For those who do this, is there a special blade besides the 3 that come with the machine to cut fondant/gum paste? I couldn't find a deep blade or anything on the silhouette website.
You might try contacting Linda McClure. She sells the machine and blades for the silhouette. Just google her name.
I used an exacto knife and carefully trimmed the plastic down on one of the blades to give it a little more depth.... works just fine.