[Coco] make-do ROM Paks

[Robert Gault]

Roger Taylor wrote:
><snip>
> What exactly is a vacuum forming box and is that the method of making 
> it, or what it does after you seal it shut?
 ><snip>

Picture a negative relief mold of something, a face for example. You 
drill very small holes all over the mold so that the surface becomes a 
screen. You place a piece of plastic with thermal properties such that 
is becomes flexible at temperatures significantly below the melt point 
on the inside of the mold. Heat is applied to the plastic and a partial 
vacuum is applied to the opposite side of the form. Within seconds you 
can reshape the flat sheet into the shape of the face.

With the correct mold and plastic, the plastics industry can vacuum form 
just about any shape.