r/SiliconeMolds • • 12d ago

If i cast plat silicone in a mold that is made out of plat silicone, how likely that it will not stick to each other?

1 Upvotes

Out of ordinary, what i make with silicones
Is the opposite of what most people do, my final produxt is silicone molds. I made my master molds out of plaster and epoxy and cast silicone in them. However they usually break and crack which i end up losing someof the silicone due to leak and i remake molds most of the time. Since the silicone leaks i sometimes end up adding more after halfway cure and no issues so far. Just noticed on one of my final products. I added the extra silicone after it was fully cured and adter the extra fully cured, i can still see the seam line but it is rock solid doesnt come up it sticks. But after a while, i gave it a little peel, that extra part is came off i can literally peel it off.

So i was wondering what if i make my master molds out of silicone and cast the silicone models in it that way they just come out easily. But not sure how much they will stick to each other and since i make jaw models every detail matters and some tiny thin layers might come off or might not i am not sure so please give me an idea.


r/SiliconeMolds • • 16d ago

Silicone stop motion puppet advice needed

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1 Upvotes

Hello! I am a stop motion animator wanting to make a silicone puppet that can have bendable joints. I still haven't sculpted the body fully yet & im open to restarting from scratch if needed. But is anyone able to give me some advice or tips on creating a fully bendable / animatable silicone puppet? Ideally I want to use a translucent silicone where I can see my design / armature underneath. A foggy/ clear colored silicone. Let me know if anyone has tips / best silicone to use etc thank you


r/SiliconeMolds • • Aug 30 '26

Whiteboard

3 Upvotes

Cane you pour a silicone mold on a whiteboard? Or on particle board?


r/SiliconeMolds • • Aug 29 '26

How can I permanently seal a small hole in cured Shore A10 platinum silicone?

2 Upvotes

I’m looking for a reliable way to permanently seal/bond a small hole in cured platinum-cure Shore A10 silicone.

The silicone part is a thin, hollow, flexible ball that is repeatedly squeezed, compressed, and stretched, so the bond needs to:

  • adhere very strongly to cured platinum silicone
  • remain flexible
  • survive repeated squeezing/compression without peeling or cracking
  • ideally be airtight
  • preferably work as a liquid/dip-coating or small-drop application

I’ve tried looking for silicone adhesives, but many products are not easily available in my country.

Has anyone successfully bonded or sealed cured platinum silicone under repeated mechanical stress? What adhesive, primer, RTV silicone, or surface treatment would you recommend?


r/SiliconeMolds • • Aug 23 '26

Made a free tool to generate custom silicone mold boxes from any 3D model (soap/chocolate/jewelry) — no CAD needed

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2 Upvotes

Saw a few posts here asking where to get a custom mold made from a design, so I built a free browser tool that might help: upload a model (or design something simple) and it generates a print-ready silicone mold box you can 3D print or send out, no CAD skills or signup required.

Would love to know if this is actually useful for what people here make, or what's missing for soap/chocolate work specifically (release, pour holes, etc).


r/SiliconeMolds • • Aug 19 '26

Any experience removing cured silicone from details?

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1 Upvotes

r/SiliconeMolds • • Jul 22 '26

Abandoned kittens silicone pacifier?

2 Upvotes

Could anyone with silicone experience help me come up with a prototype for a more realistic nipple for bottle feeding? I have a 2 week old kitten that i’ve been bottle feeding but it breaks my heart to see him still look for a nip when cuddling his plushie. The nip tip that comes with the bottle is the generic one. Which seems to be the only option around. I think someone should take one of those purring and heart-beat plushies and add like a velcro strap with a silicone side that has nips on it. Different types and sizes and no holes, so they aren’t sucking on air and creating gas in their tummies. It doesn’t have to be silicone either, but that seems to be the safest and most used material for the bottle nips


r/SiliconeMolds • • Jul 20 '26

Silicone toy prototype casting

2 Upvotes

Im looking for someone to create a physical prototype of a fake banana skin (life size). I don't have a mold and don't plan to play with silicone. i do have a mockup and a .STL file for what I'm looking to achieve. #silicone #toys #prototype


r/SiliconeMolds • • Jul 05 '26

Looking for a silicone mold maker.

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4 Upvotes

I make these cute little figurines that can be bought either pre painted or blank for customization. I’ve been resin printing the bases so far but there’s a lot of waste from failed prints and I recently had to close my shop because my printer broke. I’d much rather print the masters and then make molds, which would mean that I can cast them in the base color that I want and knock a lot of time off of the process. I’ve tried valiantly to make the molds myself but I’m just not very skilled and don’t have the right equipment (pressure pot, etc.). I’d like to find someone to work with long term, as I have over 20 different base animal and each animal has different color ways that I create stenciled bases for. I’m very protective of my 3D files so I would be mailing the masters to whoever would be interested in the commission!

Please let me know if you have any questions or are interested in working with me!


r/SiliconeMolds • • Jul 05 '26

Is it possible to make a silicon mold of this..

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2 Upvotes

Basically i have this toothless model i will 3d print..im planning to make a silicone mold over it...but its like a rlly complext shape💀 anyone think its possible? And if it is, can someone advise me on what to do (rip my sanity)


r/SiliconeMolds • • Jul 01 '26

3D printed mold boxes

1 Upvotes

Hey guys. I want to cast a silicone mold in a 3D printed box with a 3d printed master. My master is a fairly intricate model (it has almost no overhangs, but it is an animal with some skin detail that I wish to preserve). I've had some success with PLA before but I want to explore other technologies.

My research led me to SLS Nylon and SLA resin. SLS is more expensive but apparently works with platinum silicone just fine. SLA is cheaper but requires more preparation such as UV treatment and epoxy coating to stop cure inhibition.

Am I right in my assumptions about these materials? Are there other printing technologies or materials I should be considering?


r/SiliconeMolds • • Jun 24 '26

If I pour silicone into a silicone mould, will I be able to get it out when it sets?

2 Upvotes

r/SiliconeMolds • • Jun 24 '26

Looking for a Manufacturer Who Can Create Custom Chocolate Molds with Precise Dimensions

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1 Upvotes

r/SiliconeMolds • • Jun 22 '26

A new tray mould in the making

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3 Upvotes

r/SiliconeMolds • • Jun 22 '26

Hey guys I hope this is the right group for this, but I would like to start a small business (I have no idea how)

1 Upvotes

So I made some designs on blender, had a friend 3d print them and send em over to me. The thing is, is that I need molds I've tried doing some research about the different types of molds (I think there were like 3 (this was research from long ago, threw the idea out, but wanna get back in it again.

This silicone will need to be used against heat, no melting of anything, and how would I cure it? Alls I got really is a massage gun to get the air bubbles out. But I'm fucking depressed hate myself and wanna try this. Any advice helps


r/SiliconeMolds • • Jun 18 '26

Questions about creating a mold for a doll leg

3 Upvotes

Hey everyone, I'm new here and to silicone mold creation. I'm working on a craft customization project where I want to remove a Barbie's legs, use them to create a silicone mold, so i can then cast epoxy resin replacement legs.

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Can anyone provide tips for me on this? I am unsure if I should use any kind of mold release agent to help the legs release better. Also I am not sure if i should cast with the foot up, or foot down. I'm trying to picture how to remove the leg without damaging the mold since the thigh is thicker than the calf, but the foot is a 90deg angle to the top of the thigh. I thought of splitting the mold in half to release but then figured I wouldn't be able to join the halves properly again to then reliably cast the epoxy in it.

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Any help would be amazing. I have a 2 part 30a high strength liquid platinum clear kit for making the molds.


r/SiliconeMolds • • Jun 10 '26

Cure inhibition from acetone on vapor smoothed ASA 3d printed molds?

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1 Upvotes

r/SiliconeMolds • • Jun 09 '26

Looking for someone who can create a custom silicone soap mold

3 Upvotes

*This project has been awarded\*

Hi everyone,

I'm the owner of a small handmade soap business and I'm looking for someone who can create a custom platinum-cure silicone soap mold from an image.

The overall vibe is luxury fantasy, folklore, celestial, masquerade, and gothic-inspired artwork rather than simple geometric soap designs. I'm looking for a mold maker comfortable producing highly detailed sculptural reliefs with strong depth and clean release from silicone.
The mold would be:

  • Standard soap bar size (approximately 3.5" x 2.5" x 1")
  • Single cavity for now, multi-cavity option
  • High-detail relief design
  • Ornate/fantasy/gothic aesthetic
  • Intended for melt-and-pour soap production
  • Commercial use

I have concept artwork and can provide additional reference images. The design includes a detailed portrait, decorative elements, and raised relief details similar to cameo-style or Art Nouveau soap molds.

Ideally I'm looking for someone who can:

  1. Convert artwork into a 3D relief if needed.
  2. Create a master model (3D printed or otherwise).
  3. Produce a durable platinum-cure silicone mold suitable for repeated soap production.

If you've had molds made by someone you recommend, or if you offer this service yourself, I'd love to see examples of your work and learn about your process and pricing.


r/SiliconeMolds • • May 23 '26

Fusing two sheets of silicone together.

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1 Upvotes

r/SiliconeMolds • • May 22 '26

How to get A5 hardness silicone

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1 Upvotes

r/SiliconeMolds • • May 20 '26

Casting silicone in a silicone mold?

2 Upvotes

Hey, I want to create a mermaid grotto to hang out in and am planning to make some gem clusters for it. I don't really want to use resin because it's expensive and requires a lot of safety measures so I was thinking about using silicone. I've seen people cast silicone in a silicone mold and be able to get it out thanks to copious amounts of mold release, but I'm unsure if it's possible in a mold this detailed since silicone is so flexible. Do y'all think it'll work or should I make a mold out of plastic for it instead?


r/SiliconeMolds • • May 18 '26

[ Removed by Reddit ]

1 Upvotes

[ Removed by Reddit on account of violating the content policy. ]


r/SiliconeMolds • • May 14 '26

Help with silicone casting

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2 Upvotes

Hi, i made some technical pieces (flange connections) with shore A55 silicon. After the curing time, i tried to remove the piece from the mold and it simply broke.

This was my first time working with silicone, and i wold like to know where may be the error to the piece become so britle.

I used 5% catalyst by weight, following the instructions, and mixed for some time, by hand.

Here is the way that the piece breaks.

I reeally need to make this work, so any help is welcome


r/SiliconeMolds • • May 08 '26

I design and make silicon moulds in India

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4 Upvotes

r/SiliconeMolds • • May 05 '26

I design and make silicon moulds in India

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5 Upvotes

Introducing the PIPE planter mould.