Here’s an easy way to precisely align or clock a boring tool in a boring head. You’ll need a dowel pin the same size as the tool shank to fit the boring head, a 1/4″ thick x 1/2″ aluminum flat bar, and a 1-1/2″ x 1/2″ aluminum flat bar, though the size is not critical. Install the tool and dowel pin as shown. Hold the 1-1/2″ wide flat bar against the tool shank and dowel pin (red arrow pic 3). Place the 1/4″ thick flat bar against the 1-1/2″ wide flat bar (green arrows). Align the tool’s cutting face so it lies against the 1/4″ thick flat bar (blue arrow). Tighten the tool set screw. Remove the dowel pin. It’s OK if the wide bar must be leaned out to accommodate the 1/4″ thick bar between the tool face and the wide bar, as long as the lower edge of the wide bar is held against the dowel and tool shank.
Tom Nichols
Automotive Machine & Supply, Inc
Cleburne, TX
