Recommended Parameter Settings for Crystal Craft 3D Laser Engraving

Application Example Lens Pointcloud Laser settings
XY Spacing Z
Spacing
Layer Spacing (Delta) Layer Count Level (Layers) Power % Frequency (KHz) Point Time (s)
2D image 50 × 50 mm 0.05–0.070.04–0.07*3–10* 40–6040–700.01
70 × 70 mm 0.06–0.080.05–0.08*5–10* 40–8530–600.01
3D image 50 × 50 mm 0.05–0.070.04–0.070.04–0.06*1–4 50–7040–700.01–0.03
70 × 70 mm 0.06–0.080.05–0.080.05–0.08*1–4 50–8540–600.01–0.03
3D model
Grayscale depthmap
50 × 50 mm 0.05–0.070.04–0.070.04–0.06*1–4 40–6040–700.01–0.03
70 × 70 mm 0.06–0.080.05–0.080.05–0.08*1–4 40–8030–600.01–0.03

How Each Variable Affects Engraving Results

For optimal results, the crystal should be engraved in the same direction it will be viewed.
If the front face is the viewing side, lay the crystal flat and engrave from that orientation.
1. Lens:
Smaller lens = higher energy, finer detail.
Larger lens = risk of tailing.
2. Dot Spacing:
Too small = cracks.
Too large = weak density.
3. Layer Count (2D):
More layers = sharp image.
4. Layer Count (3D):
More layers = white + dense.
5. Layer Spacing:
Smaller = smoother, overlap risk.
6. Power:
Too high = tailing.
7. Frequency:
Higher = finer dots.
8. Point Time:
Longer = brighter dots.
9. Glass Height:
Deeper = more energy required.

Tailing (in subsurface laser engraving) is an unwanted elongated streak or “comet tail” that forms behind a dot instead of a clean, round micro-fracture.
This is most common in K9 / optical crystal, which fractures very cleanly but also propagates cracks easily.

Quick rule of thumb (Crystal Craft 3D style)

If dots are bright but smeared → too much energy
If dots are dim but clean → increase frequency, not power