ComMarker B4 30W Fiber Laser Engraver vs GWEIKE G2 20W Fiber Laser Engraver
Head-to-head spec comparison to help you pick the right fiber laser for your needs.
ComMarker
$1,799
GWEIKE
$1,299
Verdict
It's a Tie
The ComMarker B4 30W Fiber Laser Engraver and GWEIKE G2 20W Fiber Laser Engraver are evenly matched — your choice depends on which features matter most to you.
Spec-by-Spec Comparison
| Spec | ComMarker B4 30W Fiber Laser Engraver | GWEIKE G2 20W Fiber Laser Engraver |
|---|---|---|
| Wattage | 30 W | 20 W |
| Laser Type | Q-Switched | Q-Switched |
| Laser Source | Raycus | Raycus |
| Work Area (W) | 110 mm | 110 mm |
| Work Area (H) | 110 mm | 110 mm |
| Galvo Speed | 10000 mm/s | 15000 mm/s |
| Color Marking | No | No |
| LightBurn | Yes | Yes |
| Autofocus | No | No |
| Weight | 4.2 kg | 2.5 kg |
| Software | LightBurn + EZCad2 (LightBurn Galvo license required separately) | LightBurn + EZCad2 |
| Pulse Width | N/A (Q-Switched) | N/A (Q-Switched) |
| Price | $1,799 | $1,299 |
| Rating | 8.2/10 | 7.8/10 |
| 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
GWEIKE G2 20W Fiber Laser Engraver
Pros
- LightBurn workflow support is documented in the broader review evidence; confirm the current controller and license requirements with the seller
- The listing title carries a 15,000mm/s speed claim, but buyers should compare real-job evidence rather than infer throughput from catalog speed alone
- Raycus 20W source with documented reliability in knife-marking communities — a dedicated Italian cutlery review site (coltellimania.com, 14k views) independently validated the G2 for blade work
- 110×110mm work area covers rings, blade sections, small plaques, and coin marking without repositioning or compromising mark quality
- Active settings ecosystem: YouTube tutorials, LightBurn forum threads, and community settings libraries are indexed for the G2 specifically — problems you hit have been solved publicly
Cons
- Power-loss mid-job defect documented on LightBurn forum (June 2025) — mid-engraving power drop reported on some units; a workaround exists in settings but not every owner encounters it
- Customer service is WhatsApp-only with slow US response times — if something goes wrong, you are on your own until business hours in China; not viable for production-critical downtime
- Focus height calibration is poorly documented — community consensus is to calibrate by burn quality and sound rather than ruler measurement; GWEIKE's manual understates this complexity
- 110×110mm work area rules out tumblers and anything wider than a palm — if typical work pieces are over 100mm, step up to the ComMarker B6 (150mm field)
- No color marking — Q-switched laser cannot produce oxidation colors on stainless steel regardless of settings
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.
GWEIKE G2 20W Fiber Laser Engraver
The GWEIKE G2 20W is the stronger 20W option for a buyer who prioritizes LightBurn continuity and public setup resources. Its 110mm field still limits larger work. The verified Amazon offer was $1,299 on July 10, 2026, so the old $499 value comparison is no longer a valid reason to buy. Compare its exact current configuration and support terms with the similarly priced Monport 20W before checkout.
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