The Most Capable Compact MOPA Fiber Laser Engraver ComMarker Has Ever Made.
The ComMarker B6 JPT MOPA packs a 60W JPT M7 MOPA laser source, one-touch electric autofocus, and 15,000 mm/s engraving speed into a machine that weighs just 13kg and sits on a desktop.
Whether you're producing color-marked stainless steel jewelry, engraving anodized aluminum tumblers, marking industrial components for traceability, or cutting thin metal sheet — this is the machine that does all of it without requiring a dedicated space or professional installation.
Compatible Materials:
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Metal
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Plastics
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Stone
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Leather
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Rubber
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Why MOPA Changes Everything About Fiber Laser Engraving
Standard Q-switched fiber lasers are single-mode tools — fast black marking on metal, nothing else. The moment you need color, clean anodized aluminum, or sensitive plastic marking, a standard fiber laser falls short.
MOPA (Master Oscillator Power Amplifier) gives you independent control over pulse width (1–500 ns) and frequency (1–4,000 kHz) — two parameters that Q-switched lasers cannot adjust. That adjustability is what unlocks the capabilities that define the B6 MOPA:
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Full color spectrum on stainless steel and titanium — golds, blues, reds, purples, and greens, repeatable once parameters are set
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Clean black marking on anodized aluminum — without the micro-cracking that standard fiber lasers cause at high frequency
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Sensitive plastic marking — marking ABS, PC, and PLA without burning or melting, at higher accuracy than a standard fiber
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Deep engraving and thin metal cutting — the 60W output handles both with controlled parameter adjustment
The MOPA laser enables better engraving results over some plastics and metals compared to Q-switched or standard fiber laser technology — particularly for color marking on stainless steel and titanium, and for clean marking on plastic without discoloration.
One-Touch Autofocus: The Feature That Makes This Machine Easy
The most common frustration with desktop fiber lasers is focusing. Most machines require manual Z-axis adjustment, a red dot calibration procedure, and test burns to confirm the focal point — a time-cost that compounds across every material change throughout the day.
The B6 projects a red dot on the surface, and a sensor measures where that dot is located. The machine calculates the focus distance using that information and adjusts automatically. At first the machine quickly moves to approximate height, then trims the distance in small steps for high precision.
The autofocus system works very reliably and makes focusing a completely hassle-free experience. Press the focus button on the touchscreen, watch the electric Z-axis set itself, and start engraving. Switching between a flat metal business card and a thick ring on the rotary takes seconds — not minutes.
The touchscreen interface gives you direct access to focus control, parameter presets, and job management without needing a computer connected for basic operation.
60W. 15,000 mm/s. In a 13kg Machine.
The B6 uses a 60W JPT M7 laser source with a 15,000 mm/s engraving speed — the full MOPA performance in a compact body at only 13kg.
At 13kg, the B6 MOPA is genuinely portable — carry it between workstations, take it to a market event, store it in a cabinet when not in use. The 2-in-1 desktop and portable design means it functions equally well as a permanent desktop machine or as a unit you set up and break down as needed.
The 150mm × 150mm native working area covers the majority of jewelry, small gift, and component marking work directly. For larger coverage, additional field lenses (70×70mm through 300×300mm) are available as accessories. The autofocus function works with field lenses from 70mm through 200mm — for lenses outside that range, the electric lift still operates manually.
Continuous operation: The machine is rated for 24-hour continuous operation, with a laser source lifespan of over 100,000 hours.
Materials: Everything Metal and Beyond
The B6 MOPA handles the full range of metals and many non-metals:
Metals (direct marking and engraving): Stainless steel, aluminum, anodized aluminum, gold, silver, platinum, titanium, brass, copper, tungsten, carbide, carbon steel, nickel, chrome, iron — with color marking available on stainless and titanium
Plastics (clean marking without melting): ABS, PC, PLA, silicon, PBT, and other common engineering plastics — the MOPA's adjustable pulse width prevents the thermal damage that standard fiber lasers cause on sensitive plastic surfaces
Thin metal cutting: The 60W B6 MOPA can cut 1–1.2mm stainless steel, aluminum, brass, silver, and gold — useful for precise trim cuts, hole piercing, and tag cutting in jewelry production.
The machine is not designed for wood, leather, acrylic, or other organic materials — those require a CO₂ or UV laser. For mixed-material shops, the B6 MOPA handles the metal work; a CO₂ or UV laser handles the rest.
Rotary Engraving Included and Ready
A rotary drive is included in the package — no additional purchase required to start engraving cylindrical items. Rings, bracelets, pens, tumblers, and other round objects mount on the rotary axis for circumferential engraving.
For more complex rotary work, the optional ComMarker R5 Multi-Functional Rotary handles spheres, cones, and irregular shapes in addition to standard cylinders. The R5 is available as an add-on accessory if your product mix requires more rotary versatility than the included axis provides.
LightBurn + EZCad: Your Software, Your Workflow
The B6 MOPA is fully compatible with LightBurn galvo mode on Windows and macOS (version 10.11 and higher) — the same software used across CO₂ and diode machines. If you already run LightBurn for other machines in your shop, the workflow transfers directly with no additional learning curve.
EZCad2 is also included on the USB drive — the industry standard for fiber laser control on Windows. Both can run on the same computer.
A LightBurn library of engraving parameters for various materials is included on the USB drive, calibrated specifically for this machine. Rather than starting parameter development from scratch, you begin with proven starting points for aluminum, stainless, anodized surfaces, and plastics.
Supported file formats include BMP, GIF, JPG, JPEG, DXF, DST, AI, SVG, and more.
Safety: What's Built In and What to Add
The B6 MOPA operates at fiber laser wavelengths that are invisible to the eye and require appropriate precautions. The machine includes safety goggles in the package. An optional safety enclosure is available separately for environments where additional protection or dust containment is needed — strongly recommended for shared spaces, home workshops, or anywhere observers may be present near the machine during operation.
The foot pedal (included) enables hands-free triggering during batch runs — set the material, step on the pedal, and the machine fires without requiring your hands near the engraving zone.
A fume extractor is recommended for regular production use, particularly when marking plastics. The ComMarker 100W Fume Extractor is a compatible option available as an add-on.
The Maker's Chest Difference
The ComMarker B6 MOPA is available from ComMarker directly and from other resellers. Here's what changes when you order through The Maker's Chest:
- 🛡️ 75-day returns — significantly longer than ComMarker's own 30-day return window. Enough time to dial in your MOPA parameter library, run it through your actual production materials, and confirm it delivers what your business needs before you're committed
- 🇺🇸 Expert USA-based technical support — our team understands fiber laser and MOPA operation and can help you with color marking parameter development, LightBurn setup, rotary configuration, and material optimization
- 📞 Dual lines of support — phone and email, so when a question comes up mid-production, you have a direct path to a knowledgeable person
- 🔧 Straight pre-sale guidance — not sure if the B6 MOPA or a different fiber laser configuration is right for your application? Talk to us before ordering. We'll tell you honestly
Specifications and Features
What's Included:
Frequently Asked Questions About ComMarker B6 JPT MOPA Fiber Laser Engraver
Q: What is the difference between the B6 MOPA and the standard B6 fiber laser?
A: The standard B6 uses a Q-switched laser source with a fixed pulse width — it's optimized for fast black and white metal marking. The B6 MOPA uses a JPT MOPA source with independently adjustable pulse width (1–500 ns) and frequency (1–4,000 kHz). This adjustability is what enables color marking on stainless steel and titanium, clean black marking on anodized aluminum without micro-cracking, sensitive plastic marking without melting, and broader parameter control for specialized applications. If color engraving is any part of your business, the MOPA is the correct choice. If you only need fast black marking on metal at a lower price point, the standard B6 is sufficient.
Q: Can it really produce color on stainless steel?
A: Yes. MOPA lasers can produce color engravings on stainless steel, making them popular for decorative and branding purposes. The color is created by a controlled thermal oxide layer produced by specific pulse width and frequency combinations. Golds, blues, reds, greens, and purples are all achievable. Color consistency requires parameter testing and calibration for your specific material — the included LightBurn parameter library provides starting points, and you refine from there.
Q: How does the autofocus work?
A: The machine projects a red dot on the surface, and a sensor measures where that dot is located. Using that information, the machine calculates the focus distance and automatically adjusts the Z-axis — first moving quickly to approximate height, then trimming precisely for high accuracy. Press the focus button, the machine sets itself. Autofocus works with field lenses from 70mm to 200mm; lenses outside this range require manual focus via the electric lift.
Q: What's the native working area, and can I expand it?
A: The standard included field lens provides a 150mm × 150mm working area. Additional lenses — 70×70mm, 100×100mm, 175×175mm, 200×200mm, and 300×300mm — are available separately. Larger lenses increase the working area but reduce energy density, which affects deep engraving and cutting capability. For most jewelry, gifts, and component marking, the 150×150mm lens is the right starting configuration.
Q: Can it cut metal?
A: The 60W B6 MOPA can cut 1–1.2mm stainless steel, aluminum, brass, silver, and gold. This is suitable for thin sheet metal work, jewelry tag cutting, hole piercing, and precision trim cuts. It is not designed for structural metal sheet cutting — that requires a dedicated fiber laser cutter.
Q: Is it compatible with macOS?
A: Yes via LightBurn, which runs natively on macOS 10.11 and higher. EZCad requires Windows — Mac users can run EZCad through Parallels, Boot Camp, or VirtualBox if needed. Most Mac users run LightBurn directly with no workaround required.
Q: What comes in the box?
A: The package includes: B6 MOPA laser engraver, power adapter, data cable, rotary drive, foot switch, Type-C adapter, riser, Allen wrench, placement helper, ruler, safety goggles, OTG adapters, USB drive with software and parameter library, test steel sheet, and hardware assortment.
Q: What safety precautions do I need?
A: Laser safety goggles are included and required during operation. The fiber laser wavelength (1064nm) is invisible and more hazardous to eyes than visible-wavelength lasers. An optional safety enclosure (available separately) is strongly recommended for shared workspaces or home studios where others may be present. A fume extractor is recommended for regular plastic marking work. The foot pedal supports hands-free triggering to keep hands away from the engraving zone during operation.
Q: Why buy from The Maker's Chest instead of directly from ComMarker?
A: ComMarker's direct return window is 30 days. Our 75-day window gives you real time to develop your MOPA parameter library, run production tests on your actual materials, and make a fully informed decision. Our USA-based expert support team is reachable by phone and email with hands-on fiber laser knowledge — available for parameter guidance, color marking optimization, and ongoing production support. If something isn't right, we're the call that gets it resolved.
