Newbie with Taig mini lathe.

I would like to make a small flat bottomed hole in the end of a piece of brass.

I would like the walls of the hole to be at 90 degrees to the bottom and the smoothest finish possible.

The hole is small 0.1" diameter and 0.05" deep!

What kind of tool should I use for this? A parting tool or a boring bar ...both or something else?

HSS or carbide? Any suggestions much appreciated!

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