Can the xtool S1 Engrave Metal? Yes — Here's What It Actually Costs

Here's an opinion you won't find in the brochure: the price of the xtool S1 is the least important number in the buying decision. What actually matters is how many extra dollar signs appear before the machine produces a finished part you can hand to an internal client.

I'm an office administrator for a 42-person manufacturing company. I manage roughly $180,000 in annual purchasing across more than a dozen vendors, and I report to both operations and finance. I took over this job in 2020, and the first thing I learned is that the vendor with the lowest headline price is often the one who claws it back on page three of the invoice.

That's the filter I applied when our marketing manager asked me to source a laser engraver. The search term that keeps coming up — "can xtool S1 engrave metal" — gets a complicated yes. But the better question, the one that doesn't show up in autocomplete, is what the xtool S1 40W diode laser really costs once you buy the machine, the module, the air assist, and the materials that behave themselves. That's the honest math, and here it is.

The "Can xtool S1 Engrave Metal?" Answer: Yes, With an Asterisk

Can the xtool S1 engrave metal? Yes, with the 40W module, on anodized aluminum, coated stainless steel, and painted surfaces it makes clean, permanent marks. On bare metals like uncoated copper or untreated aluminum, the result is somewhere between "not great" and "why did I even try."

Here's what I respect about xTool: they state this limitation in their own spec documentation. They don't hide it behind a chatbot. The S1 is a diode laser, and the 40W module is the strongest diode option for this machine. It is not a fiber laser, so expecting it to deep-engrave a raw steel block is expecting physics to bend. (Not that marketing has never tried to bend physics before.)

Honestly, I'm not sure why some resellers bury this in the fine print. My best guess is that "engraves metal" gets more clicks than "engraves coated metal." But I've been burned by vague vendor language enough times to know that the limitation is the product. A vendor who tells you the limitation before you hand over the credit card is the vendor who'll also show you the full total before you order.

The xtool S1 40W Diode Laser: What the Price Never Includes

Let's talk real numbers. The xtool S1's published pricing in early 2025 was roughly $1,200 for the 20W unit and around $1,800–2,000 for the 40W version on xtool.com (they run promos constantly, so verify current rates). The 40W module matters: it's the difference between marking a coated metal tag and just giving the coating a warm stare.

Then you go down the accessory list. Air assist is not optional if you want clean cuts on acrylic — figure $100–150 if it's not already in the bundle. The rotary attachment, which you'll want the first time someone requests a logo on a tumbler or a cylindrical part, is another $150–200. A honeycomb worktable to keep burn marks off the underside of your stock: $50–100. Fume handling? Add more.

I had mixed feelings about this. On one hand, the "add-ons after promo price" pattern is the oldest trick in the procurement playbook. On the other, xTool lists every one of these accessories on the product page, with prices, no "schedule a call to unlock the real cost" nonsense. That's a feature. During our 2024 vendor consolidation project, the supplier who sent a complete line-item price list won the larger contract; the one who said "we'll sort out the fees later" got a polite reply and no PO. Transparency isn't just a warm feeling — it's how procurement makes decisions.

When our finance team asked for the total first-year cost, I gave them the machine, the air assist, the rotary, a stack of cast acrylic, and 20 hours of my own labor learning the software. That full number is the number they approved. Looking back, I should have budgeted for the air assist from the start — I initially assumed it was an upsell. It's not. It's the difference between clean cuts and charred edges.

Acrylic for Laser Engraving: A Two-Paragraph Buyer's Guide

Searching "acrylic for laser engraving" taught me more about manufacturing chemistry than my day job ever required. Here's the condensed version: cast acrylic engraves with a clean, frosty white mark. Extruded acrylic melts more, engraves with less contrast, but cuts faster once you dial in the settings. These are different materials, and the laser knows the difference.

The first acrylic supplier I contacted said their sheet "works with all lasers." No mention of cast or extruded. The second supplier's product page said "cast acrylic — recommended for engraving, cut at slower speeds." The second supplier got a roughly 15% higher price from me and won the PO. (Surprise, surprise: the transparent quote won.) If a seller can't tell you whether it's cast or extruded, assume they don't know — and buy from someone who does.

What My Search for "Erbium Laser Machine" Taught Me

I need to confess something: my research history for this project looks like a robot having a stroke. At one point I had browser tabs open comparing an "erbium laser machine" with a diode laser before I realized erbium lasers belong in dental offices and dermatology clinics, not on a workbench cutting 3mm acrylic. I've never fully understood why the medical and industrial laser worlds share so much vocabulary while serving entirely different buyers. If someone has insight, I'd love to hear it.

The broader lesson: learn the category before you buy. Diode lasers like the xtool S1 are the versatile entry point for small-batch work. CO₂ lasers cut wood and acrylic faster at scale. Fiber lasers rule metal marking. If your search for "erbium laser machine" comes from wanting to engrave an aluminum water bottle, stop and recalibrate. That education cost me about a week of evenings, and it's a real line item in the cost of a first laser purchase.

Acrylic Laser Cutting Files: Free Files Are Fine — Check the Specs

On the software side, I searched "acrylic laser cutting files" with low expectations and found plenty. xTool's XCS software includes a library of starter files, and community libraries are full of acrylic templates. The catch: a file designed for 3mm acrylic won't automatically suit your 5mm stock, and settings that work on a 20W machine won't match a 40W module.

The boring truth of laser work is that the machine is honest and the file is honest, but only if you verify the specs line up. As an administrator, I think of it the same way I think of mismatched purchase orders: you catch the mismatch early, or you eat the rework later.

The Objection: "Why Not a CO₂ Laser?"

You might be thinking: a CO₂ laser cuts acrylic faster and handles thicker material. You're right. If we were running a high-volume acrylic fabrication shop, I'd be writing a very different review. But we're a small manufacturer with quarterly batch jobs — a few dozen plaques, keychains, and tags. The xtool S1's 40W diode laser fits on a side table, runs on standard power, and didn't require a facilities request.

The upside was bringing a job that previously cost us $60–90 per order in outsourced engraving back in-house. The risk was a $2,500 system sitting idle after the novelty faded. I kept asking myself: is a two-day turnaround dropping to two hours worth the learning curve? It is, but the learning curve is real. It took a weekend of test cuts to produce something our marketing manager called "good enough." The machine didn't lie to me about what it could do, and xTool didn't hide the costs behind a sales call. That's exactly why it got the PO.

So, would I buy it again? Yes. Not because the S1 is perfect — the enclosure is bulky, the software takes patience, and the accessory ecosystem gets pricey. But I'd rather buy from a seller who shows the full picture upfront than one who sells the dream and invoices the reality. In my line of work, that transparency is the rarest spec of all.