1. What is a UV Laser Engraver
A UV laser engraver uses 355 nm ultraviolet light for precise marking with minimal heat, preventing charring or discoloration. Its short wavelength enables nano-level detail, ideal for sensitive materials like glass, plastics, PCBs, medical devices, and more.
UV Laser Compared to Other Laser Types
| Laser Type | Wavelength | Process Type | Typical Materials | Advantages |
| UV | 355 nm | Photochemical | Plastic, glass, silicon, PCBs | Ultra-high precision, no heat damage, ideal for delicate materials |
| CO₂ | 10600 nm | Thermal ablation | Wood, acrylic, fabric, leather | Fast cutting of thick non-metals, cost-effective |
| Fiber | 1064 nm | Thermal etching | Metals, hard plastics | Fast metal marking/cutting, long lifespan |
Visit https://commarker.com for more laser engravers.
2. Laser Engraving Settings
These settings determine engraving depth, speed, and overall quality:
A. Marking Mode
|
Flat Mode: Engraves on flat surfaces. |
Roller Mode: Engraves cylindrical objects placed on rollers (constant diameter). |
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Chuck Mode: Fixes objects on a rotary axis using a chuck; suitable for various shapes. |
Extension Mode: Uses a slide extension for extended engraving. |
B. Speed
- Unit: mm/s
- Definition: The scanning speed of the laser beam.
- Faster speeds = shallower engraving; slower speeds = deeper engraving.
C. Frequency
- Unit: KHz
- Definition: The number of laser pulses per second. Higher = cleaner vertical cuts; lower = softer edges, less power.
D. Pulse Width (also known as Q-Pulse)
- Unit: ns (nanoseconds)
- Definition: Duration of each laser pulse. Shorter pulses produce finer details, while longer pulses result in deeper, darker marks.
E. Interval (also known as Line Interval)
- Unit: mm
- Definition: The spacing between adjacent laser lines. Smaller values yield denser fills and higher precision.
F. Passes
- Definition: Number of times the same pattern is engraved. More passes can deepen the pattern or cut material.
G. Material
- Definition: Different materials require different parameter settings for optimal results.
H. Fill Type (also known as Hatching)
- Definition: The pattern or direction of laser filling; affects the final texture.
I. Focus / Z-Height
- Focal Length: Distance from the lens to the focused point.
- Z-Height = Factory focal length – Material height
- Purpose: Proper focus ensures optimal results. Incorrect focus can lead to blurring, burning, or no marking.
Note:
If autofocus is enabled, no manual adjustment is needed.
For manual focus, calculate Z-height using the formula above.
Note:
Factory focal length varies depending on the field lens used. Refer to the manual for the correct values for each lens.
J. Power
Note:
For UV lasers, power is controlled indirectly via frequency and pulse width, not direct percentage.
K. Images vs. Vector Graphics
Images
- Formats: .png, .bmp, .jpg, .jpeg
- Use Cases: Photos, illustrations, reliefs.
Tips:
Since it's pixel-based, the image may lose clarity when scaled.
To improve engraving results, adjust the grayscale and threshold settings to enhance detail.
Vectors
- Formats: .dxf, .plt, .ai, .svg, .pdf
- Use Cases: Logos, text, QR codes, technical designs.
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