How can industrial grade liquid silicone be softened if it is too hard

What should I do when purchasing raw materials from a liquid silicone supplier during production,gypsum cement for molds if I find that the hardness and current usage are not suitable, but the production is urgent and there is no time to exchange them.

If the liquid silicone you buy is too soft or too hard, don't panic. Here are some tips from HANAST Silicone to easily solve the problem.liquid rubber mold making
If the liquid silicone is too hard, silicone oil can be used to soften it. The proportion of silicone oil added is about 5 grams per kilogram, which can be softened 1-2 hardness. However, the amount of silicone oil added should not be too much, usually not exceeding 10%. Otherwise, the toughness and tear strength of the silicone will decrease.
2. You can also use 0 hardness soft silicone, mixed with high hardness liquid silicone, to neutralize to a perfect and suitable hardness. For example, 1 kilogram of 0 hardness silicone and 1 kilogram of 20 hardness silicone can be neutralized to 10 hardness silicone. This method is effective and will not have any impact on the performance of the silicone.