"Bob La Londe" wrote in message ...

I can just grab a piece of tool steel and go stand in front of the
grinder for a while, but I was wondering if there is a simple elegant,
not over priced tool to do the job. Ring groove will likely be 1.1"
give or take.

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Seems the old school round boring bar with square broach and set screw might
be the best tool for this job. Atleast I can pregrind two or three HSS bits
the same for this if I wind up doing a bunch of them.

Now about face trepanning a recess that butts up against a shank diameter.
For now I have been using a hand ground brazed carbide inside threading
tool. It no longer looks like a theading tool and has relief on one side
for the smallest diameter of the recessed area.