Choose a mold shape or object to copy
Clean and dry the original object
Build a mold box around the object
Seal any gaps in the mold box
Apply mold release to the object and box
Mix silicone mold material according to instructions
Pour silicone slowly into the mold box
Tap the box to release air bubbles
Let the silicone cure fully
Remove the mold box
Take out the original object
Trim any excess silicone
Test the mold with a small resin pour
Clean and store the mold properly