Updated file, thank you so much to Ponoko helpers!
Now - Its thinnest parts measure 1mm, so it should be ok to cut on a range of materials. It is laid out on a P2 template.
This was made for a costume - you can see all the photos here: http://www.flickr.com/photos/geekphysical/sets/72157629162864775/
We designed the gears with our own homemade gear generator software.
The file includes the final butterfly as well as all the gear parts so you can move it around if you like. We use Corel Draw and then export to our laser cutting program.
Happy SteamPunk Butterfly designing :)