.
Why is SF-A9 20W better than LE-4040 Pro 20W?
- Air assistNo · LE-4040 Pro 20W: Yes
- Flame / fire detectionNo · LE-4040 Pro 20W: Yes
- Wi-FiNo · LE-4040 Pro 20W: Yes
Specifications
Side by side
| General | ||
| Laser sources | Blue diode (≈455 nm) | Blue diode (≈455 nm) |
| Motion system | Gantry (XY rails) | Gantry (XY rails) |
| Two laser sources | No | No |
| Wavelength | — | 450 nm |
| Laser power | ||
| Laser output power | 20 W | 20 W |
| Work area | ||
| Work area | 400 × 400 mm | 400 × 400 mm |
| Work area width (X) | 400 mm | 400 mm |
| Work area depth (Y) | 400 mm | 400 mm |
| Work area (surface) | 1,600 cm² | 1,600 cm² |
| Max workpiece height | 30 mm | — |
| Speed & cutting | ||
| Max engraving / travel speed | — | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | — | 20 mm |
| Precision | ||
| Laser spot size | — | 0.1 mm |
| Positioning accuracy | 0.1 mm | — |
| Linear rails | — | Yes |
| Safety | ||
| Enclosed (fully covered) | No | No |
| Flame / fire detection | No | Yes |
| Emergency stop button | — | Yes |
| Tilt / movement sensor | — | Yes |
| Features | ||
| Air assist | No | Yes |
| Built-in camera | No | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | Yes |
| Connectivity & software | ||
| Connections | USB | USB, Wi-Fi, Bluetooth |
| Wi-Fi | No | Yes |
| USB | Yes | Yes |
| Bluetooth | — | Yes |
| Compatible software | LightBurn, LaserGRBL, Candle | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| Size & power | ||
| Width | 640 mm | 606 mm |
| Depth | 580 mm | 665 mm |
| Height | 230 mm | 110 mm |
| Weight | — | 6.2 kg |
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