Disclaimer: I'm not a real teacher, I just impersonate one on the internet.

Our friend Charper had requested info about my avatar and how I had made it.
Unfortunately I had to admit the the image was borrowed from another webpage... however since then I managed to trace the image and mess with the outline in Rhino to produce a reasonable facsimily(sp) in 3D.

So without further ado, here is the model. I was able to produce reasonable toolpaths for machining it using VisualMill so I expect you should have little trouble using your favorite CAM of choice.

Excellent, considering my classroom is Rhino Friendly and my boys just love skulls. I will try to have my techies run the toolpath from Mastercam, thanks for a fun project.