- Processing Talk
- Compare
- S2 7W vs B1 20W
Acmer S2 7W vs Longer B1 20W
What S2 7W does better (2) and where B1 20W wins (5) — every spec side by side.
Why is S2 7W better than B1 20W?
- Laser spot size0.06 mm vs 0.1 mm+67%
- Air assistYes · B1 20W: No
Why is B1 20W better than S2 7W?
- Laser output power7 W vs 20 W2.9×
- Work area (surface)900 cm² vs 1,980 cm²2.2×
- Max engraving / travel speed167 mm/s vs 600 mm/s3.6×
- Work area width (X)300 mm vs 450 mm+50%
- Work area depth (Y)300 mm vs 440 mm+47%
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 |
| Laser power | ||
| Laser output power | 7 W | 20 W |
| Work area | ||
| Work area | 300 × 300 mm | 450 × 440 mm |
| Work area width (X) | 300 mm | 450 mm |
| Work area depth (Y) | 300 mm | 440 mm |
| Work area (surface) | 900 cm² | 1,980 cm² |
| Work-area extension kit | — | Yes |
| Speed & cutting | ||
| Max engraving / travel speed | 167 mm/s | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | — | 25 mm |
| Precision | ||
| Laser spot size | 0.06 mm | 0.1 mm |
| Safety | ||
| Enclosed (fully covered) | No | No |
| Flame / fire detection | No | No |
| Features | ||
| Air assist | Yes | No |
| 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 |
| Wi-Fi | — | No |
| USB | — | Yes |
| SD / TF card | — | Yes |
| Phone app control | — | Yes |
| Compatible software | LightBurn | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| Size & power | ||
| Width | 490 mm | — |
| Depth | 500 mm | — |
| Height | 195 mm | — |
