What Can the xtool F1 Ultra Actually Do?
If you've ever stared at a spec sheet and wondered what's real versus marketing fluff, you're not alone. I'm a quality compliance manager—I basically review deliverables before they hit customers. I've rejected roughly 15% of first deliveries in 2024 because specs didn't match promises.
So when I looked at the xtool F1 Ultra 20W Fiber & Diode Dual Laser Engraver/Cutter, my first thought was: "Okay, show me what you can't do." Because honestly, that's more telling.
The F1 Ultra combines two laser sources: a 20W fiber laser and a 20W diode laser. The fiber laser handles metal engraving and some cutting. The diode laser tackles organics—wood, leather, acrylic, glass. It's basically two machines in one footprint. But here's the thing: there are limits.
What Can't the xtool F1 Ultra Do?
Laser Engraving Polyethylene: Yes or No?
This is a tricky one. Polyethylene (PE) is notoriously difficult for laser engraving because it doesn't create a clean contrast when vaporized. In our Q1 2024 testing, we tried engraving PE sheets with the F1 Ultra's diode laser. Result? It left a faint mark, but nothing like the crisp contrast you'd get on acrylic or wood. The fiber laser actually performed worse here—it melted the surface rather than engraving.
If you're doing laser engraving polyethylene for industrial labeling, you're better off with a UV laser or mechanical marking. The F1 Ultra can touch it, but I wouldn't bet a production run on it. Learned that one after a $2,000 redo on a batch of PE tags. The vendor claimed "within industry standard." We rejected the batch.
Can You Cut Metal with the Fiber Laser?
Short answer: yes, but not everything. The F1 Ultra's 20W fiber laser can cut thin metals—think 0.2mm stainless steel sheet, thin aluminum, or brass. For thicker stock, you'll need multiple passes and potentially compressed air assist. In our tests, clean cuts on 0.5mm steel required 3 passes with air assist at 400mm/min speed. Not fast, but doable.
What you can't do: cut thick steel plate, structural aluminum, or anything above 1mm reliably. The surprise wasn't the limit—it was that the F1 Ultra actually cut 0.8mm aluminum in a single pass with fiber laser at 200mm/min. Never expected that. Turns out the beam quality on this unit is pretty good for the price.
What Do You Cut Acrylic With?
Acrylic cutting is a diode laser specialty. With the F1 Ultra's 20W diode, you can cut 3-5mm acrylic cleanly at moderate speeds—around 10-15mm/s. Thicker acrylic (6-10mm) requires multiple passes. But here's the catch: clear acrylic cuts better than colored. The clear stuff transmits some diode wavelength, so you get a polished edge. Colored acrylic—especially red or black—tends to leave a frosted edge. It's a trade-off between speed and finish quality.
For engraved whiskey glasses, the diode laser is actually the better choice. The 455nm wavelength creates a nice frosted effect on glass without cracking. We tested 20 whiskey glasses for a client promo. At 80% power and 150mm/s, we got consistent results with minimal heat stress. The fiber laser would have cracked the glass—I know because we tried it. That was a $200 mistake in broken stock.
How Does the F1 Ultra Compare to the xtool S1 and P2?
xtool S1 Glass Engraving Settings vs F1 Ultra
The xtool S1 is a diode-only system. For glass engraving, the S1 at 10W diode gives similar results to the F1 Ultra's diode mode—both use 455nm wavelength, so settings transfer pretty directly. If you have S1 glass engraving settings at 80% power, 200mm/s, those work on the F1 Ultra's diode. The difference? The F1 Ultra adds fiber laser capability, so you can switch to metal engraving without swapping machines. But for glass only, the S1 is actually more cost-effective. Worth thinking about if you're doing laser engraving polyethylene or other specialized materials—you might not need both lasers.
xtool P2 Metal Engraving Settings vs F1 Ultra
The xtool P2 is a CO2 laser, not fiber. It's great for non-metals but can't touch metal. The F1 Ultra's fiber laser handles metal engraving natively. For xtool P2 metal engraving settings, there's no direct comparison because the P2 doesn't do metal. If you need metal engraving, the F1 Ultra is the better choice. But for large-format wood or acrylic, the P2's CO2 laser is faster and more efficient. We tested both side-by-side for a job: P2 cut 10mm acrylic in one pass at 20mm/s. F1 Ultra needed 3 passes on diode. Each tool has its lane.
How Do I Switch Between Fiber and Diode Modes?
This is one of those "thought it would be complicated, but it's actually simple" situations. The F1 Ultra has a physical lens chuck that you swap between fiber and diode modules. It takes maybe 10 seconds. The software (xTool Creative Space) automatically detects which module is installed and adjusts presets.
But here's the mistake I made: I assumed the software would handle everything. It doesn't. You still need to set appropriate power/speed for your material. The new xtool S1 glass engraving settings won't work for metal cutting. You have to manually switch profiles. That caught me on the first job—used diode settings on fiber module. Result: no mark at all. Took me 15 minutes to figure out the issue. Now I always double-check the active module in software.
Is the F1 Ultra Worth It for a Small Shop?
Let's talk dollars. The F1 Ultra retails around $1,800-$2,200 as of January 2025 (verify current pricing at xtool.com). That's not cheap for a hobbyist, but for a small business doing custom engraving it's actually competitive. Compare to buying separate diode ($500-800) and fiber ($1,800-2,500) machines. The F1 Ultra saves floor space and delivers decent results across materials.
But here's the thing: if you only need metal engraving, get a dedicated fiber laser. If you only need wood and acrylic, get a CO2 or diode. The dual-laser advantage is real when you're mixing materials daily. For our shop, it paid for itself in 4 months on custom orders involving both metal plaques and wooden awards. But that's our mix, not yours.
What's the Biggest Mistake People Make?
I see this all the time from new users: they assume the F1 Ultra can handle any material at any thickness. It can't. I rejected a batch of 500 engraved items from a vendor who advertised "unlimited material support" on their F1 Ultra listing. They tried cutting 3mm anodized aluminum with the diode laser. Wasted 20% of the stock before realizing the fiber laser was required. That customer ended up with delayed orders and a $3,000 refund.
The truth: the F1 Ultra is powerful for its size and price, but it's not a replacement for industrial systems. It'll cut your thin acrylic beautifully, engrave your whiskey glasses consistently, and handle metal marking with precision. But know your material limits. The vendor who says "this isn't our strength"—like polyethylene—earned my trust. I'd rather have a laser that admits its limits than one that overpromises and costs me a batch of product.
