ComMarker B4 30W Fiber Laser Engraver vs ComMarker B6 20W Fiber Laser Engraver
Head-to-head spec comparison to help you pick the right fiber laser for your needs.
ComMarker
$1,799
ComMarker
$1,599
Spec-by-Spec Comparison
| Spec | ComMarker B4 30W Fiber Laser Engraver | ComMarker B6 20W Fiber Laser Engraver |
|---|---|---|
| Wattage | 30 W | 20 W |
| Laser Type | Q-Switched | Q-Switched |
| Laser Source | Raycus | Raycus |
| Work Area (W) | 110 mm | 150 mm |
| Work Area (H) | 110 mm | 150 mm |
| Galvo Speed | 10000 mm/s | 8000 mm/s |
| Color Marking | No | No |
| LightBurn | Yes | Yes |
| Autofocus | No | Yes |
| Weight | 4.2 kg | 3.5 kg |
| Software | LightBurn + EZCad2 (LightBurn Galvo license required separately) | LightBurn + EZCad |
| Pulse Width | N/A (Q-Switched) | N/A (Q-Switched) |
| Price | $1,799 | $1,599 |
| Rating | 8.2/10 | 8.0/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
ComMarker B4 30W Fiber Laser Engraver
Pros
- The broader product evidence describes 110mm and 200mm lens options; verify which lenses are included in the exact current ASIN bundle
- Motorized electric Z-axis lifting reduces manual focus adjustment; verify the current controller and lift configuration with the seller
- LightBurn compatible with EZCad2 also included — both workflows supported; owners report LightBurn produces dramatically better deep engraving results than EZCad2 on this machine
- Deep engraving on aluminum, brass, steel, precious metals, and stone confirmed across multiple owner channels — 30W Raycus output handles production-depth marking reliably
- Handheld mode via detachable design — for large pieces or on-site marking that won't fit on the desktop platform, this is a workflow no other machine in this tier offers
Cons
- Q-switched only — no color marking on stainless steel; if color is needed, the separate B4 30W MOPA (ASIN B0DRY12JMW) has the JPT MOPA source; both use the B4 body but they are different machines
- LightBurn may require a separate Galvo license; confirm controller compatibility and licensing before checkout
- Initial LightBurn setup requires loading a markcfg7 config file and calibrating corfile field size for whichever lens is mounted — LightBurn forum threads show first-time owners spending hours on initial configuration
- No color marking — reinforcing the most important caveat: despite 'B4' appearing in ComMarker's MOPA lineup branding, this specific ASIN is the Raycus Q-switch variant; verify the ASIN if color marking is needed
- Customer support response is 24hr+ with documented language barriers — not viable for time-sensitive production downtime per LightBurn forum users
ComMarker B6 20W Fiber Laser Engraver
Pros
- 150×150mm work area — 35% larger than the GWEIKE G2's 110mm field — fits tumblers on a rotary chuck and full knife blades without repositioning
- The current title identifies an autofocus screen, a meaningful workflow distinction from manual-focus 20W alternatives
- LightBurn confirmed working with EZCad also included — both workflows supported; buyers coming from diode lasers have immediate LightBurn continuity
- Built-in touchscreen display for settings and job status — removes the need to monitor a laptop during production runs
- 20W Raycus Q-switched marks steel, aluminum, brass, titanium, and copper consistently — ComMarker's production volume means quality control is verified across thousands of units
Cons
- Cataloged as Q-switched rather than MOPA; compare a currently available MOPA configuration when pulse-width control is required
- No enclosure — Class 4 open-beam fiber laser; the invisible 1064nm infrared beam requires OD5+ eyewear and either a dedicated enclosure or a controlled workspace with no reflective surfaces
- Thinner community than GWEIKE — fewer Reddit threads and YouTube settings tutorials; troubleshooting depends more on ComMarker support channels than community knowledge
- The current title does not confirm an included rotary; verify the exact bundle before planning cylindrical work
Our Verdicts
ComMarker B4 30W Fiber Laser Engraver
The ComMarker B4 30W is a Q-switched option for buyers prioritizing metal-marking speed and the included lens choices over MOPA pulse control. The verified Amazon offer was $1,799 on July 10, 2026. The OMTech ASIN referenced in older comparisons was out of stock, so compare this machine only with currently available, exact configurations.
ComMarker B6 20W Fiber Laser Engraver
The ComMarker B6 is the 20W option to compare when a 150mm field and autofocus matter more than MOPA pulse control. The verified Amazon offer was $1,599 on July 10, 2026. That price removes it from any under-$600 decision path. If color work is required, compare an available MOPA configuration instead of following the currently unavailable OMTech 30W exit.
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