After sitting overnight, gently pry the 2 halves apart and twist the mold to release the artifact. Remove overflow from the channels. When the mold becomes very old, it is useful to spray in some mold release to keep the silicone from becoming too dry and sticking to the artifact. Professionals use the mold only about 10 times before replacing. You can expect about 40-60 reproductions before replacing when used for small museums.
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