On Sun, 28 Jul 2019 14:02:52 -0700, Bob La Londe
wrote:

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.
boring bar with square (cut-off) blade