Q & A: Food Safe Soft Platinum Cured Liquid Silicone Rubber for Molds (17 comments)

Will the mold stay soft in the end? i need it to make candles

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Yes, liquid silicone is a soft elastomer material after curing. It is recommended that you choose silicone with a hardness of 5A or 10A for making candles.

Epoxy resin can be poured into the silicone mold.

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Of course, that's what it's used for.

Can I pop it in the oven to speed up curing?

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Yes, heating to 60-80°C (140-176°F) will help fully cure the silicone within a few tens of minutes. Note: Do not make the clear silicone mold too thin as it will tear easily.

How to calculate how much silicone is needed to make a silicone mold?

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Easy method to estimate silicone requirements: The easiest way to estimate your silicone requirements (by volume) is to place the model in the chosen container and fill it with water. The amount of water used will be close to the amount of liquid silicone you need. However, it is important to budget for 5-10% more waste. Please note: Be careful to remove all moisture and dry all parts thoroughly before pouring in the silicone.

What is the temperature range that the silicone mold made of your rtv silicone can withstand?

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Our platinum-cured silicone can withstand temperatures up to 250℃/482℉, so it can be baked in the oven. They are also unaffected and remain pliable after being placed in the freezer.

I'm so glad I found this product for making molds. It's so easy to use and the molds have held up perfectly even after multiple uses.

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Yes, molds made of liquid silicone are soft and tough, and can be reused many times.

Are your silicones safe for food contact?

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Yes, our addition cure silicone rubbers have been formulated to meet FDA and EU tests for use with Aqueous and Fatty foods.