ComMarker B6 20W Fiber Laser Engraver vs xTool F1 Ultra 20W Fiber Laser Engraver
Head-to-head spec comparison to help you pick the right fiber laser for your needs.
ComMarker
$599
xTool
$1299
Spec-by-Spec Comparison
| Spec | ComMarker B6 20W Fiber Laser Engraver | xTool F1 Ultra 20W Fiber Laser Engraver |
|---|---|---|
| Wattage | 20 W | 20 W |
| Laser Type | Q-Switched | Q-Switched |
| Laser Source | Raycus | Raycus |
| Work Area (W) | 150 mm | 220 mm |
| Work Area (H) | 150 mm | 220 mm |
| Galvo Speed | 8000 mm/s | 10000 mm/s |
| Color Marking | No | No |
| LightBurn | Yes | Yes |
| Autofocus | Yes | Yes |
| Weight | 3.5 kg | 4.5 kg |
| Software | LightBurn + EZCad | xTool Creative Space + LightBurn |
| Pulse Width | N/A (Q-Switched) | N/A (Q-Switched) |
| Price | $599 | $1299 |
| Rating | 8.0/10 | 8.6/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
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
- Autofocus eliminates manual Z-axis setup every session — the only 20W fiber laser with autofocus in the sub-$600 tier; every other machine in this range requires manual focus adjustment
- 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
- Q-switched only — no color marking on stainless steel regardless of settings; for any color on tumblers or jewelry, the minimum step up is the OMTech 30W MOPA at $699
- 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
- Rotary not included — cylindrical tumbler marking requires a separate chuck or roller rotary attachment ($45–$65) on top of machine cost
xTool F1 Ultra 20W Fiber Laser Engraver
Pros
- Best-in-class tumbler engraving results — hobbylasercutters.com called it 'the best result I ever got with tumblers, testing all types of lasers'; the two-pass method (diode removes coating, fiber polishes) with a chuck rotary produces showroom-quality marks
- 16MP built-in camera with AI auto-align — places jobs on multiple randomly-oriented pieces automatically in xTool XCS; a workflow advantage that competing machines requiring manual positioning cannot match
- 220×220mm base work area (expandable to 220×500mm with conveyor) — the largest effective work area of any portable fiber galvo in this tier; 400×400mm in earlier specs was an error
- xTool's US support and warranty service is the most responsive of any Chinese laser brand — English-speaking support with real turnaround times, not 24hr+ WhatsApp queues
- Fully enclosed with automatic safety shutoffs — safe to operate without OD5+ eyewear or a dedicated controlled workspace, unlike every open-frame competitor
Cons
- NOT a MOPA laser — the F1 Ultra is Q-switched fiber galvo; no controllable pulse width, no MOPA-quality vivid color on stainless; xTool explicitly reserves 'MOPA' for the F2 Ultra only
- LightBurn fill-engraving shift bug documented Dec 2024 — after a firmware update, fill layers shift 1cm+ mid-job in LightBurn; xTool XCS performs the same jobs correctly; advanced LightBurn users face workflow disruption
- Camera autofocus and AI auto-align are XCS-only — these signature features do not work in LightBurn; users who prefer LightBurn lose the core differentiating workflow features
- Autofocus calibration drifts over time — xTool support confirms autofocus can deviate over 0.5mm and requires periodic manual recalibration
- Fiber laser power reduction reports in xTool community — multiple threads document 'F1 Ultra fiber laser not firing' or 'drastically reduced power'; may indicate a reliability pattern worth tracking
Our Verdicts
ComMarker B6 20W Fiber Laser Engraver
The ComMarker B6 is the correct 20W pick when work area matters more than color capability. The 150mm field covers tumblers (with a rotary), full knife blades, and medium plaques that would require repositioning on a 110mm machine. Autofocus and the built-in display are genuine workflow upgrades over competitors at this price. If color marking is any part of your future roadmap, skip this machine — the B6 is Q-switched, and adding color capability later means buying a second machine. Buy the OMTech 30W MOPA at $699 instead. For monochrome marking on larger pieces with the most features in this tier, the B6 is the pick.
xTool F1 Ultra 20W Fiber Laser Engraver
The xTool F1 Ultra is the best-supported fiber laser in this price range for buyers who prioritize setup experience and safety over raw wattage or color marking. The enclosed design, 16MP camera, and xTool's responsive English-speaking support are genuinely differentiated. It is not a MOPA — color marking on stainless is limited to Q-switched thermal oxidation, not MOPA-grade vivid results. At $1,299, you're paying more than the ComMarker B4 60W MOPA ($1,099) for 20W vs 60W and no MOPA capability. The premium makes sense for buyers who want the smoothest possible onboarding and the safest enclosed workspace. It does not make sense for buyers optimizing for color marking throughput or raw wattage.