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- LM3 20W vs SF-A9 20W
Ortur LM3 20W vs Sculpfun SF-A9 20W
What LM3 20W does better (1) and where SF-A9 20W wins (3) — every spec side by side.
Why is LM3 20W better than SF-A9 20W?
- Laser spot size0.08 mm vs 0.1 mm+25%
Why is SF-A9 20W better than LM3 20W?
- Work area (surface)1,420 cm² vs 1,600 cm²+13%
- Flame / fire detectionNo · LM3 20W: Yes
- Work area depth (Y)355 mm vs 400 mm+13%
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 × 355 mm | 400 × 400 mm |
| Work area width (X) | 400 mm | 400 mm |
| Work area depth (Y) | 355 mm | 400 mm |
| Work area (surface) | 1,420 cm² | 1,600 cm² |
| Work-area extension kit | Yes | — |
| Speed & cutting | ||
| Max engraving / travel speed | — | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | — | 20 mm |
| Precision | ||
| Laser spot size | 0.08 mm | 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 |
| Built-in fume filter / purifier | Yes | — |
| Features | ||
| Air assist | Yes | Yes |
| Built-in camera | No | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | Yes |
| Connectivity & software | ||
| Connections | — | USB, Wi-Fi, Bluetooth |
| Wi-Fi | — | Yes |
| USB | — | Yes |
| Bluetooth | — | Yes |
| Compatible software | LightBurn, LaserGRBL | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| Size & power | ||
| Width | — | 606 mm |
| Depth | — | 665 mm |
| Height | — | 110 mm |
| Weight | — | 6.2 kg |
