Edit the planes that define a convex gemstone. Experimental local workspace.
Save plane projects to this browser or your signed-in account on this server. Download backups for safekeeping. Plane offsets are distances from the model origin, not cutting-machine depths. Geometry is not a cutting or manufacturing certification.
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Right-handed XYZ coordinates in millimetres. Index 0 points along +X; indexes increase counterclockwise when viewed from +Z. The table is horizontal, angle 0°. A vertical girdle plane is 90°. Crown normals point upward and pavilion normals downward. A plane keeps points where normal · position ≤ offset. Editing a tier label groups the display; it does not constrain other facets.
To add a facet, change the selected plane’s angle, index, or offset, then choose Add as new plane. Invalid, empty, open, or duplicate-plane edits are rejected. Redundant planes are retained and listed as inactive. Meet-point locking and symmetry constraints are not implemented in this editor.