Molding silicone rubber  is a wondrous material to make molds for many kinds of objects of small or big size, because it has many advantages of odorless, non-toxic, high resistance to tearing, resistance to extreme temperature, high simulation precision, clear texture and lines, long service, and so on.

 

How to make a mold with molding silicone rubber ? Below we will introduce it to you .Here we take a photo frame mold for example:

 

Step 1: To prepare and dispose of original model.

If the model is smooth and flawless enough, then we can definitely make a perfect mold for it. But if the original model has many weakness, then it is hard to make a good mold, now matter how good the silicone quality is.

 

Step 2: Fasten the photo frame model.

The joint of the frame must be sealed to prevent silicone from leaking. Then, fix the model in the frame.

 

Step 3: Metering, mixing and vacuum deaeration.

For condensation type silicone rubber, the mixing ratio of the two parts of the silicone material is generally 100:2, which should be measured with an electronic scale. Then deaerate the mixture after stirring.

 

Step 4 : casting the mixture

Pour 1/3 mold making silicone  into the frame slowly to ensure that silicone is seeped into every corner. After that, pour the rest of the silicone into it.

 

Step 5: demould.

Take out the model when the mold making silicone is completely cured. At last, it is necessary to clean and trim the finished mold.

 

 

2017-10-24