How to Set Up a Fiber Laser Engraver: Software, Focus and Your First Project

Getting your fiber laser engraver set up right the first time makes everything easier. Get it wrong and you spend the next few sessions troubleshooting problems that were preventable. This guide walks through the entire process in the order it actually needs to happen — workspace, hardware, software, focus, and your first test run — in plain language without unnecessary complexity.

Whether you've just unboxed a ComMarker B4, a B6 MOPA, or another compact galvo fiber laser, the core setup process is consistent across machines. Where specific machines differ significantly, those differences are noted.

---

What to Do Before You Power It On

Placement, Ventilation and Power Requirements

Where you place your machine and how you manage fumes affects both your safety and your results. Get this right before anything else.

Stable surface. Fiber lasers use high-speed galvo mirrors that are sensitive to vibration. Any movement or vibration during engraving causes blurry, inconsistent marks. A solid workbench — ideally metal or thick wood, not a flimsy folding table — is the baseline. The machine shouldn't wobble when you press on the corner.

Ventilation. Fiber lasers vaporize the surface layer of the material they engrave. On metals, this produces fine metallic particles and oxide fumes. On coated materials, it can release compounds from the coating. You need either a dedicated fume extractor with a HEPA + activated carbon filter sitting adjacent to the machine, or an exhaust fan pulling air from the work area out through a window or vent. A box fan pointed at an open window is better than nothing but not a proper solution for regular production work. If you're engraving daily, invest in a proper extractor.

Power. Most compact desktop fiber lasers run on standard 110V/120V household outlets in North America. Check your specific machine's power draw — a 50W machine typically pulls 500–700W, a 20W machine closer to 200–300W. These are well within household outlet capacity, but don't run the machine on an extension cord shared with other high-draw equipment.

Clearance. Even if your machine is enclosed, leave at least 30cm on all sides for cable management, material handling, and air circulation around the cooling system. Open-frame machines need additional clearance because the beam path is exposed.

Lens Selection and Installation

Most compact fiber lasers ship with two field lenses included: a smaller focal length lens (typically 110mm) and a larger one (typically 200mm). This is often where beginners make their first mistake — installing the wrong lens for their intended work, or not understanding what the choice changes.

110mm lens (smaller working area, finer detail): Produces a smaller spot size, which means higher energy density and better resolution on fine detail. Working area is approximately 110×110mm. Best for: jewelry, micro-text, intricate logos, small components. If you're engraving detailed designs on small items, this is typically your default lens.

200mm lens (larger working area, lower energy density): Spot size is larger, energy density per unit area is lower, working area expands to approximately 200×200mm. Better for: larger fills, big logos on metal sheets, color engraving on stainless (the larger spot actually helps achieve consistent oxide formation for color work). Less appropriate for fine detail.

To install a lens: power the machine off, unscrew the current lens from the galvo head housing, thread the new lens in until finger-tight, then a quarter turn with the spanner provided. Don't over-tighten. Once installed, verify the lens is seated flat — a tilted lens causes uneven beam quality across the working area.

If your machine has a 70mm "small lens" option (common on ComMarker machines), that's primarily for very high energy density applications — deep engraving on small areas and, on UV machines, embedded glass work. For standard fiber engraving, start with 110mm.

---

Software Setup

Installing EZCAD2

EZCAD2 is the industry-standard control software for fiber galvo lasers. It ships with virtually every fiber engraver on a USB drive. It's not pretty by modern software standards, but it's stable, powerful, and has been the professional standard for years. Install the version from your manufacturer's USB drive, not a downloaded version from an unknown source — machines come with pre-configured correction files (.cor files) specific to the laser and lens combination that EZCAD2 needs to function correctly.

Installation steps:

1. Copy the contents of the USB drive to your desktop (don't run directly from USB)
2. Open the software folder matching your lens (there will be separate folders for 110mm, 200mm, etc.)
3. Run the EZCAD2 installer
4. After installation, open EZCAD2 and go to File → Load Correction File → browse to the .cor file in your lens folder
5. Connect your machine via USB, power it on, then hit F1 or go to File → Start to initialize the connection

The .cor file is critical — it tells EZCAD2 how to compensate for the distortion that the field lens introduces across the working area. Without it, your marks will be bowed or distorted, especially near the edges of the work area. Always match the .cor file to the lens you've installed.

Setting Up LightBurn for Fiber (If Applicable)

LightBurn has become many makers' preferred interface for fiber lasers because it's significantly more intuitive than EZCAD2, has a visual design workspace, and benefits from a massive community of tutorials and parameter libraries. If your machine is LightBurn compatible, it's worth setting up alongside EZCAD2.

LightBurn compatibility check: Most ComMarker machines (B4, B6 MOPA, Omni 1) support LightBurn via the Galvo plugin. Some newer machines — notably xTool's F2 Ultra lineup — do not officially support LightBurn. Check your machine's spec sheet before purchasing the LightBurn license.

Setup process:

1. Purchase the LightBurn Galvo license (this is separate from the standard diode/CO2 LightBurn license)
2. Install LightBurn
3. Go to Devices → Create Manually → select your machine type (BJJCZ controller for most fiber lasers)
4. Enter your working area dimensions matching your installed lens
5. Load the .cor correction file: go to Edit → Machine Settings → Galvo device settings → browse to your .cor file

LightBurn's material parameter library system is one of its main advantages — the community shares parameter files for specific machines and materials, which gives you tested starting points without building everything from scratch.

Connecting Your Machine

Whether using EZCAD2 or LightBurn, the connection process is the same. Power on the machine first, then connect via USB, then open the software. Connecting in the wrong order can cause the software to fail to detect the machine.

If the machine isn't recognized: check Device Manager (Windows) for the BJJCZ or equivalent controller, update the USB driver if needed, and try a different USB port (avoid USB hubs if possible — direct connection to a motherboard port is most reliable). The USB cable that ships with the machine is typically the right one; some third-party cables cause intermittent connection issues.

For machines with a touchscreen controller (like the ComMarker B6 MOPA), the touchscreen can also trigger framing and start jobs without a PC — useful for simple batch work once you've set up your files.

---

Setting Focus Correctly

Focus is the single most important variable in fiber laser performance. The laser beam is only at its minimum spot size — and maximum energy density — at one specific distance from the lens: the focal point. Even 1–2mm off focus noticeably reduces mark quality.

Manual Focus: Step-by-Step

Most compact fiber lasers focus manually using an electric lifting motor and a red laser pointer alignment system.

The ComMarker B4 and B6 MOPA use a dual red dot system: two red diode laser pointers are positioned at angles, and they converge on a single point on the material surface when the machine is exactly at the correct focal distance.

Step-by-step manual focus:

1. Place your material flat on the work surface
2. Power on the machine and activate the red pointer (usually by pressing the "Frame" or preview button in software, or a physical button on the machine)
3. Use the up/down arrow buttons on the machine (or software Z-axis control) to raise or lower the laser head
4. Watch the two red dots on the material surface — when they converge to a single point (or get as close together as possible), you're at correct focus
5. Note the Z-height position for this material thickness — you can use it as a reference for future pieces of the same thickness

A practical shortcut: make a simple focus spacer from scrap material. Measure the correct focal distance from the bottom of the lens housing to the material surface (your manual will specify this — typically 160–180mm from the galvo head to the work surface for a 110mm lens). Cut a piece of wood, acrylic, or 3D print a spacer to this exact height. Use it to set focus consistently without the dot-convergence process every time.

Autofocus: What to Watch For

Some machines include motorized autofocus with a sensor — the ComMarker B6 MOPA uses a Panasonic industrial sensor that moves the Z-axis to the correct focal distance automatically at the press of a button.

Autofocus is genuinely convenient and consistently accurate, but a few things to watch for:

Reflective materials can fool optical sensors. Very highly polished metal can reflect the autofocus sensor beam at odd angles. If autofocus lands in an unusual position on a mirror-polished piece, do a quick manual verification.

Autofocus sets focus at the top surface. For most applications this is correct. For embedded glass engraving (on UV machines with Z-axis support), you need to intentionally focus below the surface — autofocus to the surface first, then step down manually.

Verify autofocus is repeatable. On a new machine, test autofocus three times in a row and check that the Z-height is consistent. If it varies by more than 0.1mm, investigate the sensor placement.

---

Running Your First Test

Red Light Preview and Framing

Before the laser fires, always frame your job using the red light preview. In EZCAD2, press F1 to start a frame (or the dedicated Frame button). In LightBurn, click the Frame button. The galvo mirrors will trace the bounding box of your design on the material surface using the red pointer.

Check that the frame:

• Is positioned where you expect the design to engrave on your material
• Is fully within the material boundaries (nothing hanging off an edge)
• Is the correct size (if it looks too large or small, check your design dimensions and units)

Only after confirming the frame looks correct should you run the actual job. Framing takes 3–5 seconds and prevents the very common mistake of engraving in the wrong position or at the wrong scale.

Starting Parameters for Stainless Steel

Stainless steel is the ideal first material because it's widely available, reasonably priced, reacts predictably, and shows results clearly. Here are reliable starting parameters for a 20W fiber laser with a 110mm lens on clean 304/316 stainless steel:

For high-contrast black marking (standard logo/text engraving):

• Power: 60–70%
• Speed: 500–800 mm/s
• Frequency: 30–50 kHz
• Passes: 1–2
• Hatch spacing: 0.05mm
• Fill type: Line fill

For surface marking / lighter engraving:

• Power: 40–55%
• Speed: 800–1,200 mm/s
• Frequency: 40–60 kHz
• Passes: 1

These are starting points, not guaranteed settings. Every machine and every batch of steel is slightly different. The first thing to do with any new machine is engrave a power/speed test grid — a matrix of small squares varying power across one axis and speed across the other — to find your specific sweet spot.

For 30W or 50W machines, start power 10–15% lower than these figures — the higher wattage delivers proportionally more energy, and you want to avoid burning through your starting parameters.

For a comprehensive settings guide covering anodized aluminum, brass, titanium, and leather alongside stainless, our guide to how to laser engrave metal covers the full material range with settings methodology.

Reading the Result and Adjusting

Once your first test burn is complete, evaluate the result:

Mark is too faint or shallow: Increase power by 5–10%, or reduce speed by 100–200 mm/s. Try increasing passes to 2 before pushing power much higher.

Mark is dark but edges are blurry: Focus is likely slightly off. Re-verify focus using the dot-convergence method and re-run.

Surface is burned or discolored beyond the design edges: Power is too high or speed too slow. Reduce power by 5–10%, or increase speed.

Lines look doubled or ghosted: The galvo calibration (correction file) may not be loaded, or the wrong .cor file is selected for your lens. Verify this in your software settings.

Inconsistent depth across the area: Focus may be off due to the material not being flat on the work surface. Check that the metal is completely flat and not bowed.

---

Safety Checklist Before Every Session

This isn't meant to be intimidating — fiber laser safety in a home workshop is manageable with consistent habits. Run through this before every session:

• Laser-rated eyewear on. Wear glasses rated for 1064nm at your machine's output power. The wavelength sticker on your machine confirms what wavelength protection you need. Don't use general safety glasses.
• Enclosure closed or safety shield in place. If your machine is open-frame, position the orange acrylic safety shield that ships with the machine between the work area and your seating position.
• Ventilation on. Start your fume extractor before the first job, not after you smell something.
• Area clear. No flammable materials within a meter of the work area.
• Water glass nearby. Not a substitute for proper safety practices, but having water on hand for a thermal incident is basic workshop sense.
• Material secured. A piece of metal that shifts during engraving creates blurred marks at best, a runaway beam path at worst. Use the included clamps or tape your material flat.

One additional note on open-frame machines: the 1064nm near-infrared wavelength emitted by fiber lasers is invisible to the human eye, and it does not trigger the eye's blink reflex the way visible light does. This makes it more hazardous than visible-light lasers for accidental exposure. Always treat an open-frame fiber laser as live when powered on, even when you're not actively engraving.

---

Common First-Session Mistakes to Avoid

These are the errors that appear most often in beginner forums and are all entirely preventable:

Running jobs without loading the correction file. The .cor file compensates for lens distortion. Without it, your engraving will be slightly bowed or distorted, especially at the edges of the working area. This is the single most common cause of "my lines aren't straight" in new setups.

Wrong lens selected in software. If you have a 110mm lens installed but EZCAD2 is configured for a 200mm working area, your designs will scale incorrectly and your correction file won't apply properly. Match the software configuration to the physical lens.

Skipping the test grid. It's tempting to jump straight to engraving your actual design. Engraving a 3×3 or 4×4 grid of small squares with varying power and speed settings first takes 10–15 minutes and saves hours of rework. Do the test grid.

Not cleaning the material. Oils, fingerprints, and manufacturing coatings on metal affect how the laser interacts with the surface. Clean your metal with isopropyl alcohol before engraving. This matters even more if you're attempting color work.

Designing with raster images instead of vectors. Fiber galvo lasers are optimized for vector fills — paths the galvo mirrors trace at high speed. Large raster (bitmap) fills process much more slowly and at lower resolution. Design in vectors (or convert to them) for best results.

Trying color engraving on day one. Color engraving is the most parameter-sensitive application in fiber laser work. Master basic black marking and deep engraving first. Add color after you understand how your machine responds to power and speed changes.

---

Next Steps: Expanding to More Materials

Once you have consistent results on stainless steel, the natural progression is expanding to other metals and then to coated materials.

Anodized aluminum is the next most beginner-friendly material. It marks in high contrast at lower power than stainless — start at 30–50% power, 1,000–1,500 mm/s. The laser interacts with the anodized coating rather than the metal, producing a white or dark mark depending on parameters.

Brass and copper require more power than stainless due to their higher thermal conductivity, which draws heat away from the surface quickly. Start at 70–80% power, 400–600 mm/s.

Titanium marks beautifully and — on MOPA machines — produces some of the most vivid color effects available on any metal. Settings broadly similar to stainless steel but color parameters differ significantly. Worth experimenting with once you're comfortable with basic stainless work.

Coated materials (painted metals, powder-coated surfaces, anodized finishes) generally require less power to mark since you're removing the coating rather than ablating the base metal. Start conservatively at 30–40% power.

If you're working toward color engraving on stainless steel or titanium — one of the most commercially valuable applications for MOPA fiber lasers — our guide to fiber laser color engraving covers the MOPA-specific settings methodology in full. The difference between a standard Q-switched fiber laser and a MOPA when it comes to color is substantial — our MOPA vs standard fiber laser guide explains why if you're still deciding which type of machine to buy.

For users who chose the xTool F1 Ultra with its dual fiber and diode laser system, our xTool F1 Ultra review covers machine-specific software setup for xTool Creative Space and the particular workflow differences from EZCAD2-based machines.

The learning curve on fiber laser engraving is real but not steep. The most experienced engravers you'll find in community forums all went through the same test-grid-and-document process that this guide describes. Build your parameter library systematically, take notes, and the results improve quickly.

---

Frequently Asked Questions

What software do I need to set up a fiber laser engraver?

Most fiber lasers ship with EZCAD2 on a USB drive — it's the industry standard for galvo fiber lasers and works with virtually all BJJCZ-controlled machines. Install it from the manufacturer's USB drive (not a downloaded version) to ensure you get the correct correction files for your lens. LightBurn is a popular alternative with a more intuitive interface, available separately via the LightBurn Galvo plugin license. Not all machines support LightBurn — check compatibility with your specific model before purchasing. Some newer machines (like xTool's F2 Ultra) use proprietary software exclusively.

How do I focus a fiber laser engraver?

Most compact fiber lasers use a dual red-dot manual focus system: two angled red laser pointers converge to a single point on the material surface when the machine is exactly at the correct focal distance. Use the electric Z-axis adjustment buttons to raise or lower the laser head until the two dots overlap as closely as possible. Some machines (like the ComMarker B6 MOPA) have motorized autofocus using an industrial sensor, which automates this process at the press of a button. Correct focus is essential — even 1–2mm off focus noticeably degrades mark quality and resolution.

What are the best starting settings for a fiber laser on stainless steel?

For a 20W fiber laser with a 110mm lens on clean 304/316 stainless steel, reliable starting parameters for high-contrast black marking are: power 60–70%, speed 500–800 mm/s, frequency 30–50kHz, 1–2 passes, 0.05mm hatch spacing. These are starting points — always run a power/speed test grid on scrap material before engraving production pieces. Adjust by increasing power or reducing speed if marks are too faint, and reduce power or increase speed if edges are burning or discoloring.

Do I need EZCAD or can I use LightBurn for a fiber laser?

Both work well, and many users set up both. EZCAD2 is more powerful for industrial parameter control and is the default supported by all fiber laser manufacturers. LightBurn is generally more intuitive, has a larger community of tutorials and shared parameter files, and has a better visual design workspace. If your machine supports both (most ComMarker B-series machines do), it's worth installing LightBurn alongside EZCAD2 and deciding which you prefer for different workflows. Note that the LightBurn Galvo plugin is a separate paid license from the standard LightBurn gantry license.

Why does my fiber laser produce blurry marks?

Blurry marks almost always indicate a focus problem. Verify that your machine is at the correct focal distance using the dual red-dot alignment or autofocus, and that your material is completely flat on the work surface. A second common cause is a missing or incorrect correction (.cor) file in EZCAD2 — if the correction file doesn't match your installed lens, distortion and blur will appear especially at the edges of the working area. Verify the correct .cor file is loaded in your software settings.

What's the difference between the 110mm and 200mm lens for fiber engraving?

The 110mm lens produces a smaller, more concentrated spot for finer detail, with a working area of approximately 110×110mm. The 200mm lens produces a larger spot and lower energy density per unit area, with a working area of approximately 200×200mm. Use the 110mm lens for fine detail, micro-text, and jewelry work where resolution is the priority. Use the 200mm lens for larger fills, bigger pieces, or color engraving on stainless steel (the larger spot helps achieve consistent oxide formation). Always load the matching correction file in your software when switching lenses.

How long does fiber laser setup take?

Physical assembly (attaching the column and laser head on most compact machines) takes 15–30 minutes. Software installation and configuration — installing EZCAD2, loading the correction file, verifying the USB connection — takes another 30–60 minutes including troubleshooting. Focus calibration and your first test grid add another 30–45 minutes. Budget a full afternoon for your first session: 2–3 hours to get properly set up, calibrated, and through your first successful test burn. Rushing the setup phase is the main reason beginners spend days troubleshooting problems that a careful first session would have prevented.