Custom silicone mold design service
Design-to-mold service with engineer numbers - MOQ 20
RUUIPON custom silicone mold design services cover DFM, prototype in 3-7 days after CAD approval, vacuum-degassed production tooling, and global ship from Shenzhen. Quote usually within 24 hours on complete files. FDA/LFGB when retail needs it.
What this service is (and is not)
Our custom silicone mold design service ships the cavity tools you cast with - not finished gummies, candles, or soap bars. We are a Shenzhen workshop (since 2018), not a trading desk that forwards RFQs, and not a finished-goods OEM quoting MOQ 300-1000 packed products.
You get Shore A numbers, draft notes, cavity depth in mm, and a prototype you can pour before production quantity. Soft brochure adjectives without those numbers do not survive sticky pectin or hot wax cool-down.
- DFM and CAD support from sketch, photo, or STEP/STL
- Prototype in 3-7 business days after CAD approval
- Production at MOQ 20 per design with vacuum degassing
- Food-grade FDA/LFGB path when you name the market
Full factory framing: custom silicone mold manufacturer.
Service workflow - five gates
Skip a gate and you pay for it in scrap. Same spine as our manufacturer pillar - clearer when you are comparing service shops.
Design & DFM review
Send a STEP/STL file, PDF drawing, photo, or physical sample. We advise on silicone grade, Shore A hardness, shrinkage compensation, demolding angles, and multi-cavity layout. No 3D file? We model from your sketch.
Prototype mold (3-7 business days)
After CAD approval, we produce a working prototype so you can test with your actual resin, chocolate, wax, or soap before production tooling.
Production tooling
Approved designs move to multi-cavity RTV silicone tooling with vacuum degassing. Each cavity is checked for bubbles, dimensional accuracy, and surface finish.
QC inspection & test cast
Visual inspection, dimensional check, and a test cast in your material before packing.
Packaging & global shipping
Protective packaging. Terms: FOB/EXW Shenzhen. DDP delivery available to 50+ countries.
DFM gates we run on every file
Most custom mold delays come from incomplete inputs. We front-load these checks so you do not discover them after tooling is poured.
Parting & demold path
One-part vs two-part decision before master cut - undercuts that look fine in CAD fail after resin or wax hardens.
Shore A band
Number on the quote, not soft/medium/hard. Sticky gummy and deep resin undercuts do not share one hardness.
Shrink ~0.1%
Platinum compensation on the master so cavity volume matches target grams / ml after cure.
Wall & tray span
Soft compounds oil-can on large flats. We raise Shore or split trays instead of shipping a floppy sheet.
Logo / text width
Knife-edge type looks sharp in renders and tears in production - we fillet when imprint life matters.
Vacuum on production pour
Pinholes reprint forever on gloss chocolate and resin logos. Degassing is standard on production tools.
Deep dives: multi-cavity design · vacuum degassing · release agent.
Materials & Shore A hardness
Platinum-cure silicone is our production standard - longer library life and cleaner food-grade options than tin-cure hobby compounds. Shore A is specified as a number on the quote.
| Application | Typical Shore A | Why |
|---|---|---|
| Deep resin / undercut figurines | 20A-30A | Flex for demold without tearing thin casts |
| Shallow resin trays / coasters | 30A-40A | Flat pour surface; less tray warp |
| Chocolate logo / bar trays | 30A-40A | Crisp edges; stable temper demold |
| Gummy / pectin | 25A-35A | Flex for sticky demold; wall thickness matters |
| Soap (cold process) | 25A-35A | Easy peel from loaf and cavity molds |
| Candle / wax melt | 30A-40A | Hold geometry through cool-down |
| Ice / large flat molds | 35A-45A | Stiffness under freezer flex cycles |
| High-cycle food multi-cavity | 35A-45A | Handling, stack storage, edge life |
Guide: Shore A hardness. Cure: platinum vs tin.
Capabilities & specifications
Numbers buyers compare when shortlisting a custom silicone mold design service.
| MOQ | 20 pieces per design |
|---|---|
| Quote turnaround | Typically within 24 hours on complete files |
| Prototype lead time | 3-7 business days after CAD approval |
| Production lead time | 2-4 weeks (volume and grade dependent) |
| Silicone type | Platinum-cure standard; tin-cure on request |
| Shore A hardness | 20A-50A matched to application |
| Shrinkage compensation | ~0.1% typical for platinum-cure masters |
| Draft guidance | 1-3 degrees on vertical walls when geometry allows |
| Cavity depth | Shallow trays to deep draws - specify depth in mm |
| File formats | STEP, STP, STL, IGES, PDF, photos, physical samples |
| Surface finish | Matte, gloss, or textured for release and brand look |
| Certifications | FDA, LFGB food-grade on request |
| Incoterms | FOB / EXW Shenzhen; DDP available many countries |
Failure modes we design against
Service pages that only list happy path miss why buyers hire a shop.
Sticky demold stretch
Pectin and some resins pull soft walls. Outer cavities on a crowded tray can drift 5-8% in weight. Fix walls, Shore, or split - not spray alone.
Tray oil-canning
Large soft trays twist on temper tables and resin benches. Raise Shore or cut span.
Bubble / fisheye casts
Often mold-compound air, wrong release, or trapped geometry. Prototype with your mix before MOQ 20.
Wax vacuum lock
Tall pillars without draft grab on cool-down. Draft and Shore belong in DFM, not after first scuffed face.
Industries & product paths
One service spine - hardness, food grade, and cavity layout change by industry.
Resin & craft brands
Custom coasters, figurines, trays, and logo embeds. Soft Shore A for undercuts; firmer trays for flat pours. Release guidance for epoxy and polyurethane.
View category →Chocolate & confectionery
Food-grade platinum molds for bars, logos, and seasonal shapes. FDA/LFGB docs when retail requires them. Prototype with your temper process.
View category →Gummy & candy
Cavity hardness and wall thickness tuned for sticky pectin demold and piece-weight consistency at small-batch MOQ 20.
View category →Candle & wax melt makers
Pillar, container insert, and melt cavity tools with texture options. Geometry and Shore A set for clean wax release.
View category →Soap & bath brands
Loaf and cavity molds for cold-process and related recipes. Flex for demold without collapsing large walls.
View category →Baking, ice & hospitality
Baking forms, ice shapes, and beverage program molds - food-grade compounds and finishes matched to kitchen use.
View category →
What to send for a fast quote
Incomplete RFQs slow everyone down. Send the list below and we typically return a quote within 24 hours - with Shore A recommendation, cavity notes, and lead time.
- 3D file (STEP/STL preferred) or clear photos / physical sample
- Casting material: resin, chocolate, gummy, soap, wax, etc.
- Cavity depth and overall size in mm (or annotated drawing)
- Undercuts, logo text, or fine texture notes
- Target Shore A - or ask us to recommend
- Cavity count preference and daily cast volume if known
- Food-grade need: FDA, LFGB, or none
- Quantity for first run (MOQ 20+) and reorder outlook
- Ship-to country and preferred Incoterms
Ordering walkthrough: how to order. Budget: cost hub. MOQ strategy: MOQ 20 vs 300.
Prototype, production, reorders & steel handoff
Prototype is not optional theater. Sticky pectin, resin fisheyes, tray warp, and wax lock show up in real casts. You approve the working tool, then we scale to production at MOQ 20+.
- Prototype: 3-7 business days after CAD approval
- Production: vacuum-degassed platinum tooling; cavity QC before pack
- Reorders: tooling exists - change Shore A or geometry as a revision
- Steel handoff: when daily volume outgrows RTV, we say so - see silicone vs steel cost
- Warranty: manufacturing defects covered for 6 months; misuse and normal wear beyond expected cycle life are not
Topic cluster
Services pillar for process intent. Manufacturer pillar for factory intent. Products and blogs feed both - one primary keyword per URL.
Services FAQ
- What is the minimum order quantity?
- 20 pieces per design (finished mold tools, not 50 casts from one mold). Smaller paid tests are case-by-case - ask on the quote form.
- How long does a custom silicone mold take?
- Prototype: 3-7 business days after design approval. Production: typically 2-4 weeks depending on volume and grade.
- Can I get a sample mold before a large order?
- Yes. The prototype stage is your sample - you test cast with your material before we scale to production tooling.
- What materials do you use?
- Platinum-cure silicone as standard (Shore A 20-50 matched to application). Food-grade FDA/LFGB grades available for food programs. Tin-cure only on request.
- How do you choose Shore A hardness?
- From your casting material, cavity depth in mm, undercuts, and cycle life. Soft for deep undercuts; firmer for flat trays that must not warp. Confirmed at prototype.
- Why is MOQ 20 when other factories want 300-1000?
- Many quotes at 300+ are finished silicone consumer goods OEMs. We sell custom mold tooling for brands testing SKUs.
- Is vacuum degassing included?
- Yes on production platinum tooling. Pinholes reprint on gloss food and resin faces - we do not treat vacuum as an optional checkbox.
- Do you work with Etsy / Shopify sellers?
- Yes - many clients launch at MOQ 20 before scaling inventory.
- What should I send for a quote?
- STEP/STL or photos, casting material, cavity depths in mm, food-grade need, and target quantity. Complete files usually get a reply within 24 hours.
- What is your warranty?
- Manufacturing defects for 6 months. Damage from misuse or normal wear beyond expected cycle life is not covered.
Send your file - service quote with Shore A and lead time
Send your design, target material, and quantity. We confirm silicone grade, hardness, and certification needs - usually within 24 hours.