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- PHECDA 20W vs SF-A9 20W
Elegoo PHECDA 20W vs Sculpfun SF-A9 20W
What PHECDA 20W does better (1) and where SF-A9 20W wins (4) — every spec side by side.
vs
6.4Power & cutting8.1
6.6Speed8.0
8.7Precision5.0
7.7Work area7.7
5.8Safety7.1
6.4Features & ease of use7.4
Dimensions
Size comparison
PHECDA 20WSF-A9 20W
| PHECDA 20W | SF-A9 20W | Difference | |
|---|---|---|---|
| Height | 190 mm | 110 mm | +80 mm |
| Width | 673 mm | 606 mm | +67 mm |
| Depth | 660 mm | 665 mm | −5 mm |
| Weight | 6.5 kg | 6.2 kg | +0.3 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is PHECDA 20W better than SF-A9 20W?
- Laser spot size0.06 mm vs 0.1 mm+67%
Why is SF-A9 20W better than PHECDA 20W?
- Max cutting depth – wood / plywood (one pass)8 mm vs 20 mm2.5×
- Max engraving / travel speed417 mm/s vs 600 mm/s+44%
- Flame / fire detectionNo · PHECDA 20W: Yes
- Weight6.5 kg vs 6.2 kg+5%
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 | 455 nm | 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 |
| Speed & cutting | ||
| Max engraving / travel speed | 417 mm/s | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | 8 mm | 20 mm |
| Precision | ||
| Laser spot size | 0.06 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 | Yes |
| Built-in fume filter / purifier | Yes | — |
| Exhaust fan | Yes | — |
| Features | ||
| Air assist | Yes | Yes |
| Built-in camera | No | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | Yes |
| Touchscreen / control panel | Yes | — |
| Connectivity & software | ||
| Connections | USB, SD / USB drive | USB, Wi-Fi, Bluetooth |
| Wi-Fi | Yes | Yes |
| USB | Yes | Yes |
| Bluetooth | — | Yes |
| SD / TF card | Yes | — |
| Phone app control | Yes | — |
| Compatible software | LightBurn, LaserGRBL | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| File formats | SVG, DXF, JPG, PNG, BMP, TIF | — |
| Size & power | ||
| Width | 673 mm | 606 mm |
| Depth | 660 mm | 665 mm |
| Height | 190 mm | 110 mm |
| Weight | 6.5 kg | 6.2 kg |
| Rated power consumption | 55 W | — |
