"John Doe" wrote in message
...
I never said "don't take it literally". When someone says something
that
cannot be taken literally, then normal people assume it means
something
less than the literal meaning.

Every square is going to have round corners. According to my
research,
some sophisticated tools for cutting square holes leave rounded
corners.
In my case, they can be significantly rounded, but I'm probably not
going to spend that much for this project.


A file with the edge ground smooth cuts corners square enough that you
need a microscope to show otherwise.

This is what a master craftsman (not me) can do with a file:
http://pistolsmith.com/workshop/1084...-dovetail.html

--jsw