silicone for mold making by pouring way

Silicone for mold making by pouring way


Step 1 Handle the original mold

Choose a prefect original mold, Manually polish and smooth the model, clean the surface and dry it. Fixed the original mold in a smooth wooden board, and using 4 pieces wooden board around it to make a square frame

Brushing the release agent evenly on the surface of original mold and wooden board.

4 kinds release agent we often used in condensation silicone mold: Vaseline, soap water, detergent, liquid paraffin.(silicone oil also can be used as release agent)


Step 2 Weight part A & part B according to the mix ratio recommended

Weighting two parts in Electronic scale with mix ratio 100:2~3 

Eg: Take 100g part A and 2~3g part B


Step 3 Stirring evenly

Remember to mix part A and part B evenly, otherwise the silicon rubber will be partly solidified and bring  problems in your final operation. Whats more, the finished molds will meet a short life. All of these will cause a waste of silicon rubber.


Step 4  Vacuum pumping

For releasing the air bubbles, after mixing evenly, put the mixture in to vacuum pumping for 3-5 minutes, without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available.


Step 5  Pouring

Pouring the silicone rubber to the frame from a corner, make the silicone rubber flow to the frame smooth.


Step 6 demoulding

After 4-6 hours later, can demould the silicone mold, It’s will be better for mold to demould after 24 hours


Contact Us

Contact: SEMOST

Phone: 008613527947568

Tel: +86-0769-22216983


Add: 18th Building, Songke Court, Songshan Lake S&T Park, Dongguan, Guangdong, China