"ed_h" wrote in message
oups.com...
snip---

You might be overthinking this. I work it with woodworking power
tools, and have never had a problem. A standard bi-metal holesaw will
cut your hole.


I agree. I made a soap dish many years ago from a piece that was 3/4"
thick. Machined it with HSS cutters and had no problems at all. I recall
it was quite nice to machine.

Harold