Brian wrote:

A follow up question from my request for trig. help. For a person with a fully manual bridgeport and a rotary table, what's the method most likely to be successful and efficient to drill hole circles, up to say 6 holes.


Whole bunch of very useful little utilities here, including
"boltcirc.zip"
http://www.geocities.com/CapeCanaveral/Hall/4425/


Tom