Let me start with a confession. I'm the office administrator for a 40-person product design company. I manage all equipment and supply ordering—roughly $180K annually across 15 vendors—and I report to both operations and finance. So when I say I spent three weeks deciding whether the xTool F1 Ultra 20W fiber & diode laser engraver was a real purchase for us or just a flagship-shaped impulse buy, I mean I did the actual spreadsheet math.
The answer ended up being “yes, but it depends”—which is honestly the same conclusion you'll find if you search for xTool F1 Ultra glass engraving settings and read fourteen forum threads. Everyone's settings work perfectly for what that person is doing. The problem is, you're probably not doing the same thing they're doing.
So instead of dropping a settings table on you like that's the whole story, I'm going to walk through the three scenarios I see most often from people buying a laser engraver kit like this. I'll share the settings that worked in our shop for each one, and then the simple questions that tell you which scenario you belong to.
Quick scope note: my experience is based on one F1 Ultra that our prototyping team has been running since November 2024, mostly for glassware samples, photo engravings, and small metal parts. If you're running a full production line, your results and needs will probably differ—which is kind of the point here.
The Machine in One Paragraph
The xTool F1 Ultra is basically two lasers in one housing: a 20W fiber laser for metals and certain plastics, and a 20W diode laser for wood, leather, acrylic, and glass. You switch between them by changing the laser head module. The machine ships with a protective enclosure; with the lid open, a 20W laser is Class 4 and can damage your eyes instantly, so don't skip safety glasses. The key detail for this article: the fiber laser isn't used for clear glass. A 1064nm beam passes straight through glass like it's not there. The diode laser is what does glass engraving. So when you see “dual laser” in the product name, understand that glass work happens on the diode side only.
The Three Scenarios
Every person I've talked to about this machine falls into one of three buckets:
- Scenario A: You're producing personalized glassware as a business. Tumblers, bottles, wine glasses, corporate gifts. Volume is the name of the game.
- Scenario B: You're engraving pictures on glass. Portraits, wedding photos, custom keepsakes. You care more about detail than throughput.
- Scenario C: You need a general-purpose workshop tool. A bit of wood, metal, acrylic, leather, and glass. Flexibility is the priority.
The F1 Ultra can technically handle all three. But whether it's the smart purchase—and how you configure it—changes a lot depending on which bucket you're in.
Scenario A: Glassware Production
This is the tumbler-and-wine-glass crowd. Customers order 50 personalized beer mugs for a wedding, or 20 corporate gifts with a logo, and the job needs to repeat consistently.
The F1 Ultra works well here, but honestly, the laser isn't the reason. The accessory ecosystem is. The rotary attachment is not optional for cylindrical tumblers. We skipped it to save about $200 on the initial order (back in December 2024), and that choice looked smart right up until we tried to engrave a stainless steel bottle by hand-rotating it. One ruined sample later, we paid for expedited shipping on the rotary. Net cost: about $350 plus the week of delay—and the awkward conversation with our VP about why the “optional” accessory was, in fact, required. That's a classic I've seen before in purchasing: save a little on the add-on, pay more on the reorder.
For production glassware, the settings that worked for us:
- Apply a glass marking paste or dry moly coating before etching.
- Diode laser power: 50–70%.
- Speed: 1000–1500 mm/min for logos; drop to 600–800 for fine text.
- Resolution: 5 lines/mm for uniform fills; 7 lines/mm for fine details viewed close-up.
- Use air assist—smoke residue can darken the etch and ruin the frosting effect.
Here's the counterintuitive part: in production, don't chase the fastest speed. Faster speeds create shallower, less consistent etches across a batch, which means more scrap. Running at 80% of max speed with a single clean pass gives you higher effective throughput across 50 units than a blazing-fast setting where you have to redo 9 out of 50. The most expensive mistake in engraving is rework.
Scenario B: Picture Engraving on Glass
This is the question I see most in forums: “how do I get good picture engraving on glass?” The F1 Ultra can do it beautifully, but the process is more involved than most YouTube videos show.
Our first test on clear glass was a disaster. I told the team the machine could “handle glass.” They heard “we can push a button and a photo will appear.” Same words, totally different expectations—a communication gap that cost us a week of testing. The truth is, the diode laser on bare, untreated clear glass at default settings produces a faint, patchy mark. Not a picture. A smudge.
What makes photo engraving work:
- Clean the glass perfectly. We use glass cleaner, then an isopropyl wipe. Fingerprints show up as ghost smears in the etch.
- Use a marking agent. This is the step everyone skips. Dry moly powder or a commercial glass-marking paste, applied evenly across the engraving area. It absorbs the diode beam and turns it into a crisp frost. Without it, you're not getting a clean image.
- Prep the image. Convert to black-and-white grayscale. For source quality, follow standard print resolution: 300 DPI at final size is the minimum you should accept; lower-res images engrave noticeably worse.
- Turn on dithering. Floyd-Steinberg mode reproduces tones much better than flat grayscale, which tends to burn dark areas into a solid blob.
- Settings: 30–50% power, 400–800 mm/min, 1–2 passes, 5–7 lines/mm. Always test on a corner of the same glass type first.
One more thing to be transparent about: photo engraving on glass is slow. A 4×4-inch portrait took us 15–20 minutes per piece. If you're thinking about mass-producing photo glass items, that's not Scenario B anymore—that's production, and the cost math changes completely.
Also, and this might sound odd coming from someone who just spent this whole article praising the machine: if glass photo engraving is your only use case, you don't need the F1 Ultra. A cheaper diode-only laser engraver kit, paired with the same marking agent and settings, produces comparable photo results on glass. The F1 Ultra earns its price when you also need the fiber side for metals. If you're not marking metal, spend the difference on a better rotary and a nicer air assist.
Scenario C: General Workshop / Multi-Material Tool
This is the bucket most professional buyers—office administrators, workshop leads, facilities managers—actually land in. You need a metal dog tag engraved this morning, a wooden sign by lunch, an acrylic panel this afternoon, and maybe a glass gift by Friday. You don't want to maintain two machines.
The F1 Ultra genuinely shines here. The dual-head design means you cover both metal and organic materials from one work area, and the software handles material presets well enough that switching isn't a chore.
But here's the transparency part. Back when I took over purchasing in 2020, I learned to ask “what's NOT included?” before asking “what's the price?” That question matters with this machine. The base price covers the laser and the enclosure. The rotary, the riser, the air assist, and consumables like marking paste all cost extra. None of this is hidden—but it's not in the base price, either. If you quote the machine alone to your finance team and then submit a second requisition for accessories two weeks later, that's on you, not the vendor.
My advice for Scenario C: buy the machine plus the rotary and air assist from day one; skip the rest. The rotary and air assist are core. Everything else—risers, extra enclosures, passthrough upgrades—can wait until you've actually needed them.
How To Know Which Scenario You're In
Use the same three questions we use before buying any equipment:
- How many pieces per week? More than 20 recurring pieces → Scenario A. Prioritize accessories and repeatable settings over headline specs.
- What's the deliverable? Detailed one-off keepsakes → Scenario B. Invest time in image prep and marking agents, not in a bigger machine.
- Who's going to use it, and for what? A team, workshop, or multi-purpose small business → Scenario C. Don't under-buy the accessories, but don't buy accessories that only solve problems you don't have.
Simple Laser Cutter Projects to Start
If you've just unboxed it, these three projects are worth starting with:
- Glass coasters with a logo (marking agent + diode laser). A great first calibration job for glass.
- Anodized aluminum keychains with a company name (fiber laser). Fast, clean, and gives you the experience of the fiber side, which behaves completely differently.
- Wooden tags with cut-out shapes (diode laser). Learn cut-through settings on 2–3 mm plywood and how the kerf affects fit.
These map nicely to the three scenarios: production consistency, photo detail, and multi-material flexibility. And if the settings go wrong, you've wasted ten cents and a lunch break, not a client order.
Final Thoughts
The xTool F1 Ultra is a genuinely capable machine, and I approved the purchase for our company without regret. But as someone who spends a budget that isn't theirs, I'd say this: match the machine to your scenario, not the other way around.
For glass engraving specifically, the settings are just part of the story. The other part is the prep work—marking agents, cleaning, image dithering, and a patient eye on speed. If you do that homework, the F1 Ultra will produce glass engravings that shock people. If you skip it, you'll question why you ever bought a laser engraver kit in the first place.
Pick your scenario, set your expectations, and start with the simplest project you can. The settings will follow.
