Step 4: Cutting the Mold
Using a scalpel, X-Acto knife, or something similar, carefully cut the mold in half. For the first few cuts on the outside of the mold, move your hand in a squiggly motion so you end up with a wavy edge, which "keys" the mold together when reassembled, and helps with realignment. Now all you have to do is pull your part out and you're done! You've now got a completed mold you can use to your heart's content.