Shear Angle Position — Non-Round Bottom Maker Cutting Punch   INST 225.1

Service Bulletin: INST 225.1

Subject: Shear Angle Position — Non-Round Bottom Maker Cutting Punch

Recommendations: 

Shear Angle Position

The shear angle position on non-round bottom maker punch has been changed. The old position was at the 9 and 3 o’clock position. The new shear angle position on non-round punches is now at 10 and 4 o’clock. Existing punches with the old position should not be modified to the new position as this will result in excessive grinding of valuable punch length.

DO NOT MODIFY OLD PUNCHES!