Vigil,
There exists a tungsten carbide bit for the Dremel that will do just
what you want and so much more that you don't want. I believe it is
the 9903
http://www.toolbarn.com/dremel-d-9903.html
Be VERY careful with it. Use hand and eye protection, ESPECIALLY hand.
Not that it will cut you; rather it will create such fine metal
shavings that they will simply sneak into your pores and you will go
insane for a week or two trying to get them all out with tweezers. I
always think about it two or three times before I use it because of
this factor. OTOH, its cutting ability is beyond belief and it lasts
very well.
David L
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