boring bar

[kd4gij]

Well today I made a holder for the new boring bar to go on my Aloris AXA tool post. Sel locking.

 

[fredybender]

Well today I made a holder for the new boring bar to go on my Aloris AXA tool post. Sel locking.
View attachment 62731View attachment 62732

Nice.
The problem with a boring bar with a 15 lead angle, like that one, is the fact that the force vectors act against you: the boring bar's weakes point, is in its axis; take a 0 degree lead (triangular insert, and all the forces are directed in compression in the bar, and through the workpiece into the chuck... All that being said, you can reduce that a bit by reducing the radii of your insert;
try finding a SCMT 431 if you can
HTH
Fred