Thank you for sharing this info, very interesting!
Petros
Just to clarify.... The stead rest with the donut in it is placed right up to the face of the rotating piece. I put a little cue wax on the head of the drill before I start drilling. The head of the drill is larger than the shank so after the head is in the piece, there is nothing supporting the drill. It will maintain its bore by itself. I use about 40 to 60 psi air in the drill.
Kim