The xTool F2 Ultra UV Laser is one of the most advanced compact UV laser engravers available today. With a 5W true UV laser (355nm), ultra-high precision, blazing galvo speeds, and support for glass inner engraving, it’s engineered for professionals who need micro-detail accuracy without sacrificing speed or versatility.
Table of Contents
This guide breaks down everything you need to know, including supported materials, UV advantages, accessories, maintenance, and how it compares to xTool’s other machines.
What is the xTool F2 Ultra UV Laser?
The xTool F2 Ultra UV is a high-precision, high-speed UV laser engraver designed for extremely fine surface marking and inner engraving on:
- Glass
- Crystal
- Plastics (ABS, PVC, silicone, acrylic)
- Ceramics
- Metals
- Leather
- PCBs
- Stone
- Wood (clean, non-burned finishes)
The 355nm UV wavelength produces cold light, allowing engraving with almost zero heat distortion — something fiber, diode, and CO₂ machines cannot match.
Key Features of the xTool F2 Ultra UV
5W Dual-Wavelength UV Laser (355nm + 405nm)
This UV laser produces 0.02–0.03mm micro-precision engraving, perfect for:
- Jewelry patterns
- Micro text
- Electronics
- PCB marking
- Barcodes & QR codes
- 3D inner glass engraving
Ultra-Fast Galvo Engraving – Up to 15,000 mm/s
Industrial-grade speed lets you batch engrave products quickly and consistently.
Autofocus + LiDAR Ranging
The F2 Ultra UV detects material height automatically, eliminating manual focus.
Dual 48MP Cameras
Accurate placement, live preview, and extremely precise positioning.
Inner Glass Engraving
One of the biggest advantages — UV can engrave inside glass cubes, plaques, crystal awards, and more.
Compact, Portable & Fully Enclosed
Great for:
- Studios
- Jewelry workshops
- Mobile engraving booths
- Retail personalization setups
- Events & craft fairs
Enhanced Safety
- Class 1 or Class 4 variants
- Enclosed UV shielding
- Emergency stop (Class 4)
- Flame-retardant materials
- Compatible with air purification systems
What’s Included in the Inner Engraving Pack?
This pack enables accurate, pre-calibrated inner glass engraving:
- 1 × Inner engraving lens
- 1 × Riser
- 1 × K9 glass block
- 3 × calibration cards
Important:
The F2 Ultra UV lenses are NOT compatible with the F2 Ultra (fiber/diode).
They are different machines with different light sources and interfaces.
xTool F2 Ultra UV Supported Materials & Applications
Material Compatibility Chart
Engraving
Material | F2 Ultra UV Performance |
|---|---|
Glass (surface + inner) | Excellent |
Crystal | Excellent |
Acrylic (no melting) | Excellent |
Plastics (ABS, PP, PET, etc.) | Excellent |
Wood | Clean, no burn |
Leather | No burnt edges |
Metals | Great for marking |
Ceramics | Excellent |
Stone | Good |
Embossing
- Glass
- Acrylic
- Wood
- Silicone
- Ceramics
(Metal embossing not supported)
General
- Dimensions: 294×429×520 mm
- Weight: 22.5 kg
- Laser Safety: Class 1 or Class 4
- Max Power Input: 348W
xTool F2 Ultra UV Supported Accessories
- RA3 & RA2 Pro Rotary
- Auto Streamline™ Conveyor
- Pedal / Button Switch
- SafetyPro™ AP2 purifier
- SafetyPro™ IF2 inline fan
- Slatted panel for cutting
- L-shaped batch positioning tools
Why the xTool F2 Ultra UV Is The Best Laser For Glass Engraving?
Glass engraving is one of the most difficult tasks for laser machines—especially if you want clean, crisp, non-chipped results or true 3D inner glass engraving. Most CO₂ and diode lasers can only scratch or frost the surface, often leaving cloudy finishes or cracked edges.
The xTool F2 Ultra UV, however, is engineered specifically for precision optical work. Its 355 nm ultraviolet wavelength, industrial-grade galvo system, and advanced depth-control technology make it the most capable desktop laser for both surface and internal 3D glass engraving.
Here’s why it stands above every other laser in its class.
UV Wavelength (355 nm) Is Perfect for Transparent Materials
UV lasers behave very differently from CO₂ or diode lasers:
CO₂ laser (10,600 nm):
- Mostly absorbed by the surface of glass
- Causes surface flaking, chips, and cracks
- Cannot engrave inside glass
Diode laser (450 nm):
- Reflects off glass
- Requires coatings or hacks
- Not suitable for inner engraving
xTool F2 Ultra UV (355 nm):
- Passes through glass and focuses energy inside the material
- Produces ultra-fine micro-fracture points
- Allows beautiful, floating 3D internal engravings
The UV wavelength is the key that makes the F2 Ultra UV uniquely capable for crystal and glass work.
How 3D Inner Glass Engraving Works with the xTool F2 Ultra UV (Step-by-Step)
One of the biggest advantages of the F2 Ultra UV is that inner engraving does not require manual focusing.
Here’s the workflow:
1. Install the Inner Engraving Lens
The machine comes with a dedicated internal engraving lens that must be swapped before beginning.
2. Add the Inner Engraving Riser
This raises your glass block to the correct operating height.
3. Place the Glass on the Platform
No need for additional fixtures for standard cubes—just ensure the block is clean and dust-free.
4. Enter Glass Dimensions in xTool Studio
You simply input:
- Width
- Height
- Depth
- Placement
The system calculates focal points automatically.
5. Import a 2D or 3D Model
Supported formats include:
- 2D: SVG, PNG, JPG, BMP
- 3D: STL, OBJ, AMF, PLY, GLB, 3MF
The machine can engrave floating 2D images or full 3D internal models.
6. Start the Engraving
The F2 Ultra UV fires its laser inside the glass, creating micro-points throughout the object to form the final 3D design.
Tips for the Best 3D Glass Engraving Results
Use K9 crystal
K9 offers high clarity and minimal impurities—perfect for internal fracturing.
Degrease and dust the glass before engraving
Smudges cause haze inside the engraving.
Reduce model density for small blocks
Overly dense points can make engravings look cloudy.
Avoid engraving near edges
Leave at least 3–5 mm margin inside the glass to prevent chipping.
Use xTool’s calibration cards
These help ensure depth accuracy when switching between inner and surface modes.
xTool F2 Ultra UV Maintenance Tips (Recommended)
To keep your UV laser performing at its peak:
1. Clean the field lens and mirrors weekly
Use absolute ethanol + lint-free wipes.
Never touch optics directly.
2. Keep the fan and air path clean
UV systems create fine debris — airflow is critical.
3. Run the machine at least once per month
Prevents moisture buildup internally.
4. Do not mix lenses between machines
UV lenses ≠ Fiber/diode lenses.
5. Use correct glass types
- ✔ K9 crystal
- ✖ Tempered
- ✖ Laminated
- ✖ Tinted
Comparison Chart (F2 Ultra UV vs F2 Ultra vs F1 Ultra)
Feature | xTool F2 Ultra UV | xTool F2 Ultra | xTool F1 Ultra |
|---|---|---|---|
Laser Power | 5W UV (355 nm) | 60W MOPA Fiber + 40W Diode | 20W Fiber + 20W Diode |
Spot Size | 0.02–0.03 mm | 0.03–0.06 mm | 0.03–0.06 mm |
Max Speed | 15,000 mm/s | 15,000 mm/s | 10,000 mm/s |
Working Area | 200×200 mm | 220×220 mm | 220×220 mm |
Inner Glass Engraving | Yes | No | No |
Metal Engraving | Excellent (fine marking) | Best (deep + color) | Good |
Metal Cutting | No | Thin sheet | Thin Sheet |
Acrylic Cutting | (cold) | (diode) | Light |
Plastics | Best | Good | Good |
Wood | Clean, precise | Best for thick cuts | Light cutting |
Rotary Support | RA3/RA2 Pro | RA3/RA2 Pro | RA2 Pro |
Software | xTool Studio | Studio + LightBurn | Studio + LightBurn |
Use Case | Precision detail & glass | Heavy metal & thick cutting | Portable mixed-material engraver |
Price |
Buyers Guide — Which xTool Machine Should You Choose?
Choose xTool F2 Ultra UV if you want:
- Ultra-fine detail
- Glass surface and inner engraving
- Plastics/acrylic with no melting
- High-speed production marking
Choose xTool F2 Ultra (60W MOPA + 40W Diode) if you want:
- Deep metal engraving
- Color engraving on stainless
- Thick wood/acrylic cutting
- Industrial power in one unit
Choose xTool F1 Ultra if you want:
- Budget-friendly metal engraving
- Portable & compact form factor
- Mixed-material capability
Pros & Cons
xTool F2 Ultra UV
Pros
- Incredible detail (0.02mm spot)
- Best machine for glass & plastics
- Fastest engraving speed
- Inner engraving support
- Autofocus + LiDAR
- Compact, enclosed design
Cons
- Cannot cut metal
- No LightBurn support
- Smaller inner engraving area
Frequently Asked Questions
What materials can the xTool F2 Ultra UV engrave or cut?
The xTool F2 Ultra UV can engrave a wide range of sensitive and hard-to-process materials, including glass (surface + inner), crystal, acrylic (without melting), plastics (ABS, PP, PET, PVC, silicone), wood, leather, ceramics, coated metals, and PCBs.
Can the F2 Ultra UV engrave inside glass?
Yes — this is one of its main advantages.
The F2 Ultra UV performs true 2D/3D inner glass engraving without requiring manual focusing. You simply enter the glass object’s size and position, and the machine automatically adjusts focus to engrave inside crystal blocks, awards, ornaments, and cubes.
(Tempered, laminated, or heavily tinted glass is not supported.)
Does the xTool F2 Ultra UV work with LightBurn?
No.
Because of its advanced UV optics, autofocusing system, and inner-engraving workflow, the F2 Ultra UV only works with xTool Studio.
The good news: Studio supports both 2D and 3D formats (STL, OBJ, AMF, 3MF, GLB, PLY) and includes automated positioning and LiDAR focus routines specific to this machine.
Is the F2 Ultra UV good for engraving metals?
Yes — but with limitations.
The UV laser produces extremely clean, fine marking on metals (stainless steel, titanium, anodized aluminum, etc.). It’s perfect for micro text, QR codes, electronics, and jewelry.
However, it cannot cut metal and does not produce deep engravings like a fiber laser. If you need deep or color metal engraving, the xTool F2 Ultra (60W MOPA Fiber) is the right choice.
Are F2 Ultra UV lenses interchangeable with F2 Ultra lenses?
No — the lenses are not interchangeable.
The F2 Ultra UV and F2 Ultra use different:
Light sources
Wavelengths
Optical interfaces
Field lens designs
They belong to the same “F2 Ultra” series but are completely different machines internally.
Using the wrong lens could damage optics or produce unsafe laser reflections.
Final Verdict: Is the xTool F2 Ultra Worth It?
Yes — if you work with plastics, glass, jewelry, electronics, or detailed custom work, the xTool F2 Ultra is one of the best UV laser engravers available.
It offers unmatched precision, business-friendly speed, and safe, clean engraving that other laser types simply cannot replicate.
It’s currently one of the most capable desktop systems for true internal 3D glass engraving.
You get:
- Ultra-fine 355 nm UV precision
- Automated depth control
- Support for 2D + 3D models
- Industry-grade detail
- Compact, quiet, safe operation
Whether you’re a gift business, trophy shop, personalization kiosk, or a maker wanting to add premium glass engraving to your workflow, the xTool F2 Ultra UV is one of the best options available today.