Q & A: Medium Hardness Tin Cured Liquid Silicone Rubber for Mold Making (20 comments)

I have to make a silicone mold of a plaster sculpture. Is the sculpture in danger of being ruined?

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In view of your situation, I give you the following suggestions: Use silicone with suitable hardness. Use a mold release agent. Use brush-on process.

Is it possible to make a sculpture mold out of plasticine and pour epoxy resin into it?

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You can try and see the effect, but I think the tiny details on the silicone replica model can't be compared with the plasticine.

Hi, to make a pyramid mold base length 20cm Width 20cm height 20cm how much liquid silicone material do you need? And what material can I use for the mold?

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Calculate the volume of your pyramid (if the inside is empty, remove the volume of the void) and then multiply it by the specific gravity of the product (calculate 1.2g/cm3 should be fine), in the end either you lack a little or you have a little left over, however you will have an idea close enough to reality.

To create molds to be used with cold porcelain, is the RTV3115 or the RTV-3120 better? Thank you.

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Our tin-cured silicone is sure to be fine for replicating cold porcelain objects. You can choose the hardness according to the size specifications. Generally speaking, it is easier to open the mold if you choose low-hardness silicone for small sizes.

So how can I prolong the life of the silicone mold?

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Here are some tips for extending the life of your silicone molds: 1. Store your molds in a cool, dry place. 2. Avoid exposing your molds to extreme temperatures or sunlight. 3. Clean your molds thoroughly after each use. 4. Use a mold release agent to help prevent your molds from sticking. 5. Do not overfill your molds. 6. Be careful not to damage your molds when removing your casts.

How many times can a silicone mold be used?

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The service life of silicone molds depends on many factors. How complex is the pattern of the mold? How thick or thin is the mold? What material is cast in the mold? How large is the mold? Are molds properly stored?

Can I melt damaged silicone molds and make new molds for reuse?

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Unfortunately, once rtv liquid silicone has cured, it is a permanent rubber and cannot be dissolved or melted to make new molds. As such, silicone molds should be considered permanent.

Will the silicone in this product stick together if I use it to create a two-part mold?

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Yes, you can make two-part molds with all of our tin cure silicone. To prevent the silicone from sticking together, you will need to use Vaseline as a release agent. Fully cured silicone will not stick together.

I've been using this liquid silicone for mold making for my art projects and it's been fantastic. The results are always consistent and the molds come out perfectly every time.

Is your product suitable for casting resin?

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Our tin-cured silicones are very high resistant to polyurethane resins, even to those curing by a strong exothermic reaction.