Davids-Portable-Dc-6 Starting from the beginning though, as even the designers of the real Dreamcast would have done, David sketched possible ideas of what he wanted the console to look like, which was followed by a clay mold, then a plaster cast of it. The next step involved taking a 14″ x 18″ sheet of plastic, and heating it up. Once that’s softened up, it sits on top of the plaster cast while a home made vacuum chamber (instructions on how to build one can be found here) sucks all the air out from around it, making it fall into the shape of the cast… Link.