Block molds are one of the less complicated methods used to make molds, but there are important steps to take to ensure you get the best mold and casting from your original model. This is a great molding option for relatively small parts with one flat surface and few undercuts.
This written tutorial will take you through the steps to make a silicone block mold of a small, decorative object, providing plenty of helpful tips.
Step 1: Select Containment Area
Step 2: Secure Model to Base
Step 3: Seal the Mold Box
Step 4: If Necessary, Apply Sealer and/or Release Agent
Step 5: Determine How Much Liquid Rubber Is Needed
Step 6: Weigh & Mix Rubber
Step 7: Pour Rubber
Step 8: Allow Rubber to Cure
Step 9: Demold
Tutorial: https://www.polytek.com/tutorial/how-make-one-piece-rubber-block-mold
