In this class we will make a corkscrew suited to opening even the finest of wines.

Unlike most modern, mass-produced, skinny little corkscrews, this design grabs a whole bunch of cork, not just the bit down the middle.
With one of these you will never find that, instead of removing it, you have just drilled a ragged hole in that piece of bark that's keeping you from your wine.

"You're going to have to change this design... It makes wine toooo accessible." - A.Z. (student who made a nice one. Then tested it.)

These make nice gifts (especially when you demonstrate that it really does work, on that bottle of nice wine you brought along).

Carl's note:
I'd had the idea of a corkscrew festering in my head for a long time, thinking that there must be a slick way of doing it. At the '10 NEB Fall Meet, Russell Pope had one on display. So I asked him about it and before he was twenty words into the explanation, the technique was clear. They don't quite make themselves, but it sort of feels that way.