How to Brief a Silicone Mold Manufacturer: Files, Specs & Quote Checklist
Brief a silicone mold manufacturer correctly - CAD files, material specs, cavity targets, and quote checklist for MOQ 50 orders at RUUIPON Shenzhen.
Kyler Yang · Founder7 min read
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A incomplete brief is the fastest way to get a slow quote or a prototype that does not match your line. This guide is the quote checklist RUUIPON uses for custom silicone mold projects - files, specs, cavity targets, and market documentation - so you receive a useful response in about 24 hours and a prototype in 3-7 days after sign-off.
Quick answer: Send STEP/STL/IGES CAD (or clear drawings with mm dimensions), casting material, finished piece weight or size, target cavity count or daily output, demold direction, food-grade market if applicable (FDA/LFGB), and photos of reference parts. Missing pull direction and material type cause most quote delays.
Why Brief Quality Determines Mold Quality
Manufacturers cannot guess your gummy formula, wax fragrance load, or epoxy inhibitor sensitivity. The brief connects CAD geometry to production reality. Strong briefs get layout recommendations, Shore A picks, and draft notes in the first quote - not after a failed sample.
Related: how to order | prototype to production | OEM & small business
Files & Formats
| File type | Accept? | Notes |
|---|---|---|
| STEP (.step / .stp) | Preferred | Best for draft review |
| STL | Yes | Confirm units (mm) |
| IGES | Yes | Legacy CAD OK |
| PDF drawing + dimensions | Acceptable | Include top/side views |
| AI / SVG logo only | Not sufficient alone | Need 3D or depth spec |
| Reference photos | Helpful add-on | Not a substitute for dimensions |
- One master file per SKU - avoid scattered exports.
- Mark units in filename - e.g., logo-bar-100g-mm.stp
- Note pull direction - arrow in PDF or CAD view screenshot.
- Highlight undercuts - red on screenshot saves one revision round.
Universal Specs Checklist
| Field | Example | Why we need it |
|---|---|---|
| Casting material | 70% dark chocolate, epoxy Brand X | Shore A, release, inhibitor check |
| Finished weight / size | 20 g wax melt, 60 mm cube | Cavity volume |
| Cavity count target | 12-up or "200/day output" | Layout recommendation |
| Food market | US FDA / EU LFGB | Material grade + docs |
| Max pour / bake temp | 60°C wax, 180°C bake | Heat-stable grade |
| Tray outer size | 300×400 mm max | Fits your bench / oven |
| Quantity | MOQ 50+ production | Quote tier |
| Timeline | Launch date | Prototype vs production slot |
Brief Fields by Product Category
Gummy / candy - formula type (pectin/gelatin), deposit temp, starch vs direct fill. See gummy design guide | gummy molds
Chocolate - temper range, logo face, scuff tolerance. Chocolate guide | chocolate molds
Resin - resin SKU, pot life, exotherm, UV vs epoxy. Resin tips | resin molds
Candle / wax melt - wax type, fragrance %, wick hole spec. Candle guide | Wax melt guide
Soap - CP/MP/gel, bar weight, loaf vs cavity. Soap guide | soap molds
Baking - oven max, pan size, dough type. Baking guide | baking molds
Ice / hospitality - cube mm, logo depth, freezer well, nightly volume. Ice guide | ice molds
Quote & Timeline at RUUIPON
| Stage | Typical timing | Your action |
|---|---|---|
| Initial quote | ~24 hours | Send complete brief + CAD |
| Design review call/email | 1-2 days | Approve draft / split notes |
| Prototype mold | 3-7 days | CAD sign-off |
| Sample test | Your line | Pour, weigh, demold, photos |
| Production MOQ 50 | 2-4 weeks | Written approval |
Cost drivers: cost guide | Compare sourcing: custom vs stock
Common Brief Gaps That Delay Projects
- No material stated - we cannot pick platinum vs tin or food grade.
- Art-only logo - need emboss depth in mm.
- Missing weight - especially wax melts and chocolate.
- No market docs - FDA/LFGB request added late resets material batch.
- Cavity count before geometry test - approve sample layout first.
- Wrong contact email on file - use [email protected] for RUUIPON quotes.
Submit via Contact RUUIPON or email [email protected] | WhatsApp +86 135 3006 2969
Sample Email Template (Copy & Adapt)
Use this structure for fastest quote (~24 hours):
- Subject: Custom silicone mold quote - [product type] - [company name]
- Attachment: STEP/STL + one-page PDF with mm dimensions and pull arrow
- Body bullets: casting material, finished weight, cavity target or daily output, food market (FDA/LFGB if applicable), max temp, tray max outer size, quantity MOQ 50+, needed prototype date
- Reference photos: link or attach existing product / competitor sample
- Timeline: launch date or trade show deadline
Example opening line: "We need a 12-cavity food-grade tray for 18 g dark chocolate logo tablets, FDA-compliant silicone, target 200 tablets/day, tray max 300×400 mm, production MOQ 50 after sample approval, prototype needed by [date]. CAD attached." That single paragraph answers 80% of review questions.
After quote, confirm draft notes and Shore A in writing before prototype payment. After sample arrives, reply with approve / revise list including photos of failed demolds if any - verbal "mostly good" delays production. Revised cavities may need partial remaster, not full redesign, if feedback is specific (e.g., "add 1° draft on east wall").
International buyers: include Incoterms preference and shipping address for sample in first email to avoid freight rework. Shenzhen production aligns with Asia-Pacific supply chains; plan 2-4 weeks production plus freight for reorder planning. Multi-SKU programs: one spreadsheet tab per SKU beats eleven separate email threads - link tab in first contact.
Related resources: all products, OEM programs, pricing drivers, custom vs stock.
Procurement teams should assign one internal owner for mold briefs - split emails between design, ops, and finance without consolidated spec cause conflicting cavity counts in quote revision 3. Use version numbers on CAD files (logo-bar-v2.stp) so production never cuts v1 after you approved v2 verbally.
Payment and sample approval terms vary by order size - clarify prototype fee vs production deposit in first quote response. WhatsApp +86 135 3006 2969 suits quick photo feedback on sample demold failures; attach scale photo with ruler for dimension disputes. Email [email protected] remains official channel for PO and spec lock.
First-time importers: factor freight and customs for tray shipments from Shenzhen into landed cost comparison vs domestic resellers - MOQ 50 direct often still wins on spec control and batch documentation for food programs.
Revision control after sample: use numbered change list ("Rev B: add 1° draft east wall; Rev C: reduce logo 0.2 mm") - not "make it better" emails. Each rev may restart prototype clock if master geometry changes substantially. Approve rev in writing to same thread as original quote for audit trail.
Parallel SKUs in one season (Valentine + Easter) should still be separate brief rows - combined vague brief delays both. WhatsApp photos acceptable for sample failure feedback if email follows with summary and approval state. RUUIPON Shenzhen team works across time zones - send complete brief before your EOD to maximize overlap with ~24 hour quote turnaround.
Legal entity on PO should match brand owner receiving food documentation - mismatched buyer name on FDA letter causes retail onboarding delays unrelated to mold quality. Include ship-to and bill-to on first quote request for freight estimate accuracy on MOQ 50 production shipment.
Design agencies briefing on behalf of end client should cc brand owner on spec approval - agency CAD approval without client sign-off causes production MOQ 50 disputes when marketing changes logo week after sample. Single thread with all stakeholders copied saves remakes.
Third-party inspection before production release is optional for most MOQ 50 craft and food clients but common in larger OEM programs - specify if you need pre-shipment cavity depth report on production tray. Adds timeline but reduces import QC surprise at your dock.
Language preference on quote: English briefs with mm dimensions avoid unit confusion; include inch equivalents in parentheses if your US team thinks in inches but CAD is mm - do not mix unitless numbers. Clarify Incoterms DAP vs FOB on first PO for freight expectation alignment.
Attach company VAT/EORI only when needed for commercial invoice - not required for first quote but speeds production invoice if EU buyer. Sample shipping address distinct from production ship-to avoids prototype delivered to wrong warehouse during company move week.
Red-line CAD markup on PDF screenshot beats vague "make logo bigger" feedback - circle area, dimension desired change in mm, attach to reply email with subject matching original quote thread for factory traceability.
Confirm payment currency and bank details on written PO only - quote email estimates are not invoices. Production MOQ 50 starts after sample approval and PO receipt per agreed terms in quote PDF.
Frequently Asked Questions
What is the fastest way to get a quote?
One email with STEP/STL, material, weight, cavity target, market - response ~24 hours.
Do I need a prototype?
Yes for new geometry - 3-7 days. Reorders of unchanged design skip to production MOQ 50.
Minimum order quantity?
MOQ 50 production pieces per design.
Can you sign an NDA?
Discuss on first contact with product description - CAD under confidentiality is routine.
No CAD - can you design from sketch?
Possible for simple shapes; complex logos need 3D from your designer or our quoting team assessment.
Which food cert do I need?
US: FDA-compliant silicone docs; EU/Germany: LFGB-tested. See FDA vs LFGB.
What happens after I approve sample?
Production order, MOQ 50+, typical ship 2-4 weeks - see prototype to production.
Ready to order custom silicone molds?
Free quote for OEM/ODM projects. MOQ 20 · Prototype 3-7 days · FDA/LFGB available.