Gweike G2 20W Fiber vs ComMarker B4 20W
Spec-by-spec breakdown of the Gweike G2 20W Fiber and the ComMarker B4 20W: scores, pricing, cutting performance, software, and what each machine is really best at.
7.8
Gweike G2 20W FiberGweike · Fiber
Gweike G2 packages a 20W fiber galvo in a desktop form factor. Solid option if you want metal marking with Gweike ecosystem familiarity from their CO₂ lines.
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8.5
ComMarker B4 20WComMarker · Fiber
The ComMarker B4 is a popular entry-level fiber galvo engraver for jewelry, tools, and metal gifts. Marks stainless, aluminum, and brass without spray. Small marking field: not a cutter for wood or acrylic.
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Gweike G2 20W Fiber
1 spec wins
Gweike G2 20W Fiber wins on
ComMarker B4 20W
6 spec wins
ComMarker B4 20W wins on
Overall, the ComMarker B4 20W takes it: 8.5 vs 7.8 in our scoring.
| Spec | Gweike G2 20W Fiber | ComMarker B4 20W |
|---|---|---|
| Overview | ||
| Brand | Gweike | ComMarker |
| Laser type | Fiber | Fiber |
| Main focus | Best for marking, logos, and detail work | Best for marking, logos, and detail work |
| Main objective | Entry fiber marking on small metal parts | Affordable fiber marking for metal personalization and small business |
| Best for |
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| Scores | ||
| Score | 7.8 | Best8.5 |
| Value score | 8.7 | Best8.9 |
| Ease of use | 8.2 | Best8.4 |
| Capability | 7.0 | Best8.4 |
| Build quality | 8.2 | Best8.3 |
| Pricing | ||
| Price | $1,499 – $2,199 1.379 € – 2.023 € | Best $1,299 – $1,899 1.195 € – 1.747 € |
| Hardware | ||
| Power | 20W fiber | 20W fiber |
| Work area | 110 × 110 mm | 110 × 110 mm typical marking area |
| Precision | 0.01 mm | 0.01 mm |
| Real-world performance | ||
| Sample engrave | Filled logo on stainless steel plate ~4–9 min · 10 × 10 cm (4 × 4 in) | Filled logo on stainless steel plate ~2–5 min · 10 × 10 cm (4 × 4 in) |
| Sample cut | Laser cutting Not a cutter | Laser cutting Not a cutter |
| Spot size | ~0.02 mm spot | ~0.02 mm fiber spot |
| Max speed | 7,000 mm/s | 7,000 mm/s |
| Materials | ||
| Engraves |
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| Cuts | Best
| — |
| Cannot do |
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| Software & connectivity | ||
| Software | EZCAD, LightBurn | ComMarker, LightBurn, EZCAD |
| Connectivity | USB | USB, Ethernet |
| Verdict | ||
| TL;DR | Gweike G2 packages a 20W fiber galvo in a desktop form factor. Solid option if you want metal marking with Gweike ecosystem familiarity from their CO₂ lines. | The ComMarker B4 is a popular entry-level fiber galvo engraver for jewelry, tools, and metal gifts. Marks stainless, aluminum, and brass without spray. Small marking field: not a cutter for wood or acrylic. |
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| Cons |
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“Best” highlights the strongest spec on paper for that row only — not an overall buying recommendation.
Frequently asked questions
Which is better: Gweike G2 20W Fiber or ComMarker B4 20W?
In our scoring, the ComMarker B4 20W comes out ahead with 8.5/10 overall versus 7.8/10 for the Gweike G2 20W Fiber. The detailed table above shows exactly where each machine wins.
Which is cheaper: Gweike G2 20W Fiber or ComMarker B4 20W?
The ComMarker B4 20W is the more affordable option, starting around $1,299, versus $1,499 for the Gweike G2 20W Fiber.
Which is better for a beginner: Gweike G2 20W Fiber or ComMarker B4 20W?
The ComMarker B4 20W is the easier machine to start with: it scores 8.4/10 for ease of use, versus 8.2/10 for the Gweike G2 20W Fiber.
What is the main difference between the Gweike G2 20W Fiber and the ComMarker B4 20W?
The Gweike G2 20W Fiber is a Fiber laser geared toward engraving, while the ComMarker B4 20W is a Fiber laser geared toward engraving. That difference drives most of the gaps you see in the comparison table.