Custom Silicone Manufacturing · Shenzhen, China
Custom Silicone Casting Molds in Shenzhen
RUUIPON makes custom RTV silicone casting molds in Shenzhen for food, craft and industrial casting projects. Applicable production starts from 20 molds per design. Send your drawing, sample details or reference photos for a review of the design, mold structure and prototype scope.
- 2018
- Founded in Shenzhen
- From 20 pcs
- Selected custom RTV mold projects
- Project-specific
- Prototype schedule confirmed after review
- Food-contact documents
- Scope confirmed for material and intended use
Main custom mold lines
Gummy, chocolate, and related molds
Explore custom molds for gummy, chocolate, baking, ice, soap and candle applications. For other casting materials, see our wax melt and resin mold ranges. Each product page explains the information needed for a project review. For food-contact projects, review our material and documentation guidance.
What Are You Trying to Make?
01
A Flexible Mold for Casting Another Material
Use this route when the silicone mold will be filled with gummy, chocolate, resin, plaster, wax, soap, water, batter or another compatible casting material.
RUUIPON can review cavity geometry, release direction, mold structure, tray support, branding and production layout before the mold is repeated.
02
A Design or Prototype Before Production
You do not need perfect production CAD to start a discussion.
A sketch, sample, photo set or rough model can be enough for an initial DFM review. If new geometry must be created, the design scope and approval point should be defined before tooling begins.
03
A Food-Contact Mold
For gummy, chocolate, baking, ice and other food-contact projects, material selection and documentation need to match the actual use and destination market.
04
A Finished Silicone Product or Component
If the finished item itself is silicone, the project may require HCR/HTV compression molding, LSR injection molding or an overmolding route rather than an RTV casting mold.
The right choice depends on part geometry, material, volume, tolerance needs, inserts and how the product will be assembled or used.
Manufacturing Routes We Can Review
01
RTV Silicone Mold Manufacturing
Flexible molds used to cast another material. Mold structure may be one-piece, split, cored or supported depending on the geometry and casting process.
02
HCR/HTV Compression Molding
For suitable finished silicone products and components produced in heated compression tooling.
03
LSR Injection Molding
For suitable liquid silicone rubber parts where geometry, repeat production and process requirements justify an injection-molding route.
04
Silicone Overmolding / Insert Molding
For projects where silicone must be integrated with a compatible insert or substrate.
Start From the Information You Already Have
A useful project review can start from any of the following:
- STEP/STP or other production CAD;
- STL or mesh geometry for sculptural parts;
- 2D drawings with key dimensions;
- a physical sample that can be measured;
- a sketch plus dimensions;
- clear photos and reference images when the design is still being defined.
If the project is confidential, tell us before sending the complete design so the NDA requirement can be addressed first.
What We Review Before Tooling
01
1. The Delivered Object
Are you buying a flexible casting mold, a finished silicone part, metal tooling, or a silicone-overmolded assembly?
02
2. Geometry and Release
We review undercuts, deep features, fragile details, parting strategy, support and the real demolding or assembly path.
03
3. Material and Use
The material choice must fit the application, not a generic hardness or "food-grade" label.
04
4. Prototype Risk
The prototype should prove the features most likely to create cost or production problems: fit, cavity weight, logo detail, release, support, assembly or another project-specific requirement.
05
5. Production Handoff
Repeat production should reference the approved design revision and the acceptance criteria that matter to the project.
Applications
01
Food & Confectionery
Custom molds for gummy, chocolate, custom baking molds, ice, and candy. Food-safe means the compound and the finished mold are documented for that food: food-safe silicone molds.
02
Resin, Craft & Decorative Casting
Flexible molds for resin, plaster, and concrete and cement.
03
Custom Silicone Products
Finished molded silicone components and products where HCR/HTV, LSR or overmolding is the appropriate route.
What Good Evidence Looks Like
A supplier claim is more useful when it can be tied to the specific project.
Depending on what you are buying, useful evidence can include:
- the legal company identity used on the quotation;
- photos of the relevant production process;
- the approved drawing or sample revision;
- material identification and applicable test documentation;
- prototype photos or measurements against agreed critical features;
- packing and shipping details for the final order.
If a document or test report matters to your purchasing decision, request it by name and confirm what material or article it actually covers.
A Practical Development Sequence
01
Send the Requirement
Tell us what you need to receive, how it will be used, what files or samples you have, and the expected quantity.
02
DFM and Process Selection
We review the object and recommend the manufacturing path before tooling is released.
03
Design / Tooling Preparation
Where geometry must be created or revised, approve the relevant drawing or model before manufacturing proceeds.
04
Prototype and Real-Use Check
Test the requirement that matters: fit, casting, release, piece weight, logo, support, assembly or another critical function.
05
Production After Approval
Production follows the approved revision and project-specific commercial terms.
Send Enough Information for a Useful First Review
Include:
- what you need to receive;
- drawing, 3D file, sample, sketch or photos;
- key dimensions;
- material or end-use;
- prototype and expected production quantity;
- critical requirements such as fit, piece weight, branding, inserts or documentation;
- destination country if shipping support is needed.
Shenzhen workshop since 2018
Real factory photos from RUUIPON
Bao'an workshop shots, framed on the finishing room, the press row, and the tool rack.
Meet buyers in person
Real exhibition meetings — not stock photos
Chinaplas and overseas trade shows: RFQ notes, sample reviews, and face-to-face mold discussions with brand buyers.
People behind the molds
Shenzhen team — workshop, QC, and sample casting
Real faces from our Bao'an workshop: material checks, press-side walkthroughs, and food-grade demold samples.
Shop clips
Demold clips from the shop
Short phone clips from our floor. Tap Play to load one. Not a cycle-life claim.
Mahjong demold
The face leaves the cavity. Detail stays on the piece.
Peony / mousse finish
Deep petals need draft and a skin that returns after peel.
Handmade soap cast
Soap demolding demonstration showing surface detail and release. Specify the soap formulation and process when requesting a similar mold.
Imperial-seal mousse
The emboss has to release.
FAQ
Can you make custom silicone molds or parts from my design?
Send your design and explain whether you need a casting mold or a finished silicone item. RUUIPON reviews the geometry, intended use, quantity and material requirements to identify the suitable manufacturing route.
Do I need to provide a 3D CAD file, or can you design it for me?
You do not need a perfect CAD file to start. STEP or STL is best for a firm quote. A drawing, sketch, measured photos, or a physical sample is enough to begin. If we build or revise the 3D, custom/simple modeling is USD $50 when that scope applies. Chargeable CAD starts only after that scope is confirmed.
How much does 3D / CAD design cost?
Simple 3D modeling is USD 50 when the agreed work falls within that scope. More complex reconstruction or substantial changes are quoted separately. The scope, deliverables and approval steps are confirmed before paid design work starts.
Can I get a sample or prototype before ordering production?
A prototype can be included in the development scope. We confirm what it needs to demonstrate, the applicable quantity and the schedule before work begins. Applicable custom RTV production starts from 20 molds per design.
What is your minimum order quantity (MOQ)?
Applicable custom RTV mold production starts from 20 molds per design. Prototype quantities and requirements for HCR/HTV, LSR or overmolding projects are confirmed separately.
How do you quote unit prices for different quantities?
To prepare an accurate quotation, please send your design or reference images, finished dimensions, casting material, cavity requirements and order quantity. We will review the mold structure and confirm the applicable CAD, tooling, prototype, production and shipping costs. For applicable custom RTV casting molds, production starts at 20 molds per design. The number is not firm without files or confirmed specs.
How much is mold / tooling, and who owns the mold?
Tooling is quoted per project: pattern, resin production mother, RTV, and a jacket when the skin would sag. Paying a tooling fee does not automatically answer who owns the CAD, the physical master, the silicone molds, or the right to reproduce the design. Those items are written on the quotation before the first deposit.
What is the typical lead time?
The schedule depends on the manufacturing route and the design, prototype and production work required. We confirm each stage and its approval requirements in the quotation. Buyer testing and shipping time are separate from the factory work schedule.
What silicone materials and Shore hardness do you offer?
Material and hardness are selected for the casting material, release requirements, mold structure and use conditions. Send these requirements with your enquiry so the proposed material and any supporting documentation can be reviewed.
RTV or HTV - which should I choose?
If you pour into a cavity, the usual route is an RTV casting mold. HCR/HTV compression tooling and finished silicone parts are a separate quote. See our overview: RTV vs HTV silicone molds. Tell us the quantity and what you pour.
Can you ship internationally? What about EXW / FOB / DDP?
Include the destination and preferred delivery terms in your enquiry. The quotation confirms the agreed shipping scope and costs so offers can be compared on the same basis.
Do you provide food-contact or other compliance documents?
Food-contact documents depend on the compound, the food, the temperature, and the destination market. 21 CFR 177.2600 is extraction of the article, not an FDA-approved factory. Ask for the papers that match your use.
Will you sign an NDA?
Tell us about your confidentiality requirements before sending sensitive files so the appropriate agreement can be discussed.
Do you offer OEM / private-label packaging?
Branding and packaging requirements are reviewed with the project. Send the artwork, label requirements and preferred packaging format so availability and costs can be confirmed separately. Protective shipping packaging is also agreed for the mold or product. Production RTV trays ship flat, not folded, so the cavity does not take a set.
What payment terms do you use?
Terms are stated on each proforma. Chargeable CAD starts only after the modeling scope is confirmed. Tooling and production are separate lines after you approve the 3D.
Can you work with my contract manufacturer's tray or machine specs?
Yes, when you send tray size, cavity pitch, depositor type, and how the tray demolds. We size the cavity from the finished piece, then check whether the filled tray still lines up with the nozzles.
Send Your Project
Send your drawing, CAD, sample details or reference photos, together with the intended use and quantity. We will review the geometry, material requirements and manufacturing route before confirming the design scope, tooling, prototype plan, MOQ and lead time.