Cutting Through the Hype: How the xTool F1 Ultra Handles Acrylic, Metal, Paper, Fabric & More (With Real-World Scenarios)

If you've been shopping for a desktop laser engraver, you've probably seen the xTool F1 Ultra. It's the one with the 20W dual laser source—fiber and diode in one box. On paper, that sounds amazing. In practice, the question is: does it actually deliver on the hype?

Honestly, the answer depends on what you're trying to do. There's no universal 'this machine is amazing' verdict. I learned that the hard way.

Take it from someone who manages purchasing for a small design studio (circa 2024, we do about 200 custom orders a month). I've tested this machine across a few very different scenarios. Here's what I found.

There's No 'One Machine to Rule Them All'

Everything I'd read about dual-laser engravers said they were the ultimate solution—one machine for everything. The conventional wisdom is that a 20W fiber/diode combo will handle whatever you throw at it.

In practice, I found that's true, but with caveats. It handles a wide range of materials, but it doesn't handle all of them equally well. The F1 Ultra is a solid middle-of-the-road machine: it does a lot of things competently, and a few things exceptionally well. But for specific jobs, a dedicated machine might still be faster or cheaper.

So instead of giving you a generic review, I'll break it down by the four most common use cases I see in our shop—and probably in yours.

Scenario A: You're Cutting Acrylic for Signage & Displays

Verdict: It works, but manage your expectations.

For a lot of small businesses (especially the ones I buy for), acrylic cutting is a big part of the job. Nameplates, small signs, display stands. The xTool F1 Ultra can cut acrylic, but there's a thickness limit. It can handle about 2-3mm reliably (depending on the color and quality). Beyond that, you'll start seeing burn marks or incomplete cuts.

What most people don't realize is that 'cutting acrylic' on a diode laser is very different from doing it on a CO2 laser. The F1 Ultra's diode source (the 20W part) does a decent job, but it's not a CO2 replacement. For thin, colored acrylic (like the 2mm stuff we order for shelf tags), it's great. For thick, clear acrylic? You'll need multiple passes and a lot of patience.

The insider tip: If you're doing a lot of thick acrylic (say, 5mm+), this machine is not your primary tool. But if you need to cut thin acrylic occasionally, it'll do the job. For our shop, it replaced a separate dedicated rotary tool for small jobs. That saved us about 4 hours a month in setup time.

Checklist for Acrylic Users:

• Stick to 2-3mm thickness for clean cuts.
• Use the 'acrylic' preset in LightBurn or xTool's software.
• Expect slower speeds than a CO2 laser (about 20-30% slower).
• Budget for a good air assist to reduce soot.

Scenario B: You're Engraving Metal (Coins, Tools, Jewelry)

Verdict: This is where it shines—but only for specific metals.

The F1 Ultra's claim to fame is the dual laser. The 20W fiber laser is specifically for metals. And honestly? It's pretty good.

We had a client order in Q4 2024: engrave custom logos onto 500 brass keychains. We tested a diode-only unit first (a different brand, basically useless for metal). The F1 Ultra fiber source handled it like a champ. Deep, crisp engravings in about 3 minutes each.

Here's something vendors won't tell you: the fiber laser is great for marking and engraving on metals like brass, stainless steel, aluminum, and titanium. But it's not designed for cutting thick metal. It's a surface tool. For our keychain job? Perfect. For cutting a steel plate? Not a chance.

The diode laser does work on metal too, but only on coated or anodized surfaces (think powder-coated tumblers). The fiber source is the real workhorse here.

The cost angle: Per piece, this is cheaper than outsourcing. For 500 keychains, we paid about $0.80 per engraving in electricity and wear-and-tear. Our usual vendor wanted $3.50. So we saved about $1,350 on that one job. (Prices as of early 2024; verify your own costs).

Scenario B Best For:

• Engraving logos on small metal items.
• Serial numbers on tools or parts.
• Personalized jewelry (rings, pendants).
• Custom metal signs (small format).

Scenario C: You're Cutting Paper & Cardstock (Greeting Cards, Packaging)

Verdict: Overkill, but surprisingly good.

Laser cut paper is a growing niche—wedding invitations, business cards, decorative packaging. Can the F1 Ultra do it? Yes. Is it the best tool? No. But it's a decent fit if you already own the machine for other things.

For paper and cardstock, the diode laser is more than enough. You don't need the fiber source. The machine can handle thin materials (<200gsm) very quickly. We cut a batch of 50 custom star-shaped tags for a client's packaging in about 15 minutes. The edges were clean, no scorching (thanks to the air assist).

**The old belief:** That paper cutting requires a dedicated plotter or Cricut. That's what everyone told me. **The new reality:** For complex geometric cuts, a laser is actually more precise and faster than a blade. It doesn't get dull, and there's no kerf to account for.

But here's the trade-off: if you're cutting paper all day (like a packaging company), a $200-400 dedicated paper cutter is cheaper and quieter. The F1 Ultra is great for occasional use, but it's meant to be a multi-purpose machine, not a paper-only specialist.

Quick Tip for Paper Users:

• Use low power (5-10% on the diode) to avoid scorching.
• Masking tape on the edge can prevent burning on white cardstock.
• Clean the lens more often—paper dust is fine and builds up.

Scenario D: You're Cutting Fabric (Clothing, Patches, Accessories)

Verdict: It works, but watch out for fumes and fraying.

Fabric cutting is a newer use case for desktop lasers. People ask me about this a lot: 'How do you laser cut fabric at home?' The answer is that it's possible, but it's not like cutting paper.

For synthetic fabrics (polyester, nylon), the laser essentially melts and seals the edge simultaneously. This prevents fraying, which is great. The F1 Ultra handles this well on the diode setting. For natural fibers (cotton, linen, felt), the laser cuts but doesn't seal—so you get frayed edges.

Honestly, the results surprised me. For our test project (cutting patches for a clothing line), the diode laser cut through 3 layers of denim in one pass. The edges were sealed (we used the fiber source at low power to finish the edges). It's not a serger, but for small batches of patches or labels, it's actually faster than a manual cutter.

Caveat: The smoke and odor are real. Laser cutting synthetic fabric creates fumes. You absolutely need a good ventilation setup. We run ours with a fume extractor and still open a window. Don't use this indoors without proper exhaust.

How to Know Which Scenario You're In

So, which camp are you in? Here's a simple guide to help you decide if the xTool F1 Ultra is right for you.

You should buy this machine if:

• You need to work with multiple materials (metal, wood, acrylic, fabric) on a single desktop platform.
• You run a small shop or makerspace and value flexibility over specialization.
• Your primary use is metal engraving (the fiber laser is the real value here).
• You have a budget of about $1,000–$1,500 (as of early 2025) and want a dual-source machine.
• You're willing to trade top speed for the convenience of one device.

You should pass if:

• You only cut thick acrylic (5mm+). Get a CO2 laser.
• You only cut fabric all day. Get a dedicated fabric cutter or a Cricut.
• You need to cut thick metal (sheets, plates). This machine can't do that.
• You need a production-level throughput for one specific material. Specialized gear is faster.

Final Thoughts

Look, I'm not going to tell you the xTool F1 Ultra is the best laser engraver ever. But for a small business like ours, it honestly hit a sweet spot. It's not perfect at everything, but it's good enough at most things. That saves us from buying three different machines for three different jobs.

The dual laser is a real advantage for metal work. The compact size fits on a standard desk. And the rotary support means we can do cups and bottles. The drawbacks are the speed (it's not a racecar), the acrylic thickness limit, and the need for good ventilation.

If you're in that 70% sweet spot—the small business that needs 80% of possible jobs done reasonably well—this machine is a solid choice. If you need a specialist, look elsewhere.

Prices as of March 2025; verify current rates at the manufacturer's site. Regulatory info on laser safety is per ANSI Z136.1; check local codes.