How to use RTV 2 molding silicone rubber make molds for resin artwork reproduction

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 b.Slowly and evenly perfuse the gypsum to the square frame. Also you can brush the resin on the product which is covered with the finished silicon rubber mould with a brush or a brush pen. Repeat this process two or three time after the cross link reaction.

 with the finished silicon rubber mould in the middle.

 a.Make a square frame with four pieces of wooden boards or rubber plates, then place the product which is covered

 Step Four: Operations for the external mold

 The perfusion molding is an easy way to make molds, Slowly and evenly perfuse the mixed silicon rubber into the square frame. After the cross linking reaction.

 Perfusion Molding

d. Cover a third coat.(Note: if you have high requirements for the tension and the tear strength for the mold,please repeat step c and step d.Hence, the finished silicone moulds will have a good quality and a longer life, which can help you save cost and increase production efficiency.)

c. Cover a glass cloth on it after another 30 minutes of a second cross linking reaction, and use a brush pen or a brush to avoid any interstices.

strength of the mold.

b. After the cross linking reaction ( about 30 minutes ),brush a second coat which can increase the tension and tear

a. Evenly brush the mixed silicon rubber on the product which is covered with mold spray with a brush or a brush pen.

Brushing cast:

 Step Three: Brushing cast & Perfusion Molding operation

Step Two: vacuum pumping  Without exception, this takes less than 10 minutes. Otherwise, it will cause cross linkiing  reaction, and no more further steps will be available.

Step One:Take 100g of part A and add 2g of part B and mix the silicon rubber and the curing agent evenly.

How to use RTV 2 molding silcone rubber make molds for plastic toys reproduction

(Notes: we should choose the silicon rubber specifically according to the requirements of our products to avoid this problem.)

b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs.

a. Adding too much silicone oil in to silicon rubber. Silicon oil is an additive which destroies the molecular weight of silicone rubber and reduce the tension and tear strength.

It can be due to the following reasons:

1. Why should the silicone mold be reused only for a few times?

FAQ of RTV 2 silicone mold making rubber

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RTV 2 molding silcone rubber
for resin artwork molds making
for soap& candle mould making
for concrete&stone casting