ComMarker B4 20W vs ComMarker B6 30W
| Laser | ||
| Type | Fiber Laser | Fiber Laser |
| Wavelength | 1,064 nm | 1,064 nm |
| Optical Power | 20 W | 30 W |
| Performance | ||
| Work Area | 150 × 150 mm | 150 × 150 mm |
| Max Speed | 600,000 mm/min | 900,000 mm/min |
| Focus | Manual | Autofocus |
| Features | ||
| Enclosure | No | No |
| Air Assist | No | No |
| Rotary Compatible | Yes | Yes |
| WiFi | No | No |
| Camera | No | No |
| Physical | ||
| Approx. Price | $1,399 | $1,999 |
| Release Year | 2022 | 2024 |
| Weight | 11 kg | 13.5 kg |
Pros & Cons
ComMarker B4 20W
What we like
- Compact and portable at only 11 kg
- Affordable entry into professional fiber laser engraving
- Available in 20W/30W/50W/100W variants
- Works with EzCad2 and LightBurn
- Strong community and accessory ecosystem
Watch out for
- No autofocus (manual or separate motorized lift table)
- Standard 110×110mm work area is small (optional lens required for 200×200mm)
- USB-only connectivity (no Wi-Fi)
- No built-in enclosure or camera
ComMarker B6 30W
What we like
- Deep engraving capability beyond 20W
- Cuts metal sheet up to 0.5mm in multiple passes
- Same autofocus and SpeedMax™ galvo as B6 20W
- LightBurn and EzCad2 compatible
- Compact at 13.5 kg
Watch out for
- Premium price vs B4 with similar work area
- USB-only (no Wi-Fi)
- No built-in enclosure
- Fiber laser only — cannot engrave clear materials or wood as cleanly as CO2/diode
Compatible Materials
ComMarker B4 20W
steelaluminumbrasscopperAnodized AluminumtitaniumgoldsilverLeathercoated metals
ComMarker B6 30W
steelaluminumbrasscopperAnodized AluminumtitaniumgoldsilverLeathercoated metals
The ComMarker B4 20W costs $1,399 (30% less) than the ComMarker B6 30W, which is priced at $1,999.
The ComMarker B6 30W has 33% more optical power (30W vs 20W).
Both machines share the same work area of 150 × 150 mm.
The ComMarker B6 30W has a 33% higher maximum speed (900,000 mm/min vs 600,000 mm/min).