Silicone Plastique & CopyFlex Mould Making By Make Your Own Molds

Published by Jamie on

Have you ever looked for a mould that would be ideal for the cake you are making but no mould is quite right or too expensive? Well hold onto your sugar paste, a very well respected American company has invented a product to make your own moulds, Silicone Plastique.

There are two easy ways of making your own Silicone mould:


Silicone Plastique Mould Making Putty

A mould making putty that consists of two parts, a Blue part (Part A) and a white part (Part B). With a consistency of cookie dough it is easy to mix, take equal parts of Part A and Part B and work them together with your hands until you achieve a uniformed colour (all blue).

Once this has been accomplished you have around 15 minutes to work with it. Take a small amount and evenly cover your object, especially around the edge of the item (using a clear flat piece of plastic is great for this). When you have built up a good layer then build another layer and so on, flatten off at the top to make a nice base for the mould to stand itself on.

Leave at room temperature for around 1hour 30mins for the mould to cure.

It’s worth noting that if you have an item that is too thin to make a perfect mould of then you would need to use additional products such as the Safe-D-Clay. The principle of it is you would double the thickness of the item when using the Silicone Plastique to make a deeper mould.

Why not take some trinkets, Vintage brooches or lego pieces? The possibilities are endless.

Silicone Plastique is available in:

200g, 400g and bulk buy 1KG and 5KG.

Typically 453.59g of Silicone Plastique covers an area 8″ x 8″ x 1/4″ thick



CopyFlex Liquid Silicone

Also made by Make Your Own Molds, CopyFlex is a unique liquid Silicone that’s is used similarly to the Silicone Plastique. CopyFlex has two parts which you mix together in the same quantities (50g Part A and 50g Part B for example). Any porous or buoyant objects must be sealed and anchored with Seal-Dit or Anchor-Dit respectively.

Take a food safe container and anchor (with Anchor- Dit) your object to the bottom of it. Mix a small amount of CopyFlex initially so that you can pre-coat the item you would like to make a mould of. Using a natural bristle artist brush, do not over coat. The idea is you make a thin skin layer over the item to embed the detail and remove any air.

You can now mix the larger amount of CopyFlex to cover your skin layer. Again remember to mix a ratio of 1:1 of Part A and Part B.

From a height of around 12″ fill 1/4 of your tub with the larger amount of CopyFlex, this allows for the CopyFlex to stretch as it falls.

Once the liquid has levelled leave to cure at room temperature for around 4 hours. To check if the CopyFlex has set it is best to press a coins edge into the top, if there is no imprint then the mould has finished curing.

The best thing about CopyFlex is that it makes a perfect mould and levels to make a flat base.

CopyFlex is available in 500g and 1KG tubs (1 x 250g of each part).

Typically 453.59g of CopyFlex covers an area 9 1/2″ x 9 1/2″ x 1/4″ thick.