Thanks for the replies, I was ready other threads, isomalt is heated and poured. There was a thread about making sugar beer bottles that was cool. She made a latex mold and had her own recipe for the sugar, maybe you can read that one, she gave a couple of links to places for the silicone.
Isomalt is a sorbitol based product that is used in place of true sugar because it withstands humidity better. It is pricey and sorbitol has the effects of a laxative which can lead to problems for those that consume it. Sugar works fine in a fairly dry climate. All you need is sugar, water, a heavy duty pan, and a candy therm. For a first timer this medium is often difficult to work with. It also can cause severe burns so I do not allow anyone else in my kitchen when working with it. You might consider colored piping gel. Safer, easier, and better tasting. 
I'm very new at this & have never used the sugar method, however, I needed to make a swimming pool cake & tried the colored piping gel. Very easy & looked great.
I thing its the same principle as making sugar glass, here is a tutorial I have
http://www.wikihow.com/Make-Sugar-Glass
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