MOQ 20 pcs · 3D design $50 USD · Prototype 3-7 days

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RUUIPON

Custom RTV Casting Molds and HTV/HCR Compression Molds

Need a pour cavity (RTV) or a heated compression tool (HTV/HCR)? RUUIPON sells mold tooling in Shenzhen, not finished HTV/HCR parts. RTV: photos, sketch, or CAD, then a 3D-printed pattern, often a temporary silicone flip, a resin production mother, then batch RTV. MOQ 20 per design; prototype usually 3-7 business days after CAD lock; free DFM; CAD revision about USD 50 when we edit your 3D. HTV/HCR: steel/compression tooling for solid silicone. Free DFM + RFQ on the tool.

Send photos, a sketch, or CAD. Name the object - pour cavity or compression tool - for a free DFM review.

Send photos or CADBrowse products
2018
Shenzhen shop
2 routes
RTV cavity or HTV/HCR tool
MOQ 20
RTV casting molds
Free DFM
Both tooling routes
Custom silicone molds

What you can buy here

Two mold-tooling routes - pick the object first

A pour cavity and a heated compression tool are different POs. Finished HTV/HCR parts are a third object and stay on wydsilicone.com.

Route 1

RTV silicone casting molds

You buy a pour cavity.

Send photos, a sketch, or CAD. After CAD lock we typically 3D-print a pattern, often flip a temporary silicone tool from that print, cast a resin production mother, then pour batch RTV silicone casting molds. MOQ 20 per design; prototype usually 3-7 business days after CAD lock. DFM review is free; CAD revision about USD 50 when we edit your 3D.

  1. 1Photos / sketch / CAD
  2. 23D-printed pattern
  3. 3Temporary silicone flip (when needed)
  4. 4Resin production mother
  5. 5Batch RTV molds
  6. 6MOQ 20
Send RTV RFQRTV vs HTV guide

Route 2

HTV/HCR compression molds

You buy steel/compression tooling for solid silicone (HCR/HTV).

Free DFM and an RFQ on the tool - not a finished-part PO. Do not use the RTV MOQ 20 or 3-7 day prototype numbers on this route. Lead time, quantity, and cycle life are confirmed after DFM on the actual tool. Finished HTV/HCR parts stay on wydsilicone.com.

  1. 1Steel / compression tool
  2. 2Solid silicone (HCR/HTV)
  3. 3Free DFM
  4. 4RFQ on the tool
  5. 5Finished parts stay on WYD
Send HTV/HCR mold RFQRTV vs HTV guide

Shenzhen workshop since 2018

Real factory photos from RUUIPON

Shots from our Bao'an workshop — where custom silicone molds are made. No stock photos.

Production floor inside RUUIPON custom silicone mold factory in Shenzhen
Production floor
Production equipment for custom silicone molds at RUUIPON Shenzhen factory
Production equipment
Close-up of precision mold tooling at RUUIPON silicone mold manufacturer
Precision tooling

Documents on request

ISO 9001 plus compound test reports — not a blanket factory stamp

Food-contact jobs get the FDA / LFGB pack that matches the compound and lot you order. We do not market RUUIPON as an "FDA-approved factory." Name US retail, EU, or craft-only on the RFQ.

Business license of Shenzhen Ruipeng Silicone Products Technology Co., Ltd. Unified Social Credit Code 91440300MA5FAXCN9W. Legal representative 杨开乐.

Business license

Shenzhen Ruipeng Silicone Products Technology Co., Ltd. (深圳市锐鹏硅胶制品科技有限公司). Unified Social Credit Code 91440300MA5FAXCN9W. Legal representative 杨开乐. Issued 2018-09-19. Not a sister-company (WYD) license.

ISO 9001 quality management certificate for RUUIPON silicone mold manufacturing

ISO 9001

Historical quality management system certificate scan. Compound and lot documents are issued separately on request.

FDA test report for mixed silicone rubber compound used in RUUIPON food-contact molds

FDA compound report

Lab report on mixed silicone compound — not an FDA-approved factory claim. Issued on food-contact RFQs.

See remaining compound reports on About

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.

RUUIPON team reviewing silicone mold brochure with a buyer at Chinaplas exhibition
Chinaplas buyer meeting
RUUIPON discussing custom silicone mold specs with international customers at exhibition
On-site RFQ notes
RUUIPON staff coordinating with partners at an international silicone mold trade show
Trade-show coordination

Proof in motion

Demold clips from real molds

Short factory phone clips - compressed for the web. Tap Play to load a clip.

Mahjong demold

Clean release - detail stays in the cast, not stuck in the cavity.

Peony / mousse finish

Deep petal detail from platinum-cure silicone tooling.

Handmade soap cast

Finished soap from custom cavities — edge and logo hold.

Imperial-seal mousse

Sharp emboss for dessert and confectionery molds.

What you buy on this site

What you're actually buying

You can buy two kinds of mold tooling here. Route 1 is a custom RTV silicone casting mold: photos, sketch, or CAD, then a 3D-printed pattern, often a temporary silicone flip, a resin production mother, then batch RTV. You dump ice, gummy, chocolate, popsicle, plaster, resin, candle, soap, or sculpture into that cavity. Route 2 is an HTV/HCR compression mold - the steel/compression tool for solid silicone. Free DFM + RFQ on that tool. A carton of finished HTV/HCR parts is a different PO and belongs on wydsilicone.com.

RTV pour-cavity chain

  1. 1Photos / sketch / CAD
  2. 23D-printed pattern
  3. 3Temporary silicone flip (when needed)
  4. 4Resin production mother
  5. 5Batch RTV molds
  6. 6MOQ 20

HTV/HCR compression-mold RFQ

  1. 1Steel / compression tool
  2. 2Solid silicone (HCR/HTV)
  3. 3Free DFM
  4. 4RFQ on the tool
  5. 5Finished parts stay on WYD
RUUIPON poured RTV tooling on the Shenzhen line
Shop-floor mold tooling. Not a catalog tray and not a finished HTV/HCR part.

What that cavity dumps

Chocolate custom silicone mold

Chocolate

Pectin / gummy custom silicone mold

Pectin / gummy

Resin custom silicone mold

Resin

Wax / candle custom silicone mold

Wax / candle

Soap custom silicone mold

Soap

Most inquiries are not "make this shape." They're:

  • 1

    Will a sticky pectin gummy leave without stretching the tray?

  • 2

    How deep can a logo go before thin letters tear on demold?

  • 3

    Does this deep candle or resin part need a one-piece glove, a keyed split, or a skin plus mother mold?

  • 4

    How many cavities fit before the sheet sags when every pocket is full?

  • 5

    Which Shore A range flexes enough without losing size?

  • 6

    Does this food job need 177.2600, LFGB, both, or neither?

Those are cheaper to settle before anyone weighs A/B. We work from photos, a sketch, a sample, or CAD. STEP/STL helps when millimetres and a split line matter.

Don't mix three quotes

Common mix-up: RTV vs HTV vs LSR

A pour cavity, a heated compression tool, and a finished silicone part are three objects. A Shore number without the object is noise.

CompareRTV mold (this site)HTV/HCR mold (this site)Finished parts
ObjectPour cavitySteel/compression toolVulcanized article
ProcessLiquid A/B around a resin production motherHeated compression of HCR/HTVHCR press or LSR injection
QuoteRUUIPON RTV RFQRUUIPON mold RFQwydsilicone.com
Open RTV vs HTV guide
RTV poured cavity versus steel or HTV part tooling
RTV is the pour cavity. HTV/HCR on this site is the compression tool. Finished parts stay on WYD.

Buyer checklist

What to ask when you're buying this mold

  1. 01 · Object

    Is the quote for a poured RTV cavity, an HTV/HCR compression mold (the tool), or a finished silicone part?

  2. 02 · Master

    Who makes and who keeps the master, and may the shop keep a copy for recasts?

  3. 03 · Structure

    One-piece, keyed split, inner core - and is there a rigid jacket?

  4. 04 · Chemistry

    Platinum or tin, and which food-contact path if the face touches food (177.2600 and/or LFGB / BfR XV)?

  5. 05 · Volume

    Cavity grams or fill weight, first lot, monthly dumps, and is a recast of the skin in the price?

If the quote only says "custom silicone mold" and a number, you're not comparing the same job. Paying a tooling charge does not, by itself, give you unrestricted ownership of master, jacket, or CAD.

Who this site is for

Who buys from RUUIPON

  • Etsy & Shopify sellers

    Launch a signature shape without factory MOQs of 1,000-5,000. First trays start at MOQ 20 per design.

  • Food & confectionery brands

    Logo chocolate bars, branded gummies, and bakery molds in food-contact platinum when the pour needs it. Docs follow the finished article and market, not a factory stamp.

  • Candle, soap & fragrance makers

    Pillar, container, wax melt, and soap molds engineered for clean release and repeat pours.

  • OEM / private-label buyers

    DFM review, prototype approval, then production tooling with QC and global shipping options.

Multi-cavity pectin gummy tray example

Worked example

12-cavity 18 mm bear, about 2,000 dumps a month

Food-contact pectin, target about 4.0 g. The RTV job is a CNC or fully post-cured SLA master, platinum A/B, Shore 10A-20A skin, rigid jacket so the loaded edge does not sag 0.5-1.5 mm, then a water-volume map before MOQ 20. A recast of the face after a logo change is usually cheaper than a new master if the jacket still keys.

A PDF with heaters and a cold-runner is a molded part. It will not dump pectin.

By pour

Custom mold categories by pour

Pick the category by what leaves the cavity. Full cards sit in Applications below.

Path

From drawing to working mold

This path is the RTV pour-cavity job. HTV/HCR compression molds are a separate free-DFM RFQ - do not copy these MOQ or prototype days onto that tool.

  1. 1

    Send photos or CAD

    Photos, a sketch, a sample, or CAD. Free DFM on that file.

  2. 2

    DFM

    Draft, undercuts, wall, layout, logo depth, pour.

  3. 3

    Approve cavity

    Simple 3D is $50 when that scope applies.

  4. 4

    Prototype

    Usually 3-7 business days after CAD lock.

  5. 5

    Production

    MOQ 20 pieces per design after sample approval.

Wrong quote

When this homepage is the wrong quote

Thousands of vulcanized silicone parts, LSR injection jobs, or high-volume finished gummy depositing cartons belong on a parts OEM or wydsilicone.com. A catalog ice cube that already matches the pocket is also the wrong spend. An HTV/HCR compression mold — the steel/compression tool — stays on this RFQ.

Geometry can override quantity: a one-off deep-undercut resin figurine is still RTV at 20 pieces; 10,000 identical spatulas are finished parts, not a RUUIPON mold PO.

Do not send

We would not take a generic free-quote brief

  • A photo titled "silicone mold" with no pour and no quantity.
  • Raising Shore A first to stiffen a floppy sheet - add a jacket or cut cavities.
  • An LSR spatula PDF as 177.2600 on this RTV cavity.
  • Cutting LSR steel "so we can scale later" while you still need to dump pectin.

Structure

RUUIPON mold structure decision

Walk the three questions. Do not paste a mermaid chart into the RFQ.

  1. Ask 1

    Flat back?

    Yes: Open-back RTV

    No: Check undercuts next

  2. Ask 2

    Deep undercuts?

    Yes: Two-part, plug, or inner core

    No: Open-back can still peel

  3. Ask 3

    Large wet dump or soft Shore?

    Yes: Mother mold / jacket

    No: Tiny shallow tray can stand alone

Numbers we actually use

Typical shop values

Typical shop values, not a named lot.

Shop
Bao'an, Shenzhen; founded 2018
MOQ
20 pieces per design after sample
Prototype
3-7 business days after CAD lock
Simple 3D
$50 when that scope applies
Production
Usually 2-4 weeks
Cavity Shore
10A-20A skin + jacket when loaded
Mix
Platinum 1:1 or 10:1; vacuum degas
Platinum shrink
About 0.1-0.3% after full cure
Loaded-edge sag
About 0.5-1.5 mm if unsupported
Outer-row gummy
Often 3-6% heavy if the tray sags

Applications

Custom silicone mold solutions by application

Whether you cast resin, pour candles, mold gummies, or bake themed desserts - we engineer the right silicone grade, Shore A hardness, and cavity layout.

Colored gummy bears. Photo: Unsplash. Not a RUUIPON factory shot.

Custom Silicone Gummy Molds

When sticky pectin stretches soft trays and piece weight drifts, you need custom silicone gummy molds cut for your grams, Shore A, and FDA/LFGB path - MOQ 20, prototype in 3-7 days.

View product →
Resin Molds

Custom Silicone Resin Molds

Custom epoxy and UV resin molds at MOQ 20 - Shore A 20-40 for undercuts and trays, prototype in 3-7 days, platinum-cure production tooling.

View product →
Chocolate Molds

Custom Silicone Chocolate Molds

Food-grade custom chocolate molds at MOQ 20 - logo bars, bonbons, cocoa bombs, FDA/LFGB docs, prototype in 3-7 days for seasonal launches.

View product →
Candle Molds

Custom Silicone Candle Molds

Custom candle molds at MOQ 20 - soy/paraffin Shore A 30-40, heat-resistant platinum, prototype pour in 3-7 days for pillars and figurines.

View product →
Muffins in a baking pan. Photo: Unsplash. Not a RUUIPON factory shot.

Custom Silicone Baking Molds

Food-grade custom baking molds at MOQ 20 - Shore A 35-45, FDA/LFGB docs, prototype bake in 3-7 days for seasonal trays.

View product →
Silicone soap mold with finished bars

Custom Silicone Soap Molds

Custom soap molds at MOQ 20 - Shore A 25-35 for clean peel, logo bars and loaves, prototype in 3-7 days.

View product →
Ice cubes in a glass. Photo: Unsplash. Not a RUUIPON factory shot.

Custom Silicone Ice Molds

Food-grade custom ice cube, sphere, and branded ice molds for bars, restaurants, and beverage brands - FDA/LFGB available, MOQ 20.

View product →
Wax Melt Molds

Custom Silicone Wax Melt Molds

Custom wax melt molds at MOQ 20 - consistent cavity grams for clamshells, Shore A 30-40, prototype pour in 3-7 days.

View product →
Multi-cavity heart gummy tray

Multi-Cavity Silicone Molds

Multi-cavity trays sized for fill weight and tray stiffness - not the highest cavity count on a floppy sheet. MOQ 20 per design.

View product →

Route decision

Pour cavity, compression tool, or finished parts

  • RTV silicone casting molds stay here

    Plaster, resin, candle, soap, sculpture, figurine, and food casting trays. You buy the pour cavity. Photos, sketch, or CAD → 3D-printed pattern → (often) temporary silicone flip → resin production mother → batch RTV. Production is MOQ 20 per design after you approve the prototype.

  • HTV/HCR compression molds stay here

    Steel/compression tooling for solid silicone (HCR/HTV). Free DFM + RFQ on the tool. Do not apply RTV MOQ 20 or the 3-7 day prototype window to this route.

  • Name the dump before Shore on an RTV job

    Platinum-cure for most crafts. Food-contact papers may be available for the selected compound and market - a drum PDF is not the finished tray.

  • Finished HTV/HCR parts go to WYD

    A gasket, pad, spatula, or carton of vulcanized parts is not a mold RFQ. That PO belongs on wydsilicone.com.

Finished HTV/HCR parts: wydsilicone.com. HTV/HCR compression molds stay on this RFQ.

Process

How custom mold manufacturing works

  1. 1

    Share your design - sketch, photo, sample, or 3D file. Name pour cavity or compression tool.

  2. 2

    Free DFM review, then quote ~24h on a complete RTV RFQ. HTV/HCR mold quotes follow DFM on the tool.

  3. 3

    RTV after CAD lock: 3D-printed pattern, often a temporary silicone flip, resin production mother, then batch RTV - prototype usually 3-7 business days

  4. 4

    RTV production at MOQ 20 after sample approval. HTV/HCR quantity is confirmed after DFM - not copied from the RTV card.

  5. 5

    Ship worldwide - FOB/EXW or DDP

See full process

Materials & quality

Silicone grades matched to what you pour

The right silicone grade and Shore A hardness protect detail, demolding speed, and food-contact compliance - we specify both during DFM, not after tooling.

Platinum-cure silicone

Low shrinkage, long shelf life, and clean release - preferred for resin, crafts, and most production molds.

Food-grade silicone

For chocolate, candy, baking, and ice contact. Food-contact material and test documentation may be available for the selected compound and market.

Shore A hardness matching

Softer grades for deep undercuts; firmer grades for sharp edges, multi-cavity trays, and high-cycle demolding.

Multi-cavity & production tooling

From single-cavity prototypes to multi-cavity trays sized for your fill weight and packaging line.

RFQ inputs

What to send for a usable mold quote

A quote needs a file (or sketch/photo), the casting material, and a quantity. Include as much of the checklist below as you can - even a sketch is enough to start CAD.

1

Design file or reference

Photos, a sketch, a sample, or CAD (STEP/STL, AI, PDF). DFM review on that file is free. CAD modification - revising your 3D - is about USD 50 per design when that scope applies. Name pour cavity (RTV) or compression tool (HTV/HCR).

2

Target material to cast or press

RTV: resin, chocolate, gummy, wax, soap, dough, plaster, or another compound you pour. HTV/HCR: the solid silicone compound the steel tool will press - not a finished-part carton.

3

Quantity & timeline

RTV: prototype only, first production run, or ongoing OEM - MOQ 20 after sample. HTV/HCR: name the tool quantity you need; we confirm after DFM. Share target ship date if you have one.

4

Certification needs

Finished-article path: 21 CFR 177.2600, LFGB sections 30/31, both, or craft-only. Raw compound PDFs are not a finished-mold badge.

Send RFQ with files

Solutions

RTV casting molds by application

All solutions →

Food & Confectionery

Food-contact custom molds for chocolate, candy, gummy, and bakery brands. Docs may apply to the finished article and market - not a factory badge.

Crafts & Resin

Precision resin and craft molds for makers, Etsy sellers, and product designers scaling from prototype to small production.

Candle & Soap

Custom RTV molds for pillar candles, wax melts, and soap bars. Photos/sketch/CAD, then 3D-print, often a silicone flip, resin production mother, then batch RTV. MOQ 20.

OEM & Small Business

OEM/ODM mold design for Shopify, Etsy, and DTC brands - low MOQ, sample-before-production, global shipping.

Hospitality & Beverage

Branded ice, drink garnish molds, and food-safe silicone tools for hotels, bars, restaurants, and beverage brands.

Decision guide

Custom silicone molds vs off-the-shelf

Off-the-shelf molds win on speed and low upfront cost for generic shapes. Custom molds win when branding, cavity consistency, or production layout matters - logo bars, signature resin forms, multi-cavity trays matched to fill weight, and private-label packaging.

If you are launching a differentiated product or scaling past one-off crafts, custom tooling usually pays back in fewer rejects, clearer brand identity, and repeatable output.

Read the full comparison →
FactorCustomOff-the-shelf
Brand / logoYesRarely
MOQFrom 20 pcsUsually 1 unit
Cavity consistencyEngineeredVaries by SKU
Lead timePrototype 3-7 daysImmediate if in stock
Best forLaunch & OEMGeneric crafts

FAQ

Frequently asked questions about custom silicone molds

Straight answers on MOQ, lead time, food-grade options, files, and shipping - the questions buyers ask before sending an RFQ.

What is the MOQ for custom silicone molds?

For RTV silicone casting molds, the standard MOQ is 20 pieces per design. That number does not apply to HTV/HCR compression molds - quantity for that tool is confirmed after DFM. Smaller RTV test runs may be possible - contact us with project details.

How long does a custom silicone mold take?

RTV prototypes typically ship in 3-7 business days after CAD lock. RTV production is usually 2-4 weeks depending on cavities and quantity. HTV/HCR compression-mold lead time is confirmed after DFM on the actual tool - do not use the RTV prototype window for that route.

Do you make HTV/HCR compression molds or finished silicone parts?

We quote HTV/HCR compression molds - the steel/compression tool. Free DFM on that RFQ. Finished HTV/HCR parts stay on wydsilicone.com. Do not send a parts carton PO as a mold RFQ.

Can you make food-safe silicone molds?

Platinum-cure is the chemistry we spec for food cavities. That is not an FDA-approved factory claim. Food-contact material and test documentation may be available depending on the selected material and destination market.

What files do I need for a quote?

Photos, a sketch, a sample, or CAD. STEP/STL helps when millimetres matter; a sketch or measured photos can start DFM. Name pour cavity or compression tool, plus the material and quantity.

Custom silicone molds vs off-the-shelf - which should I buy?

Buy off-the-shelf for generic shapes and fast retail availability. Choose custom when you need a logo, unique geometry, consistent cavity weight, or brand differentiation. See our full comparison guide on the blog.

Do you ship internationally?

Yes. We ship worldwide from Shenzhen with FOB, EXW, or DDP options. Lead times and duties depend on destination and Incoterms.

What silicone hardness (Shore A) do I need?

It depends on undercuts, detail, and demolding force. Soft grades suit deep undercuts; firmer grades suit sharp edges and multi-cavity production trays. We recommend hardness during DFM review.

Do you compete with large gummy factories?

RUUIPON quotes mold tooling: RTV pour cavities (MOQ 20) and HTV/HCR compression molds (free DFM + RFQ). High-volume gummy depositing parts and finished HTV articles stay on wydsilicone.com.

Learn

Shop notes on structure, dumps, and RFQ files

Start with the failure that matches your job, then send the file, the dump, and the quantity.

View all articles →

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How Much Does 3D Modeling Add to a Silicone Mold Project?

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Why Two-Part, Mother-Mold and High-Cavity RTV Tools Cost More

Why two-part molds, removable cores, FRP mother molds and high-cavity RTV trays cost more-and when the added structure is actually justified.

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What Should Be Included in a Silicone Mold Tooling or Setup Fee?

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Total Cost of Ownership for Custom Silicone Molds (Not Just Unit Price)

Compare custom silicone molds by cost per good casting, not only unit price. Include usable cycles, operator labor, rejects, downtime, freight and replacement cost.

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DDP Shipping Custom Silicone Molds From China to the USA or Europe

DDP, DAP, FOB and EXW for custom silicone molds explained: volumetric weight, carton size, deformation-safe packing, destination data and when freight must be re-quoted.

2026-09-03 · 12 min

STL vs STEP vs OBJ for Custom Silicone Mold Development

Which 3D file should you send for a custom silicone mold? STEP is best for editable dimensions, STL for meshes/printing, and OBJ for sculpted/textured geometry.

Start with the mold tooling you need - RTV cavity or HTV/HCR tool

Send photos, a sketch, or CAD and name the object. RTV: 3D-printed pattern, often a temporary silicone flip, resin production mother, then batch RTV. MOQ 20; prototype usually 3-7 business days after CAD lock; free DFM; CAD revision about USD 50. HTV/HCR compression molds: free DFM + RFQ on the steel/compression tool. Finished parts stay on wydsilicone.com.

Send photos or CADSee Our Process

Custom RTV casting molds and HTV/HCR compression molds