Best Lasercutter LogoHome

The Precision Advantage: Unlocking Impossible Materials with the xTool F2 Ultra UV Laser

The xTool F2 Ultra UV uses a 5W, 355nm UV cold laser to engrave clear acrylic, glass, crystal and delicate electronics without burns or cracks, enabling micro-text and 3D subsurface effects.

Published: November 17, 2025Updated: November 30, 20254 min read
xToolF2 Ultra UVUV LaserCold EngravingPrecision
The Precision Advantage: Unlocking Impossible Materials with the xTool F2 Ultra UV Laser

For years, professionals have faced a limitation in laser engraving: materials such as clear acrylic, glass, crystal and delicate electronics were extremely difficult to engrave cleanly. Traditional heat-based diode or fiber systems cause melting, warping or micro-cracks. The xTool F2 Ultra UV, using a 5W 355 nm UV laser, is designed to eliminate these issues.

Cold Processing at 355 nm

The F2 Ultra UV uses a process known as cold processing or photoablation. The short-wavelength UV beam carries enough energy to break molecular bonds directly instead of heating the material. This results in clean removal with minimal thermal distortion and no burned edges. Because of this, the machine can handle high-value materials that normally cannot be processed with desktop lasers.

Precision and Speed

The machine achieves a very small spot size of 0.01 × 0.01 mm. This micron-level precision is far finer than common desktop engravers and makes it suitable for micro-text, fine lines and detailed logos used in jewelry or industrial marking. Dual 48 MP cameras support accurate previewing and positioning. Even with this level of precision, the galvo system reaches speeds up to 15,000 mm/s, which is suitable for batch production.

View best price*byxTool

Working With Difficult Materials

The UV wavelength performs well on materials that absorb UV light but react poorly to heat:

  • Clear acrylic and plastics: The UV beam is absorbed instead of passing through, creating clean frosted marks without melting or warping.
  • Glass and crystal: Cold processing avoids the thermal shock that causes cracks. The engraver can perform both surface marking and 3D subsurface crystal engraving by focusing the beam below the surface of the material.
  • Electronics and metals: Sensitive components and circuit boards can be marked without heat damage. The fine spot size also allows very detailed jewelry engraving and high-precision markings on small metal parts.

By focusing on these challenging materials, the xTool F2 Ultra UV offers a professional-grade approach for creators who need clean results, fine detail and access to materials that are typically difficult or impossible to engrave with standard desktop lasers.