Xtool F1 Ultra vs. Dedicated Glass Engravers: Which Laser Cutter Actually Handles Deep Engraving Better?

The Comparison: One Machine vs. One Purpose

I’ve reviewed over 200 laser engraving systems annually for the last three years. In our Q1 2024 quality audit alone, I rejected 12% of first deliveries from vendors because their material specs didn’t match our production standards. When it comes to the Xtool F1 Ultra – a compact 20W fiber & diode dual laser engraver – I get asked a version of the same question all the time: "Can this one machine replace a dedicated glass engraver?”

It’s not a simple yes or no. The honest comparison depends on what you value most: pure surface quality on glass or the versatility to mark deep into metals. Let’s set the framework.

The Contenders

• Xtool F1 Ultra: Dual-source (20W fiber + diode) with rotary attachment, air assist, integrated safety enclosure. Capable of both deep metal engraving and glass surface marking.
• Dedicated Glass Engraver: Typically a CO2 or diode system optimized for transparent materials, with varied power levels (30W-60W), sometimes with a rotary attachment, but strictly for non-metal surfaces.

To be fair, dedicated glass engravers have been the standard for years. But standards change — and sometimes not in ways you’d expect.

Dimension 1: Deep Engraving (Glass & Metal)

I have mixed feelings about deep engraving on glass with a fiber laser. On one hand, the 20W fiber source on the Xtool F1 Ultra is a phenomenal tool for deep engraving metals — think serial numbers on steel or aluminum. I’ve seen it produce consistent depths of 0.2mm to 0.5mm in a single pass with proper settings. On the other hand, deep engraving on glass is a completely different beast.

Glass is brittle. It shatters under thermal stress. The standard industry approach for deep glass engraving — typically 0.1mm to 0.3mm depth — uses a CO2 laser because its wavelength is absorbed better by transparent materials, producing clean, frosted marks.

Here’s something vendors won’t tell you: The xTool F1 Ultra’s diode laser (its 20W blue diode) can mark glass, but “deep” is relative. At full power with air assist, you’ll get a surface etch — maybe 0.1mm depth — that looks clean but won’t survive thousands of dishwasher cycles. Meanwhile, its fiber laser can mark glass, but the result is often a micro-cracked surface that looks distressed rather than polished. For deep engraving on glass (think wine glasses or tumblers), a dedicated CO2 machine still delivers better depth-to-quality ratio.

But here’s the twist: If your “deep engraving” means cutting into stainless steel badges or aluminum plaques, the F1 Ultra wins hands-down. Its fiber laser can achieve 0.3mm+ depths in steel with repeatable accuracy. A 40W CO2 glass engraver couldn’t touch that. The choice depends on your material mix.

Dimension 2: Glass Engraving Settings & Surface Quality

This is where the dedicated glass engraver typically shines. The standard approach for a CO2 on glass is a single pass at 80% power, 150mm/s, with air assist off (to avoid thermal shock). The result: a perfectly frosted, opaque mark that’s indistinguishable from sandblasted glass.

With the Xtool F1 Ultra, you’re dealing with two very different settings profiles:

• Diode Laser on Glass: Use minimum power (10-20%), speed at 200-300mm/s, with air assist on to cool the surface. You’ll get a light frosted mark — fine for logos or dates. But feathering around edges is more visible.
• Fiber Laser on Glass (with marking solution): Some operators apply a carbon-based marking spray (like CerMark). At 30-40% power, 200mm/s, the fiber laser bonds a dark mark into glass. It’s permanent — but it changes the color (black/grey), not a true frosted white.

In my experience, trying to get a pure white frosted mark on clear glass with the F1 Ultra’s diode is possible but inconsistent. It works beautifully on borosilicate glass (Pyrex) but struggles with soda-lime (most wine glasses). After the third test batch, I was ready to give up on achieving uniform results. What finally helped was accepting that the “ideal” settings are a compromise: you sacrifice some frosting quality for the convenience of a single-machine workflow.

Don’t hold me to this exactly, but I’d estimate the F1 Ultra achieves about 70-80% of the surface quality of a dedicated CO2 engraver on standard glass. On metals or coated glass, it’s closer to 95%.

Dimension 3: Preparing Images for Engraving

Here’s something both machines handle similarly, but the F1 Ultra introduces a new complexity. Standard dedicated glass engravers typically expect a grayscale, 300 DPI PNG or vector path (SVG/DXF). The process is well-documented.

The most frustrating part of image prep for the F1 Ultra: You’re optimizing for two different lasers at once. A high-contrast image that works perfectly for the fiber laser (lots of black areas for power) can look dull on glass with the diode. I’ve found that a dedicated “glass preset” in LightBurn with 50% brightness reduction and 60% contrast boost gives the best results. For the fiber laser, no such adjustment is needed — standard monochrome dithering works fine.

The reality: if you’re switching between materials frequently, you’ll spend more time adjusting image settings than a dedicated machine operator would. That’s the hidden cost of versatility.

Bonus Comparison: Laser Cleaning

Neither the F1 Ultra nor a standard CO2 glass engraver is marketed as a laser cleaner. But I’ve noticed the F1 Ultra’s fiber laser at 100% power can strip anodized coatings off aluminum — a form of cleaning. A CO2 can’t do that. It’s not a substitute for a real pulsed fiber laser (like a 100W MOPA), but it’s a useful fringe capability. For surface rust on thin steel, it’ll remove a thin layer (0.05mm) without burning through. Not bad for a machine that also engraves glass.

So, What Should You Choose?

Here’s my honest take after reviewing both setups under production conditions:

Choose the Xtool F1 Ultra if:

• You need deep engraving on metals (steel, aluminum, brass).
• You’re a small shop or maker who can’t justify two machines.
• You engrave glass occasionally, not as your primary product line.
• You value compact size and integrated features (rotary, air assist).
• You’re okay with 70-80% quality on glass for the sake of versatility.

Choose a dedicated glass engraver if:

• Glass is 90%+ of your work.
• You need pristine white frosted marks every time (e.g., wine glasses for events).
• You’re doing deep engraving on glass (0.3mm+ depth).
• You have the budget and space for a second machine.
• You’re not interested in processing metals at all.

From a total cost perspective: The Xtool F1 Ultra’s price (roughly $2,500-3,000 depending on kit) is a fraction of buying a good fiber engraver (Xtool’s own F1 Pro is $1,500+ for the fiber-only head) plus a dedicated CO2 glass engraver (another $2,000+). If you can live with the glass quality compromise, the hybrid approach saves you significant capital. But if your brand depends on flawless glass etching, that compromise might cost you a client relationship — and that’s a bigger expense than any machine.

The decision comes down to your material mix. For most B2B operators working with mixed job runs — metal badges one day, glass awards the next — the Xtool F1 Ultra is probably the better choice. It’s not perfect, but it’s remarkably capable for a single unit. Just don’t expect it to replace a dedicated glass engraver for specialized work. That’s a standard I’m not willing to lower.