Process guide / Published July 1, 2026

From Sample to Shipment: The Custom Dice Manufacturing Process, Step by Step

Custom dice move through nine stages from RFQ to shipment: spec and quote, sample development, incoming material inspection, molding or casting, in-process dimension and finish checks, numbering and fill, set completeness verification, packaging inspection, and export documentation. The middle six stages form a formal quality-control chain, so no batch reaches packaging without being checked at least twice.

Stage 1: RFQ and specification

Every order starts with a spec: material, approximate quantity, numbering style, finish, branding, and packaging direction. The factory reviews feasibility and MOQ and returns a quote. This stage is covered in full in our ordering guide.

Stage 2: Sample development

Before any production commitment, a physical pre-production sample is made — typically 7-21 days depending on material — so color, weight, numbering, and finish can be approved. This is the point to catch and correct anything, since changes after production starts are far more costly.

Stage 3: Incoming material inspection

Once the sample is approved and production is scheduled, incoming raw material — resin, acrylic pellets, metal alloy, or sorted natural stone — is checked against the approved sample before it enters molding or casting. This catches batch-to-batch material variation before it becomes a finished-goods problem.

Stage 4: Molding, casting, or engraving

Forming method depends on material: acrylic is injection molded, resin is cast into molds and cured (with vacuum degassing for sharp-edge effects), and metal dice are die cast, then machined and prepared for plating.

Stage 5: In-process dimension and finish checks

Rather than waiting until a batch is finished, dimensions and surface finish are checked at intervals during production — balance, edge sharpness or roundness, and surface consistency are the main things inspectors look for at this stage.

Stage 6: Numbering, foil, or paint

Numbers are engraved or pad-printed, then filled with foil, paint, or ink as specified. Foil adhesion and fill consistency are checked as part of this step, since number legibility is one of the most visible quality markers on a finished die.

Stage 7: Set completeness verification

Finished dice are matched into complete sets — typically the 7-piece D4/D6/D8/D10/D12/D20/D% configuration — and checked against the order spec for color consistency and correct piece count before moving to packaging.

Stage 8: Packaging inspection

Packaged units, whether gift box, tray and bag, or bulk pack, are checked against the approved packaging spec, including print quality and insert fit for retail-ready packaging.

Stage 9: Export documentation and shipping

The final step covers export paperwork and shipping terms. Buyers working with an overseas factory should confirm ahead of time: English-speaking sales support, EU/US documentation experience, and whether shipping is EXW (Ex Works) or FOB (Free on Board) from the origin port. Third-party testing can typically be arranged when a buyer's market or retailer requires it.

Why the six-stage QC chain matters

Stages 3 through 8 above form a six-checkpoint QC chain — incoming material, in-process dimensions/finish, numbering/foil/paint, set completeness, packaging inspection, and export documentation — rather than a single inspection at the end of the line. Catching a material or dimension issue early, before numbering and packaging labor is spent on a bad batch, is what keeps defect rates low without inflating cost. If you're comparing manufacturers, ask specifically how many checkpoints their line uses and at which stages, not just whether they "do QC."

Frequently asked questions

How many quality control checkpoints does dice production go through?

A well-run line uses six: incoming material inspection, in-process dimensions and finish, numbering and foil/paint verification, set completeness, packaging inspection, and export documentation review.

What happens between sample approval and full production?

The factory locks the production spec, schedules the material batch or mold run, and begins incoming material inspection before molding, casting, or die casting starts.

What shipping terms are typical for custom dice orders?

EXW and FOB from the origin port are the two most common terms for factory-direct orders, with export documentation and optional third-party testing arranged before shipping.

How are polyhedral dice made in a factory?

Injection molding for acrylic, resin casting and curing for sharp-edge and liquid-core effects, and die casting followed by machining and plating for metal. Gemstone dice are cut and polished from sourced stone rather than molded. All materials then go through numbering, finishing, and QC.

What machines are used to manufacture dice?

Injection molding machines for acrylic, casting molds and vacuum degassing equipment for resin, die casting and CNC/engraving equipment for metal, plus dedicated pad printing or foil-fill equipment for numbering across all materials.

How long is the custom dice production timeline from start to finish?

Sampling and production together, most orders run 4-10 weeks total: 7-21 days for sampling depending on material, then 18-50 days for production depending on material and effect complexity.