Jimmi here, hope everyone’s A-OK! Today I’m going to show you how to make a simple two part mold. You’d use this to cast complete 3D objects, such as a gun. This obviously makes this far more useful than the single part mold technique, which limits you to just casting one side of an object.
That said, make sure that you’re up to speed with casting a single part mold before you begin, my tutorial last week takes you over the details so I strongly recommend that you start there and go over the basics (such as the materials, and making a Lego box etc) before you read on. Go on, I can wait whilst you read that first and then come back!