Here is my GCode:

N0010 (Filename: Work1.tap)

N0020 (Post processor: MP1000-THC.scpost)

N0030 (Date: 01/01/2002)

N0040 G21 (Units: Metric)

N0050 G53 G90 G40

N0060 F1

N0070 (Part: Work1)

N0080 (Operation: Inside Offset, Layer 1, T3: Steel 3 mm)

N0090 M06 T3 F1500 (Steel 3 mm)

N0100 G00 Z10.0000

N0110 X22.6966 Y46.4400

N0120 Z3.0000

N0130 G28.1 Z3.00

N0140 G92 Z0.0

N0150 G00 Z0.0520

N0160 G92 Z0.0

N0170 G00 Z3.0000

N0180 M03

N0190 G04 P0.1

N0200 G01 Z1.5000 F100.0

N0210 G02 X25.2566 Y49.0000 I2.5600 J0.0000 F1500.0

N0220 G01 X49.0000

N0230 Y1.0000

N0240 X1.0000

N0250 Y49.0000

N0260 X25.2566

N0270 G02 X27.8166 Y46.4400 I0.0000 J-2.5600

N0280 M05

N0290 G00 Z10.0000

N0300 X0.0000 Y0.0000

N0310 M05 M30