Diamond Wax Setting
Manufacturing Process

The complete workflow from design file to finished jewellery — with the Semsons Tech machine at the centre of the most critical step.

Complete Production Workflow

Lost-wax casting jewellery production with automated diamond setting follows a defined sequence. The Semsons Tech machine performs Step 4 — the highest-value, highest-labour step in the chain.

1

CAD Design

The jewellery piece is designed in 3D CAD software (Matrix, RhinoGold, JewelCAD). Stone positions, sizes, and orientations are specified in the design file. The Semsons Tech-compatible coordinate export is generated at this stage.

2

Wax Model Production

The CAD file is sent to a 3D wax printer or wax milling machine, producing a physical wax model of the ring, bracelet, or pendant. This is the blank that will receive the stones.

3

Model Preparation

The wax model is cleaned, inspected, and mounted on the Semsons Tech machine fixture. Stone trays are loaded with the correct sizes and colors. The coordinate file is imported into the proprietary OS.

4

Automated Diamond Setting

Semsons Tech Machine

The Semsons Tech machine drills each stone seat to the precise depth and diameter, places each stone with the suction nozzle system, and verifies placement via the Intelligent Identification System — all at 9,000–12,000 operations per hour.

5

Wax Inspection

The set wax model is visually or optically inspected. With the Intelligent ID System's 0.1% rejection rate, this step is rapid and rarely requires rework.

6

Investment Casting

The set wax model is embedded in investment plaster, heated to burn out the wax (lost-wax process), and molten gold, silver, or platinum is poured into the cavity.

7

Casting Cleanup

The cast metal piece is cleaned of investment, sprue-cut, and subjected to ultrasonic cleaning. Stones are now permanently set in the metal.

8

Finishing

Filing, grinding, polishing, rhodium plating (if required), and final quality inspection. The piece is complete.

Why Set Stones in Wax (Not After Casting)?

Wax Setting (Semsons Tech Method)

Stones set before casting — no risk of heat damage
Stone seats machined with CNC precision in soft wax
Investment locks stones in perfect position during cast
Eliminates hand-setting after casting entirely
Consistent depth and alignment guaranteed by machine

Post-Casting Setting (Traditional)

Stones set in hard metal — requires skilled hand tools
Heat from polishing/rhodium risks stone damage
Each setter's work varies — inconsistent output
Labour bottleneck: skilled setters are scarce
Rework rate 2–5% industry average

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