On Sun, 11 Oct 2015 23:30:41 -0400, "Jim Wilkins"
wrote:

"John Doe" wrote in message
...
I need to slice a piece off of a 1 1/4 inch socket. Also need to cut
a slot
into that socket.

Sure would be nice to have a rotary tool add-on...

1. That holds the rotary tool stationary.

2. Slowly and steadily moves or spins the work into the rotary tool
cut off
wheel (or other attachment).

You should learn about standard machine tools and what they can do.
Either a lathe or a surface grinder could handle that. The cheaper way
would be a small chop saw, or anneal it, saw it and reharden. If you
weren't as irascible and hostile as Bonkers I might be more helpful.

It would likely be cheaper to buy the socket made for the job - sounds
like you are trying to make a sensor socket???