Here are some competing products which can be used with Make the Cut software though I have not tried these products specifically, they look like they do about the same thing
Klic-N-Kut computerized craft cutter
Pazzles Inspiration amazon
BossKut Gazelle amazon
Step 1: Materials
a craft cutter which works with Make the Cut and can accept accept arbitrary vector art. I'm using a Cricut with updated firmware (before the lawsuit happened). See this instructable for how that worked.
some sheets of type 6 plastic, aka shrink plastic or "Shrinky Dinks"
"make the cut" software, or similar
a crisp image of the gear you would like to replicate
an oven. (I use a toaster oven dedicated to baking plastics like shrinky dinks and sculpey).
Step 2: Locate gear images
Try to find the cleanest image of the gear you want that you can. I had to touch mine up in Photoshop to get them cleaner. The more crisp the image, the easier it will be for the cricut. Also, it's better if you find gears that are already in pairs, that way you know the teeth will line up.
I'm sure a lot of these gears have proper names, though I'm not sure what they are. If you know of any other cool gear designs, please let me know.
Note, some gears just wouldn't bake straight, like the pinion example below (with the red x). It seems to be better if the design isn't too thin