I read and have try 29.5¡ã and straight both came out same.?
The 30¡ã in the old books was use for feed so it feed 0.001 on dial it took off 0.001 on the diameter.?
They use for tool post? grinding and set compound from 5¡ã to 11¡ã for finer feed.?
Dave?
davesmith1800