Who Makes Custom Silicone Molds

A custom silicone mold maker is the shop that takes photos, a sketch, or CAD, freezes the millimetres, names the structure, and pours an RTV cavity you dump chocolate, gummy, resin, soap, plaster, or concrete into. After CAD lock we typically 3D-print a pattern, often flip a temporary silicone tool, cast a resin production mother, then pour batch RTV. The resin production mother is the hard production tool we pour against. It is not the 3D-printed pattern. Free DFM. CAD revision about USD 50 when we edit your 3D. Prototype usually 3-7 business days after CAD lock. Production MOQ 20 pieces per design. Bao'an, Shenzhen, since 2018.

RUUIPON also quotes HTV/HCR compression mold tooling - the steel/compression tool for solid silicone - as a second route. High-volume LSR cold-runner or steel gummy *part* tools are a different RFQ - ask us. If your email still says "master, box, keys, jacket" as the definition of the buy, you are listing shop furniture. The object is the cavity, or on the other route the compression tool.

Does not apply when you already run a steel chocolate or gummy tool, when you want a $10 stock SKU with unknown tin rubber, or when the "drawing" is an unscaled phone photo. Photos can start a conversation. They do not freeze millimetres. See from photos.

What we ship when you ask for a maker

Buyers type "mold makers" because they want a shop that will cut from this file, not a warehouse reprinting a bear tray. The deliverable on ruuipon.com is the RTV tool: a living resin production mother kept for recast, the batch RTV skin, and a jacket / mother-mold support shell when the geometry or the wet load needs it. We do not ship a molded silicone spatula, a baby product, or a cold-runner LSR article under this query.

The maker conversation starts with four objects on the bench:

1. 3D-printed pattern - a copy of the pocket used to start the chain. Not the production mother. Not the RTV mold you run.
2. Temporary silicone flip - an interim tool, often poured from the print. Not the batch cavity we ship.
3. Resin production mother - the hard tool we pour batch RTV against. Surface of that mother is surface of the cavity.
4. Batch RTV - open-back, two-part, plug, or core. Platinum for food-contact cavities; tin only when you have a craft reason and you said so on the RFQ.

A trader who forwards your PNG to three WeChat groups is not a maker. A CNC shop that mills aluminum and has never vacuum-degassed A/B is not this maker either. You need the shop that will still have the living mother when you reorder six months later. Paying a tooling charge does not hand you unrestricted ownership of that mother; say who archives it on the PO. Related: manufacturer page.

How a drawing becomes a structure call

We do not pick Shore A from a catalog chip and hope. We read the pocket. Photos, sketch, or CAD. Free DFM. CAD revision about USD 50 when we still have to model a shut face, a logo depth, or a fill line. A week of sculpture reconstruction is a separate quote, not that fifty dollars.

RUUIPON Mold Structure Decision

• Flat back that peels off a slab or tray? Open-back skin, often Shore 20A-40A for food trays or 10A-20A if you need a glove peel, plus a jacket / mother-mold support shell if the loaded edge will sag (typical unsupported sag 0.5-1.5 mm).
• Not flat. Deep undercuts that still peel without tearing the dump? One-piece glove can stay. If they will not peel, we go two-part, plug, or core.
• Large wet casting (concrete, deep PU)? The support shell is in the quote, not an afterthought after the first slump.

Draft on an RTV peel is not the same conversation as draft on a steel ejector. Soft rubber can wrap a zero-draft mascot you could never pull from HCR. That is not a reason to skip a split on a closed letter or a bail. ISO 3302-1 class (M2 is a common default on the 2D) is a rubber tolerance class on the drawing, not a marketing word for "precision maker."

Typical shop values

Reference values only. Confirm material-specific limits against the supplier’s technical data and agree project acceptance criteria before production.

Common mix-up: Amazon "maker" versus a shop that recasts

A lot of RFQs treat a three-day US warehouse SKU as a custom maker. That listing is a reprint. It will not take your serif depth, will not keep your living mother, and will not recast when the logo tears. The other mix-up is a steel/LSR parts factory quoting "custom silicone" against the same outline as your chocolate bar. Same silhouette, different object. If you need thousands of molded parts, that carton is a different RFQ - ask us. If you need twenty RTV trays of one design, that is us. If you need the HTV/HCR compression tool itself, that RFQ stays on RUUIPON - free DFM, numbers after DFM. Do not send the mold-tool RFQ as an HTV product RFQ here, or ask us for a high-volume LSR tool.

Worked example (anonymized)

An 8-cavity CP-soap loaf, about 90 mm long, logo on the face. The buyer sent a STEP with the loaf body locked and a PNG logo floating in email. We did not mix. Free DFM named an open-back platinum skin plus a jacket / mother-mold support shell so the loaf stayed square. CAD revision was USD 50 only for locking the logo into the face at 0.4 mm recessed. After CAD lock we 3D-printed the pattern, flipped a temporary silicone tool, cast the resin production mother, then poured batch RTV in the 3-7 business day window. First witness was a soap dump, not a photo of an empty cavity. Production released at MOQ 20 of that design. Harder Shore was never the lever. The structure call was.

Stay on this page / skip this page

Stay when you need a maker who will freeze your file, keep a living mother, and recast batch RTV - not a warehouse reprint.

Skip if you already know the shop sequence - go to how molds are made. Skip if the carton is vulcanized parts - a different RFQ - ask us. Skip if you only needed a catalog ice sheet that already matches the cube. An HTV/HCR compression mold stays on a RUUIPON RFQ; do not use this maker page to price that tool as a finished part.

We will not quote a unit price that does not name structure, mother source, or who archives the living mother. We will not quote an LSR or HCR part RFQ on this page and let an RTV glove stand in for steel. We will not freeze production from an unscaled photo. We will not call ISO 3302-1 "precision" in the PO - put the class on the 2D.

Related: manufacturer, how they are made, RTV vs HTV, mold cost, contact.

What to send

• Object: RTV pour cavity (this page), HTV/HCR compression tool (other RFQ), or finished part (an HTV product or mold RFQ here, or ask us if you need a high-volume LSR cold-runner tool)
• Photos, sketch, STL, or STEP; who keeps the living mother after the job
• What you dump and peak temperature
• Raised or recessed logo, depth in mm if you already know it
• Destination market if food-contact papers may apply (21 CFR 177.2600 extraction and/or LFGB sections 30/31)
• Quantity: prototype after CAD lock, then MOQ 20 of that design

Send that pack to [email protected] or contact. We will name the structure or tell you the file is not frozen. WhatsApp +86 135 3006 2969. We do not invent an FDA-approved factory stamp.

FAQ

Can a US warehouse that ships in three days make my custom mold? They can ship a stock cavity. A custom maker freezes your CAD, pours batch RTV against a living mother, and recasts when the face wears. Those are different POs.

Do you make the silicone part as well as the mold? Not on ruuipon.com. This site is the RTV cavity, or on the second route the HTV/HCR compression tool.

What if I only have a phone photo of a competitor tray? We can talk. We will not freeze millimetres from that photo. Free DFM. USD 50 when we still have to model. Production stays MOQ 20 per design after lock.

How fast is a prototype from a mold maker in Bao'an? Usually 3-7 business days after CAD lock. An unlocked logo or a missing shut face is not on that clock.

If I pay tooling, do I own the mother outright? A tooling charge is not unrestricted ownership. Write archive and recast rights on the PO. We keep the living mother so a reorder is a recast, not an archaeology project.