(Program to make Howell Lifter Bushings - Sheet25) (Climb Milling) (#14 Drill to suit 3/16 reamer) (Mill with 1/8 4 flute center cutting mill) (#14 Pre-drill for Reamer) M5 M9 G0 Z0.1000 G43 H1 G0 X0.2170 Y0.1750 M6 T1 (CENTER WORKPIECE AND LOAD #14 DRILL) M1 G0 X0.2170 Y0.1750 M3 G0 Z0.0100 G83 X0.2170 Y0.1750 Z-0.4000 Q0.15 R0.00 F10 G80 G0 Z0.1000 (Ream the hole 3/16) M5 M9 M6 T1 (LOAD 3/16 REAMER) M1 G0 X0.2170 Y0.1750 M3 G0 Z0.0100 G81 X0.2170 Y0.1750 Z-0.4000 F10 G80 G0 Z0.1000 (Mill outline) M5 M9 M6 T1 (Load 1/8" 4-flute center cut endmill) M1 G0 X0.1085 Y0.4125 G0 Z0 M98 P0001 L19 G0 Z0.1000 (Mill the round tube portion) M5 M9 M6 T1 (1/8 4-flute center cut endmill) M1 G0 X0.4356 Y0.1750 G0 Z0 M98 P0002 L12 (depth only at end of spiral 0.24") G91 G1 Z-0.0100 F0.50 (make another round at 0.25) G90 G2 I-0.2185 J0.0000 F10 G90 G0 Z0.100 G0 X0 Y0 M30 (Subroutine to mill tubular section) O002 G91 G2 I-0.2185 Z-.0200 J0.0000 F10 G90 M99 (Subroutine to mill outline) O001 G91 M1 G1 Z-0.0200 F1 G90 M1 G1 X0.2170 F1 G2 Y-0.0625 I0.0000 J-0.2375 M1 G1 X-.06250 G1 Y0.4125 G1 X0.1085 M99