Glenn Ashmore wrote:
Have you considered a Watts Brothers Tool Works floating chuck drill? Truly
amazing tool for boring square, hexagonal and octagonal holes. 'Tain't
cheap but fun to watch.





Watts Brothers Tool Works 760 Airbrake Ave Wilmerding, PA, 412-823-7877

Theory
http://upper.us.edu/faculty/smith/reuleaux.htm



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Rex Burkheimer
WM Automotive
Fort Worth TX