XTool F1 Ultra Review: Can a 20W Dual Laser Really Cut Metal?

Here's the short answer: Yes, the XTool F1 Ultra can cut thin metal, but only with its fiber laser. I learned this the hard way.

When I first unboxed my XTool F1 Ultra, I assumed its 20W of laser power meant it could handle anything. Steel, aluminum, thick plywood—I thought I'd bought a universal material killer. I was wrong. And I wasted about $320 in material before I understood the key difference between its two lasers.

The F1 Ultra isn't a single laser. It's two completely different laser systems packed into one machine: a 20W fiber laser and a 20W diode laser. They operate at different wavelengths and have completely different material capabilities. Thinking of it as one 20W laser is the single biggest mistake you can make.

My Background & The $320 Mistake

I'm a product designer handling custom fabrication orders for about three years. I've personally documented 30+ significant mistakes in my workshop, totaling roughly $4,800 in wasted material and time. I now maintain our team's pre-processing checklist to prevent others from repeating my errors.

In my first year (2021), I made the classic newbie mistake: I assumed more power equals more capability across all materials. So, I ordered a batch of 200 stainless steel tumblers and 300 walnut coasters for a corporate client. The idea was to engrave the tumblers with the logo and cut the coasters myself.

Let's just say the first test run didn't go as planned. I tried cutting the 3mm walnut with the fiber laser. It charred the edges but didn't cut through. Then I tried engraving the stainless steel with the diode laser. It left a faint, uneven mark that wiped off with a fingernail. $320 worth of material, straight to the trash. That's when I learned: you have to match the laser to the material.

The Dual Laser System Explained

The XTool F1 Ultra combines a 20W fiber laser (wavelength: 1064nm) with a 20W diode laser (wavelength: 455nm). You don't use them together. You select one or the other based on what you're processing.

• Fiber Laser (1064nm): This is your metal and plastic specialist. It can engrave and cut thin metals (stainless steel, aluminum, brass) and mark plastics. It's also excellent for deep engraving on hard materials. The beam is highly focused and efficient.
• Diode Laser (455nm): This is your organic material champion. It's fantastic for cutting and engraving wood, plywood, leather, acrylic, paper, and fabric. It's also faster than the fiber laser on these materials. It won't touch metal.

I went back and forth between the two lasers for weeks. The fiber laser offered industrial-grade precision on metals, but the diode laser was faster on the wood and acrylic I use for 80% of my orders. Ultimately, I chose the F1 Ultra because the dual-laser flexibility let me stop switching between two different machines.

XTool F1 Ultra Specs: The Numbers You Actually Need

According to XTool's official specifications and my own testing, here are the critical specs for the F1 Ultra:

• Fiber Laser: 20W output, 1064nm wavelength
• Diode Laser: 20W output, 455nm wavelength
• Work Area: 175mm x 175mm (approx. 6.9" x 6.9")
• Engraving Precision: 0.01mm (fiber), 0.02mm (diode)
• Max Cut Thickness (Metal): Up to 0.5mm mild steel, 0.3mm aluminum (I've achieved this consistently)
• Max Cut Thickness (Wood): Up to 10mm basswood (depends on density)
• Air Assist: Built-in
• Rotary Attachment: Included (crucial for tumblers and cylindrical items)

What I mean by 'max cut thickness' is a single, clean pass. For thicker material, you'll need multiple passes. For 1mm aluminum, I've used two passes with a slower speed and higher power. It works, but it's slower. So, when you see 'cut metal' in the marketing, think thin metal (under 0.5mm) and be prepared to tune your settings.

Can the XTool F1 Ultra Cut Wood?

Yes, absolutely, and it's excellent at it. Using the 20W diode laser, I've cut 3mm basswood and 5mm plywood with clean, almost burn-free edges (the built-in air assist is a lifesaver here). I've also cut 8mm acrylic in a single pass. For thicker pieces, multiple passes are the way to go. It's not a replacement for a high-power CO2 laser for thick materials, but for the majority of small-to-medium projects, it's more than capable.

If I remember correctly, my first test cut on the F1 Ultra was a 5mm birch plywood piece. It took about 45 seconds. The edge was clean and needed no sanding. That was a very different experience from my earlier $320 failure with the wrong laser.

Fiber Laser vs. Diode Laser: The Core Difference

Put another way: the fiber laser is for the hard stuff (metals, hard plastics). The diode laser is for the organic stuff (wood, leather, acrylic). Trying to use the diode laser on metal is like trying to cut steel with a butter knife. It won't work. Trying to use the fiber laser on wood is like using a scalpel to chop firewood. It works, but it's slow, and the results are often poor.

When I compared our Q1 (using an older diode-only machine) and Q2 (using the F1 Ultra) results side by side, I finally understood why the details matter so much. In Q1, I had to farm out all metal engraving. In Q2, I did it all in-house. My lead time dropped by 40%, and my profit margin on those tumbler orders increased by 25%.

One Thing No One Tells You: Material Preparation is Key

A common mistake I see is people blaming the machine for poor results when it's actually a material issue. For example:

• Metal: You need a clean, oil-free surface. A quick wipe with isopropyl alcohol before engraving makes a huge difference.
• Wood: The moisture content matters. Wood that's too wet will produce a gummy, charred edge. Let your wood acclimate to your workshop for 24-48 hours before cutting.
• Acrylic: Cast acrylic is better for laser cutting than extruded acrylic. Cast produces a clean, flame-polished edge. Extruded leaves a frosted, messy edge.

That setup error on my $320 order? It wasn't the machine's fault. It was my fault for not prepping the material and not checking the laser-material compatibility. I learned to have a pre-check list that includes material sourcing, laser mapping, and a small test cut before touching the final product.

When the XTool F1 Ultra Isn't the Right Choice

Honestly, it's not for everyone. If your work is primarily thick hardwoods (over 15mm) or you need to do high-volume production cutting of large acrylic sheets, a dedicated CO2 laser is a better, faster tool. The F1 Ultra's work area is also quite small. You won't be cutting 2-foot-wide signage on it.

It's also worth noting that the fiber laser's cutting ability on metal is limited to thin gauge material. Don't expect to cut 3mm steel plate. For that, you're looking at a much more expensive, high-power fiber laser system.

But for what it is—a compact, desktop dual-laser system that can handle both metal engraving and wood cutting with a single machine? The XTool F1 Ultra is, in my experience, a fantastic tool for a specific job. I'd rather spend 10 minutes explaining its limits to a client than deal with mismatched expectations later. An informed customer asks better questions and makes faster decisions.