Pick up a set of el-cheapo diamond bits from HF, they work pretty
good for
that application.

Thanks. I have a confession to make, though. I used the term Dremel
Tool, but it's really a Craftsman. I wonder what Dave meant when he
talks about "the angled fixture" working well. Is this something
exclusive to real Dremel Tools, because my Craftsman is straight light
a portable cordless screwdriver.