There has been some discussion about using electronic cutters for cake decorating. I invented this method using the cricut expression but I now use the Silhouette. This is the machine we sell with the modified blade, mainly because the Silhouettes print and cut feature is very good and the machine is not that expensive.
If your machine uses a mat and has a blade it can be used to cut out decorations for a cake. I have a blog at www.creativedesignsforcakes.blogspot.com that has several hints and tips for using your cutter.
I have been working with icing sheets and have had great success with them. In fact, when I demonstrate the Silhouette at cake shows I only use icing sheets. I am sharing this because the people in this forum understand paper and paper crafting. You would cut icing sheets just like you would paper. You can have a lot of fun decorating your home made or store bought treats. You can order your icing sheets from www.icingimages.com and they are working on colored sheets. They have chocolate icing sheets that tastes just like chocolate! This is not supposed to be an advertisement for the company that sells the icing sheets, I just wanted to share this with the folks who already understand the unlimited uses of their great cutting machines.
If you would like to see a few videos go to you tube and put my name Linda McClure in the search box.