Before


After


Objective
Prepare a 14K yellow-gold casting tree for final polishing by reducing casting texture, smoothing parting lines, and establishing a uniform pre-polish surface without altering critical geometry.
| Part Description | 14K Yellow Gold Casted Tree |
| Industry | Jewelry |
| Fabrication Method | Cast/Molded |
| Material | 14K Yellow Gold |
| Process Technology | Burnish, Surface Preparation, Wet Grinding |
| Equipment Type | Roll Burnisher, Drag Finisher |
Solution
Bel Air developed a two-stage finishing process to prepare the 14K yellow-gold cast tree for efficient downstream polishing. The workflow began with a Roll Burnisher operation that compresses and smooths the raw casting surface. This step reduces surface-level porosity, limits metal removal during polishing, and produces a more uniform baseline surface condition.
After burnishing, the tree was transferred to a Vertical Drag Finisher for controlled pre-polishing. This stage uses media-driven abrasion to smooth parting lines and create a consistent pre-polish appearance without softening critical edges or altering setting dimensions. By combining gentle surface conditioning with precision drag finishing, the process eliminates 70–90% of the manual pre-polishing typically required and delivers consistent, repeatable results at scale.
If you are unsure what equipment and media you require to achieve your desired surface finish, then send us your part, and we will evaluate it and provide you with a metrology report.