Abstract Ribbon Pearl Pendant STL for Lost Wax Casting | Casting-Ready CAD File

Description

Introduction

This abstract ribbon pearl pendant CAD model is built for direct entry into jewelry manufacturing pipelines. The flowing ribbon body is engineered with clean closed-mesh geometry, compatible with both lost wax investment casting and resin-based 3D printing. The pendant suspends a 6.5mm cultured pearl drop via a reinforced bail loop — a production-stable structure suitable for high-volume casting runs. All geometry has been validated in Rhino and JewelCAD environments prior to file packaging.

Stone Setting Structure

The model incorporates 15 round-cut diamond seats across two setting types. Fourteen stones at 1.0mm are arranged in a Micro Pave channel along the ribbon track. A single 2.2mm stone occupies a four-prong solitaire seat at the ribbon’s focal point. Total diamond weight: 0.096 CT. The 6.5mm pearl bail loop carries a 1.2mm internal diameter — compatible with standard pearl adhesive-set finishing.

Manufacturing Benefits

• Casting-optimized geometry: Hollow ribbon core with escape venting reduces metal pooling.
• Printable wall thickness: Minimum 0.7mm — SLA resin threshold compliant. Wax CNC: 0.16g.
• Scalable geometry: Uniform NURBS surface — safe ±15% scaling without prong distortion.
• Bail loop reinforced for high-stress pendant wear and pearl connection stability.

Production Specifications

CAD Workflow Compatibility

The 3DM file opens natively in Rhino 6/7 with NURBS surfaces and layer structure intact. The JCD file supports stone repositioning and bail modification in JewelCAD. The STL is mesh-validated (zero naked edges) and ready for direct SLA/DLP upload. The bail provides a natural sprue attachment point for investment casting pipelines.

Manufacturing Notes

• Scaling: Uniform ±15% safe. Avoid non-uniform scaling on ribbon axis beyond ±20%.
• Casting prep: Recommend 2.5mm sprue attachment at bail top for 14K gold.
• Pearl setting: 6.5mm bail loop pre-engineered for adhesive-set freshwater or Akoya pearls.
• Platinum casting: Increase flask temperature +50°C vs. 18K gold parameters.

FAQ

Q: Is this file ready for direct lost wax casting without modifications?

A: Yes. The geometry is casting-optimized with validated closed-mesh structure. Sprue point pre-identified at bail loop.

Q: Can I modify the pearl size?

A: Yes. The bail connector ring is adjustable in the 3DM file. Pearl sizes 6.0mm–8.0mm are compatible without structural changes.

Q: Which 3D printing systems are supported?

A: SLA/DLP resin printers (Formlabs, Phrozen) and FDM wax systems. Recommended layer resolution: 25 microns.

Q: Is the Micro Pave channel for hand or machine setting?

A: Designed for hand-setting. Bead walls pre-raised at 0.15mm for standard pave tool engagement.

Q: What alloys are included in weight data?

A: 10K/14K/18K/22K Gold (YG/WG/RG), 925 Silver, Platinum (PLAT / PLAT RU). See Production Specifications table.