Tutorial: Stamping Soap with a Custom Soap Stamp from ...
May 18, 2013·If I want to stamp a soap that does not have a water discount or has more soft oils, I wait 8 to 12 hours before stamping. For castile, I wait a couple of days after unmolding. After centering the stamp on the soap, I apply even pressure on both sides (left and right) of the stamp, and give the stamp a good clean smack with a rubber mallet.