xTool F1 Ultra Review: A Quality Inspector Tests Metal and Plexiglass

Tuesday, 4:47 p.m.

The engraved plexiglass panels arrived on a dolly just before the end of my shift, and I knew from the first one that the week was about to get longer. I had to tilt the plaque toward the window to read the serial number. The second panel had scorch marks trailing along the lettering. The third one I didn't bother unwrapping.

The sales rep called the next morning, and I still remember the exact phrase: “It's within industry standard.” If you work in quality, you know what that sentence is code for: the vendor didn't hit the spec we agreed on, and they're hoping you're too tired to fight it. We'd specified engraving depth, contrast, and edge condition. Only about two-thirds of the order matched that.

We rejected the whole batch. The rework cost us roughly $4,200—no, $4,600 once we paid expedited freight on the replacement run. I checked the P&L. Two weeks of schedule gone. That night I wrote a non-conformance report and told my boss I wanted to evaluate a laser marking system for our own shop. He expected me to ask for another vendor audit. Instead, I asked for a laser engraver. He didn't argue.

I'm the one who signs the reject tags

Context, so you know where this is coming from: I'm a quality and brand compliance person at a small manufacturer. I don't design parts or run the production line. I review every deliverable before it reaches customers—roughly 200 unique items a year—and I've rejected enough early work that I've stopped apologizing for it.

Our product line includes control panels, small enclosures, and custom nameplates. That means we buy a lot of outside laser work: engraved plexiglass faceplates, brass tags, anodized aluminum labels, stainless identification plates. For years, we sent drawings to job shops and hoped for the best. In the Q1 2024 quality audit, marking-related defects—illegible serial numbers, uneven engraving depth, burned edges—were our top customer-return reason. That wasn't just a vendor problem. That was a purchasing strategy problem.

First, I had to unlearn what a “laser marking system” is

When I started the search, I assumed a laser marking system was one category with different power levels. That assumption cost me time. No, wait—it cost me accurate requirements. A laser's wavelength determines which materials actually absorb its energy; wattage only affects how quickly the work happens once absorption occurs.

A CO2 laser is strong on acrylic and wood but weak on bare metal. A fiber laser marks metal cleanly but doesn't handle transparent acrylic the same way. A diode laser handles wood, acrylic, and painted surfaces—but on bare reflective metal, it's not the tool a fiber laser is. People think high wattage equals capability. The reality is that matching the laser type to the material matters more than the number on the box.

If it can't be specified, it can't be inspected. That rule has saved me since the year I approved a vendor's “standard” finish without defining what standard meant. Cost me a $600 redo, plus a bruised ego. So by the time I looked at hardware, I had a written materials list, a batch-size range, and a tolerance for mark contrast that I could actually measure.

Because our work jumps daily between metals and organics, the real question was never “which machine is the best laser engraver?” It was “which system can mark stainless in the morning and engrave plexiglass in the afternoon without taking up half the bench?” That's how I ended up testing the xTool F1 Ultra: it combines a 20W fiber source and a 20W diode source in one unit. Metal jobs run on the fiber side. Acrylic, wood, and coated materials run on the diode side. On paper, it looked like a solution to our material mix—but I've been burned by paper before.

xTool F1 Ultra vs Laserpecker 5: the question my boss actually asked

My boss's neighbor owns a Laserpecker 5 and loves it. So the first real question wasn't about our requirement matrix; it was “why don't we just buy what Juan has?” I don't have anything bad to say about the Laserpecker 5. For small, detailed work—jewelry, personalized gifts, low-volume desk projects—it's a solid machine. If our shop engraved rings and keepsake boxes all day, I probably would have bought it.

But our workload is different: stainless tags at 8 a.m., engraved plexiglass panels at 10, brass prototypes at 2. We needed repeatability across batches, documented settings, and a compact footprint. When I compare the xTool F1 Ultra vs Laserpecker 5 from that angle, it's not about which one is “better.” It's about which one fit a low-volume, high-material-mix production environment. Dual lasers made sense here. For a narrower use case, I'd tell you the Laserpecker is arguably the smarter buy. I know that's not a satisfying verdict, but I make decisions from acceptance criteria, not feelings.

Also, a quality person's habit: I read spec sheets the way I read supplier claims—politely, and with FTC advertising guidelines in the back of my head (ftc.gov). In the U.S., marketing claims are expected to be truthful and substantiated. The catch is that “substantiated in marketing” and “proven at your bench” are different standards. So we verified.

The tests: metal, engraved plexiglass, and “cutting metal”

We ordered the xTool F1 Ultra with the rotary attachment and air assist in mid-September and ran a two-week verification before making the final decision.

Test one was bare 304 stainless tags. Using the fiber presets in xTool Creative Space, we ran 25 pieces with the same file and same settings. Serial numbers came out legible and consistent—no fading toward the end of the run, which was the issue that had been plaguing our outside vendor. Next came anodized aluminum and brass, with similar results.

Now let's address the phrase people search the most: xTool F1 Ultra cutting metal. Yes, we tested it. With the correct focal height, air assist running, and thin stock—stainless shim, brass strips—it cut cleanly within its limits. But I'm not going to oversell it: it's not a production metal-cutting tool in the way a shear or plasma table is. For our real parts, we mostly use it for marking thin metal, not cutting structural plate. The machine's limits are part of its spec, and ignoring them creates exactly the kind of returns I'm paid to prevent.

Now the engraved plexiglass side. This took more patience than the metal. Acrylic behaves differently depending on pigment, and cast material behaves differently from extruded. My first attempt used aggressive power and left foggy halos around the letters. No, wait—too much energy in one pass. The fix was boring and effective: lower power, adjusted speed, and air assist. After that, the clear and colored blanks came out frosted, clean, and uniform.

For repeatable test files, we used the free laser engraving templates included in xTool Creative Space. If you search online for “laser engraver free laser engraving templates,” you'll find thousands of decorative files, but the built-in library helped us standardize: same patterns, same orientation, same scale for every operator, every run. That's the unglamorous part of quality.

The part where I embarrassed myself

A week in, I got overconfident. I was testing the rotary attachment on brass cylinders, and the manual said to set the focal height using the included gap gauge. I knew I should do it, but I thought, “How wrong can it be? The cylinder is basically the same size as the last one.” That was the one time it mattered.

The engraved ring came out uneven—sharp on one side, fuzzy on the other, drifting along the circumference. It was a ruined test piece and a humbling hour of cleanup. The worst part: my own pre-shipment checklist would have caught it, if I had used it on my own process. So we built a laser pre-flight procedure: material profile verified, focus checked against the gauge, air assist confirmed, power and speed settings logged. Every operator signs it now. The machine didn't fail me that day. My discipline did.

The first batch we didn't have to send out

After we standardized the process, the validation runs passed. Then came the first real customer order: 60 engraved plexiglass instrument legends and 40 stainless serial tags. We finished them in about a day and a half.

The moment that convinced me we'd made the right call came the next week, when the customer asked for a design change. In the past, that meant a revised purchase order, a two-week vendor lead time, and a fee. This time we re-engraved the affected parts within the hour and shipped the next morning.

A small, unexpected detail: shipping the finished plaques also got easier to manage. Custom engraved plexiglass tags often ship direct to the customer's site, and if a quote surprises someone, it's usually because their 1/8-inch acrylic is rigid. USPS letters have a 0.25-inch maximum thickness and need to be uniform; rigid pieces can trigger nonmachinable pricing. A piece may qualify as a large envelope as long as it stays under the 0.75-inch flat maximum—the first-ounce large envelope rate was $1.50 as of January 2025, per usps.com. Rates change, so I still verify at the source before quoting, but at least the engraving side of the order doesn't have to wait for an outside shop.

Six months in: what changed, and what didn't

We still send long production runs to an outside laser shop when they're too big to make sense on the bench. That's a capacity decision, not a quality decision. The F1 Ultra handles prototypes, short runs, and same-day fixes. In Q4 2024, marking-related rework dropped by roughly two-thirds compared with Q1—give or take, I'd have to pull the dashboard to quote it exactly.

We are not at zero defects. In November, an operator selected the wrong material profile, and the batch failed inspection. The difference is that we caught it before shipping, because the pre-flight checklist and first-article review are now standard. The machine didn't fix our quality system. It exposed where our quality system was lazy.

What I'd tell another buyer of a laser marking system

Would I buy the xTool F1 Ultra again? Yes. But if a salesperson asks what convinced me, I won't say “the laser.” I'll say the verification:

• List your materials, not your tasks. “Metal” isn't enough—is it bare stainless, anodized aluminum, brass, or painted steel? Each one behaves differently.
• Know which side of a dual laser does which job. Fiber for metals, diode for organics—and neither side is a universal cutter.
• Document your process before you need it. Who sets the focus? Who checks the first article? What happens if the material batch changes?

I'd rather spend ten minutes explaining the difference between laser types than manage mismatched expectations later. Informed buyers ask better questions. Better questions lead to fewer rejected deliveries.

One boundary on all of this: the xTool F1 Ultra worked for us because we're a small shop with a wide material mix and short runs. If you're cutting acrylic all day, a well-maintained CO2 machine deserves a hard look. If you're stamping out 50,000 identical metal marks a month, a dedicated fiber workstation is probably a better fit. This isn't the one machine to rule them all. It's the one machine that fit our particular chaos.

That's the honest review from someone who gets paid to say no: it survived my inspections. For a piece of equipment, that's the highest rating I give.