Silicone Moldmaking: Seamless Block Mold

In this tutorial we explain the process of making a seamless block mold for resin casting using 71-10 silicone. Of interest to new mold makers, will be the thought process of choosing a silicone for this type of mold and why we went with 71-10.
You can find 71-10 silicone here: http://www.brickintheyard.com/collections/tinsil-platsil-silicones
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