ComMarker B4 60W JPT MOPA Fiber Laser vs GWEIKE G2 Pro 30W Fiber Laser Engraver
Head-to-head spec comparison to help you pick the right fiber laser for your needs.
ComMarker
$3,699
GWEIKE
$1,799
Spec-by-Spec Comparison
| Spec | ComMarker B4 60W JPT MOPA Fiber Laser | GWEIKE G2 Pro 30W Fiber Laser Engraver |
|---|---|---|
| Wattage | 60 W | 30 W |
| Laser Type | MOPA | Q-Switched |
| Laser Source | JPT | Raycus |
| Work Area (W) | 175 mm | 150 mm |
| Work Area (H) | 175 mm | 150 mm |
| Galvo Speed | 10000 mm/s | 15000 mm/s |
| Color Marking | Yes | Yes |
| LightBurn | Yes | Yes |
| Autofocus | No | No |
| Weight | 5.5 kg | 6.5 kg |
| Software | LightBurn + EZCad2 (LightBurn requires COR file setup) | LightBurn + EZCad2 |
| Pulse Width | 2–500ns | N/A (Q-Switched, 20–200kHz frequency range) |
| Price | $3,699 | $1,799 |
| Rating | 9.0/10 | 8.3/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
ComMarker B4 60W JPT MOPA Fiber Laser
Pros
- JPT M7 MOPA source confirmed — wider frequency range (1–4,000kHz) and tighter pulse consistency than Raycus Q-switched alternatives at any price; the datasheet comes in the box
- The catalog combines 60W MOPA and a 10,000mm/s speed claim; production throughput still depends on material, settings, field, and workflow
- LightBurn compatible via COR file — both LightBurn and EZCad2 workflows supported; JPT M7's full pulse-width parameter range is accessible from LightBurn's galvo interface once configured
- Rust cleaning at 60W is a documented bonus capability — removes surface oxide from steel without abrasives, useful as pre-treatment before color marking on weathered material
- Foot pedal input, job preview function, and fan that only runs during active engraving — the small-business production workflow details that distinguish a tool from a toy
Cons
- LightBurn setup requires loading a COR file and manually configuring galvo axis, Q-Pulse Width, and frequency settings — LightBurn forum (April 2026) shows new owners needing 30+ minutes before getting first correct results; not auto-detected
- No autofocus — manual Z-axis focus required for every workpiece height change; the B6 MOPA, ComMarker's current flagship, corrects this limitation
- B4 MOPA line is end-of-life inventory — ComMarker now promotes the B6 MOPA (autofocus, updated form factor, same 60W power); ASIN B0CGX9TBGQ remains on Amazon but community resources will increasingly reference the B6 going forward
- Color marking requires calibration per material batch — powder coat thickness and alloy composition vary even within the same tumbler brand, requiring fresh test grids for each new batch
- No enclosure — Class 4 open-beam 1064nm infrared; requires OD6+ eyewear at 60W and either ComMarker's Safety Enclosure Pro or a dedicated controlled workspace
GWEIKE G2 Pro 30W Fiber Laser Engraver
Pros
- The current title carries a 15,000mm/s speed claim; compare real-job evidence and controller settings before inferring production throughput
- Wide 20–200kHz frequency range enables thermal oxidation color on stainless steel and titanium — GWEIKE documents '90+ colorful engravings' and DIY Life reviewer confirmed distinct greens and reds on stainless (Nov 2024)
- GWEIKE's LightBurn driver is the most actively maintained of any Chinese fiber laser brand — no COR file gymnastics, no galvo axis swap workarounds; direct native LightBurn galvo support out of box
- 150×150mm work area handles most knife blades, tumblers with rotary, and medium plaques without repositioning
- Active LightBurn settings ecosystem with documented community resources: a dedicated Etsy seller offers a 37-material LightBurn library specific to the G2 Pro 30W covering metals, plastics, and stone
Cons
- Color marking is thermal oxidation, not MOPA — results require experimentation per material and are less consistent and repeatable than a JPT MOPA machine; do not expect plug-and-play stainless color
- Focus height calibration is measured from lens center, not machine frame — GWEIKE's manual doesn't clarify this; every new owner mis-sets focus initially and must recalibrate by sound and burn quality (LightBurn forum, Feb 2026)
- Customer service is WhatsApp-only with inconsistent quality — best-lasercutter.com rates it 'a gamble'; not viable for production-critical environments with tight turnaround requirements
- The built-in fan is not a substitute for a verified fume-control plan appropriate to the marked material and workspace
- Native G-Laser software is frustrating and feature-poor — nearly all users switch immediately to LightBurn; do not evaluate the machine on G-Laser
Our Verdicts
ComMarker B4 60W JPT MOPA Fiber Laser
The ComMarker B4 60W MOPA remains the highest-rated configuration in this catalog for buyers who value 60W JPT MOPA capability and can work within its field size. The verified Amazon offer was $3,699 with limited stock on July 10, 2026, not under $1,100. Confirm the exact lens bundle, controller, seller terms, price, and stock before treating it as the right production purchase.
GWEIKE G2 Pro 30W Fiber Laser Engraver
The GWEIKE G2 Pro is a fast Q-switched option with a 150mm field and an extended frequency range. The verified Amazon offer was $1,799 on July 10, 2026, so the old under-$900 comparison is invalid. Buyers focused on repeatable MOPA workflows should compare available true-MOPA configurations rather than the currently unavailable OMTech ASIN referenced in older copy.
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