xTool F1 Ultra: How to Set It Up for Gun Engraving, Fabric Cutting, and 3D Files

Is the xTool F1 Ultra the fastest laser engraver? For a desktop dual-source machine, it's definitely one of the quicker ones I've worked with. But 'fastest' is a dangerous word, because speed only matters when the output actually looks right.

I'm a quality and brand compliance manager at a small manufacturing studio. I review roughly 200 engraved pieces a month, and in Q1 2025 I rejected about 7% of first attempts because someone used the wrong laser source or the wrong file setup. The machine wasn't the problem. The scenario was.

So this guide isn't going to give you one magic setting. Instead, I'll walk through the three jobs I get asked about most: metal engraving, fabric cutting, and 3D layered files. Each one needs a different approach.

First, Understand the Two Lasers

The F1 Ultra has two laser sources in one box: a 20W fiber laser and a 20W diode laser. That combination is the reason people buy it. But it also creates confusion, because the software can't read your mind.

Basically, the fiber source is for metals and some hard materials. The diode source is for organics like wood, leather, glass, and certain fabrics. If you use fiber on wood, you'll probably get a weak mark or worse. If you use diode on bare steel, you'll get almost nothing.

That sounds obvious, but I've lost count of how many times a client sent a photo of a failed job and it was simply the wrong source. In our shop, we print a material/laser source chart and tape it above the machine. It saves us from repeating dumb mistakes.

Scenario A: Metal Engraving and Gun Parts

This one is straightforward: switch to the fiber source. For xTool F1 Ultra gun engraving, the fiber laser is what handles metal. It's a 1064nm wavelength that metal absorbs well, unlike the diode beam.

If you're engraving a receiver, a slide, or any gun part, the first step isn't software. It's safety. Clear the firearm, remove the action if possible, and confirm the part is stable in the jig. Also check local regulations before you start. I'm not a lawyer, so this isn't legal advice. It's just the part where I'd pause.

On tooling: use a rotary fixture if you're marking a curved surface like a barrel. A flat job doesn't need it, but a curved part will come out blurry or uneven without one. The F1 Ultra supports rotary, and it's worth the setup time.

Most metal engraving software presets assume the material is bare, clean, and not coated. But gun parts often have bluing, cerakote, or anodizing. That coating changes how the laser interacts with the surface. I've seen a beautifully polished steel piece come out looking like a chalky mess because the coating had a lower burn threshold. So run a test on a scrap piece or an inconspicuous spot.

One caution: don't crank the power to maximum and expect faster results. On metal, too much power can cause micro-charring and actually slow you down because you need to clean the residue. Start at around 80% power and adjust speed based on the depth you need.

Scenario B: Fabric Laser Cutting

Fabric laser cutting is a different game. For most natural fabrics, the diode source is the right choice. Cotton and linen cut fairly cleanly. But synthetic blends are risky. Polyester and nylon can melt instead of cut, and some synthetic materials release fumes you don't want in your workspace.

A few years ago, my gut told me a 'cotton' tote bag would cut fine. The spec sheet said cotton. The actual material was a cotton-polyester blend, and the edges melted into hard, ugly beads. That was the moment I changed my rule: always burn-test the actual fabric before promising a client a delivery date.

For fabric, I usually start with a lower power, a faster speed, and multiple passes. That's counterintuitive for people coming from cutting plywood. With fabric, one heavy pass can create too much heat and melt the edges. Two lighter passes often give you a cleaner cut. The tradeoff is speed, but quality wins.

You also need ventilation. Laser cutting any fabric creates smoke. Synthetic fabrics can release chlorine gas or other irritants. I don't mean to sound dramatic, but I'd rather mention it and have you think I'm overly cautious than have you set this up in your kitchen.

Scenario C: 3D Layered Files and Software Workflow

When people talk about 3D laser cut files, they usually mean layered wood or acrylic projects. You cut multiple sheets with different layers and stack them to create depth. The F1 Ultra can handle this well, but only if the software workflow is clean.

You'll likely use xTool Creative Space (XCS) for the machine. It's the bundled software, and it maps colors to power and speed settings. I want to say LightBurn support exists for the F1 Ultra, but don't quote me on that—compatibility changes over time, so check the xTool site before assuming.

The biggest mistake I see in 3D file work is ignoring layer color assignments. A 3D file usually has a contour layer, an engrave layer, and maybe a scoring layer. If those aren't separated by color, the laser will treat everything the same and your final piece will look flat or burnt.

For photo engraving inside a 3D project, treat the source image like a print file. 300 DPI at final size is the minimum I'd use for a clean result. That's a common standard in commercial print, and it translates well to laser work. Vector outlines for cutting matter more than DPI, but for grayscale engraving, start at 300 DPI.

A client sent me a job last year with four layers of acrylic. On paper, it was perfect. In practice, the bottom layer was so charred that it didn't fit the pocket. The issue wasn't the machine—it was the fact that the file had all the cut lines in one color, so every layer got the same power. It took one phone call and five minutes in XCS to split it into separate colors.

How to Tell Which Scenario You're In

If you're not sure which setup to use, ask yourself these three questions:

• Is the base material metal, or is it a coated metal? Then you're in Scenario A. Use the fiber source, test a coated sample first, and don't forget the rotary fixture for curved parts.
• Is the material fabric, wood, leather, or glass? Then you're in Scenario B. Use the diode source, start with lower power and multiple passes, and verify what the fabric is actually made of.
• Is the job a multi-layer file with cut, engrave, and score lines? Then you're in Scenario C. Open the file in XCS, assign a color to each operation, and test one layer before cutting the whole batch.

There's overlap, of course. A layered wood sign is both a diode job and a 3D file job. The reason I split them is because the biggest failure points are different. For a wood sign, the failure is usually an incorrect toolpath. For metal, it's usually a coating or focal height issue. For fabric, it's usually heat and material composition.

Bottom Line

The F1 Ultra is a capable machine, but capability doesn't mean universal. I'd rather spend ten minutes explaining material and file setup than deal with a ruined order later. An informed customer asks better questions, and that makes my quality review easier.

One last thing: for brand-critical projects, color consistency can be as important as cut quality. Pantone's Color Matching System guidelines put Delta E below 2 as a close tolerance for printed color. Laser engraving won't hit a Pantone formula, but mentioning that standard to a client sets realistic expectations before you start.

So no, there isn't one right answer for the F1 Ultra. There's the right answer for your material, your file, and your quality bar. Test on scrap, label your presets, and keep notes. That's what makes the machine look fast.