What shrinkage rate do you calculate for casting?
We typically factor in 1.5% - 2.5% shrinkage for gold casting, depending on the geometry and wax type.
Do you do 3D printing in wax or resin?
We use high-resolution castable resin (like EnvisionTEC) for sharp details, which burns out cleanly without ash residue.
Can you set stones in wax (Stone-in-Place)?
Yes, for certain low-value designs. But for gold and high-quality diamonds, we strictly hand-set after casting for security.
What is your polishing standard?
We adhere to a 'mirror finish' standard. We use a 3-step polishing process: magnetic tumbling, hand pre-polish, and final rouge buffing.
How do you handle micro-pave porosity?
We use vacuum casting machines to eliminate gas porosity. Every piece is inspected under microscope before setting.
What tolerance do you hold for CADs?
Our CADs are precise to 0.05mm. We adjust prongs 0.1-0.2mm longer for the setter to trim and shape.
Do you supply mountings for jewelers?
Yes. We can supply raw castings, polished semi-mounts, or fully finished pieces. Flexible collaboration modes.
Can you use user-provided STL files?
Yes. If you send a verified STL/3DM file, we can print and cast it directly. We will check it for printability first.
How do you plate your white gold?
We use a heavy Rhodium plating bath (1 micron) for a bright, durable white finish that lasts longer than standard flash plating.
What is the purity of your PT950?
We use a Ruthenium-Platinum alloy (95% Pt, 5% Ru) which is harder and more durable than Cobalt-Platinum alloys.
Do you use solder or laser welding?
We primarily use high-precision laser welding for assembly and repairs, ensuring invisible seams and strong bonds.
How do you quality control pave settings?
We do a 'drop test' and ultrasonic stress test to ensure no stones are loose. We check alignment under 10x magnification.
Can you do enameling?
Yes, we have skilled artisans for cold enamel and heat-cured ceramic coatings for colorful designs.
What is the turn-around for bulk casting?
For established molds, we can output 500+ pieces per week. New mold development takes 3-5 days.
Do you refine your own scrap?
We work with certified state refineries to recycle our gold dust and sprues, ensuring a closed-loop sustainable material flow.
Can you create a rubber mold from a sample?
Yes. We can make Liquid Silicon Molds (LSM) or vulcanized rubber molds from a metal master for mass production.
What is the minimum wall thickness for casting?
We recommend a minimum of 0.6mm-0.8mm for structural integrity in rings. Anything thinner risks bending.
Do you offer 'milgrain' detail?
Yes. We can apply milgrain edges either in the CAD (soft look) or by hand tool (sharp, vintage look).
Can you do two-tone casting?
We usually cast separately and laser weld for a clean line. For complex interweaving, we may use plating masking techniques.
Do you provide CAD rendering services?
Yes. We can provide photo-realistic 4K renders for your marketing before the piece is even made.