Or maybe an old one. At any rate, it cuts clean little holes in balsa wood, which is no mean trick (try it with a twist drill sometime). I did experience some break-through on the back side, but then I wasn't using the mandatory sacrificial backing board (what was I thinking!).
All you need to do is cut a sharp "V" groove in the end of an appropriate- sized bit of wire (I used an old bicycle spoke that happened to be just right to clear a #2 screw).
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Obviously it isn't going to be self-clearing like a Forstner bit or a twist drill, but it's OK in thin material, you can make it with a Dremel tool and a rectangular sharpening stone, and the price is right!