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- PHECDA 20W vs Ray7S 20W
Elegoo PHECDA 20W vs Longer Ray7S 20W
What PHECDA 20W does better (3) and where Ray7S 20W wins (2) — every spec side by side.
vs
6.4Power & cutting7.7
6.6Speed8.0
8.7Precision8.7
7.7Work area5.3
5.8Safety8.3
6.4Features & ease of use6.9
Why is PHECDA 20W better than Ray7S 20W?
- Work area (surface)1,600 cm² vs 946 cm²+69%
- Work area width (X)400 mm vs 305 mm+31%
- Work area depth (Y)400 mm vs 310 mm+29%
Why is Ray7S 20W better than PHECDA 20W?
- Enclosed (fully covered)No · PHECDA 20W: Yes
- Max engraving / travel speed417 mm/s vs 600 mm/s+44%
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 | — |
| Laser power | ||
| Laser output power | 20 W | 20 W |
| Work area | ||
| Work area | 400 × 400 mm | 305 × 310 mm |
| Work area width (X) | 400 mm | 305 mm |
| Work area depth (Y) | 400 mm | 310 mm |
| Work area (surface) | 1,600 cm² | 946 cm² |
| Speed & cutting | ||
| Max engraving / travel speed | 417 mm/s | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | 8 mm | — |
| Precision | ||
| Laser spot size | 0.06 mm | 0.06 mm |
| Safety | ||
| Enclosed (fully covered) | No | Yes |
| Laser safety class | — | Class 1 (eye-safe, enclosed) |
| Flame / fire detection | No | No |
| Tilt / movement sensor | 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 | — |
| Touchscreen / control panel | Yes | — |
| Offline engraving (no computer) | — | Yes |
| Connectivity & software | ||
| Connections | USB, SD / USB drive | Wi-Fi |
| Wi-Fi | Yes | Yes |
| USB | Yes | — |
| SD / TF card | Yes | — |
| Phone app control | Yes | — |
| Compatible software | LightBurn, LaserGRBL | — |
| LightBurn compatible | Yes | — |
| File formats | SVG, DXF, JPG, PNG, BMP, TIF | — |
| Size & power | ||
| Width | 673 mm | — |
| Depth | 660 mm | — |
| Height | 190 mm | — |
| Weight | 6.5 kg | — |
| Rated power consumption | 55 W | — |
