Got one of those beaks from me and want to cut it open? Here's how I do mine. Please note: I own two Dremels and had them preloaded with my different bits, so my bad about all the switching if you want to follow the steps in order! I didn't consider how everyone may not have as many as I do, oops :X

You'll need:
*DUST MASK -- super important, you can get really sick from breathing dust if you don't wear one
*Work gloves (I had to keep taking mine off to work the camera)
*Eye protection! Seriously, wear goggles designed for such tasks (your normal glasses don't count)
*A safe space to work (no kids/pets in the room, don't work over a carpet, etc)
*Dremel/rotary tool with assorted bits (I used a diamond bit http://blueroofdesigns.files.wordpr.....amond-bits.jpg , 2nd from left and a grinder)
*Broom to clean up after
*Fine-grit sandpaper or sanding block, in case you want to touch up any areas by hand afterwards.

Later we'll be lining them with fleece, touching up the lower beak with Apoxie Sculpt to make them look more pro! Then we'll stick it on a foam base.