Get a little use out of those empty tin cans you are going to throw away. Recycle them into a cutting disc. So, check out this video tutorial to see how to make a cutting disc for a Dremel rotary tool. These Dremel cutting disks are pretty easy to make. Just get a can opener, take off the lid of one of your junk aluminum cans, and begin to disc away. You'll need a Dremel sanding disc for a stencil reference. These are less dangerous than normal sharp cutting disks, not to mention cheap.