Turn a Photo into a 3D Point Cloud for Crystal Engraving

Watch the 2:48 Crystal Fabricator tutorial, recorded on the live site, with chapters, a step-by-step PDF guide and a link to open the tool. Free to watch.

In this tutorial

• 1 SOURCE: upload a picture; brightness becomes depth, built on your own device with no credits
• One point per pixel: turn and zoom the 3D preview
• DEPTH THRESHOLD skips dark pixels (a busy background becomes depth too)
• 2 DEPTH: RESOLUTION is the point spacing in mm (default 0.25 mm)
• Z-DEPTH SCALE, GAMMA, CONTRAST, Z-OFFSET and INVERT DEPTH; points past the safety margin are flagged in red
• 3 MATERIAL: QUICK PRESETS or your block's width, height and depth (SMALL = 50 × 50 × 20 mm)
• SAFETY MARGINS keep every point inside each face; WORKPIECE METRICS show the usable area and engrave depth
• 4 EXPORT: VERTEX-STL (RK-CAD, SeaCAD, BSL), PLY (CloudCompare, MeshLab) and RAW XYZ (plain text, mm)
• Measured: 34,225 points in each file, 1 unit = 1 mm, spanning 46 × 46 × 16 mm centred in the block

Chapters

1. 0:00 Intro
2. 0:15 Upload a picture
3. 0:26 One point per pixel
4. 0:44 Depth Threshold
5. 1:04 Resolution
6. 1:15 Shape the relief
7. 1:36 Your block
8. 1:49 Safety margin
9. 2:07 Three exports
10. 2:21 Export Summary
11. 2:37 Wrap-up

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