How to Make Silicone Moulds with I–Gum Putty

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Best Method for Creating Silicone Moulds with I–Gum Putty

Making your own silicone moulds at home is straightforward with the right products. With I–Gum Non-Toxic Silicone Putty, you can create custom moulds tailored for resin projects and more. Here’s a simple guide to help you get started.

Mixing and Preparing the Putty

Begin by taking equal amounts of the two I–Gum components. Knead them together by hand until the colour is uniform—this should only take a minute or two. Work on a clean, dry surface and mix enough putty to fully cover your chosen item. The mixture remains workable for about 20 minutes, allowing time to shape and position it as needed.

Mould Application and Setting

Once thoroughly mixed, press the putty directly onto or around your model. Take care to smooth it out and eliminate air pockets, as these can affect your final mould’s detail. I–Gum putty sets within 20 to 40 minutes depending on the specific type, so avoid moving or disturbing the mould during this time. After it has solidified, you can gently remove the original item, leaving behind a detailed, flexible mould ready for casting resin or other materials.

Extra Tips for Success

I–Gum does not require a release agent thanks to its non-stick properties, simplifying cleanup and reducing waste.
If you make moulds frequently, Silicone Oil for Mould Protection and Easy Release can help keep moulds soft and extend their lifespan.
For best detail, ensure the object to be moulded is free of dust and grease before applying the putty.

When this Matters

This approach is ideal when you need quick, safe, and custom silicone moulds for small resin pieces, wax, or craft projects. It’s particularly useful for hobbyists who value ease of use and non-toxic materials.

Related guides

Why Does The Resin Stick To My Silicone Mould And How Can I Prevent It

Creating reliable silicone moulds with I–Gum putty helps you achieve clean resin releases and outstanding detail in your projects. For more help on preventing resin from sticking and optimising mould use, see our main guide: why resin sticks to silicone moulds.