Making a Basic Mould Using Barnes Pinkysil

How To make a basic mould using Barnes Pinkysil

Silicone moulds come in all shapes and sizes. Complex moulds can have multiple parts, and these are used when a shape has no flat side. For this project we a making a simple one- piece mould. The Object that we have chosen has a flat side to make the demo easy.

What you will need

• Barnes Pinkysil
• Disposable plastic cup
• Mixing stick
• Container to pour the mould in
• Item to make the mould of

Barnes Pinkysil works fast! Make sure you have taken time to fully set up your mould box before measuring or mixing your silicone.

Measuring and Mixing

Measure equal amounts by volume or by weight of Part A and Part B of Barnes Pinkysil in two separate 300ml measuring cups. To calculate the correct amount of silicone, you can use a formula to find the volume of the mould box, or you can start off with a lesser amount, and mix a second batch if needed. Silicone sticks to silicone, so underestimating your volume is not an issue.

Pour the measured Part A and Part B into a measuring cup and stir quickly but thoroughly with a tongue depressor. Scrape the containers to ensure as much product is transferred to the mixing cup with minimal wastage. Transfer the mixed silicone into a second 600ml plastic cup for the final stage of mixing. This will ensure that the pink and white parts are completely crosslinking. You are looking for a homogenous soft pink colour, with no streaking. 

Barnes Pinkysil has a six- minute working time in ideal temperature conditions, so the mixing stage should be completed in no more than two minutes.

POURING

Pour the silicone in a steady stream in one spot into the mould. Hold your vessel with the Pinkysil at least 15-20cm above the object to create a thin stream that helps eliminate bubbles.  Fill until the object is covered ½ to 1cm above the top of the object. Don’t be overly concerned about surface bubbles on the back of your mould, these will not affect the outcome of your mould.

CURING

Wait half an hour in moderate conditions (temperature above 21 degrees C) before demoulding. Remove the plasticine and the mould pipe, then gently lift the mould up from the tile. The original bangle can then be removed from the tile.

The mould will be in a ‘green’ state for around 24 hrs, and it is advisable to wait until then to cast into your mould for the first time.