The first circle is ~1.5" diameter and starts at Z0 and progresses around to 0.070" depth. The cutter continues its decent around the second pass, now at constant depth of cut of 0.070" and continues round and round until the final pass, cutting all the way through at 0.390". Then there is another cut again at the surface with a 0.125" larger radius, two passes to achieve a depth of only 0.120".

Code: Select all

```
%
(cutter: 4 flute, 1/4")
(RPM: 1500)
G90
G00
Z1
X0 Y0
G00 X0.000 Y0.625 Z0.020
G1 F7
Z0
(CCW circle)
G03 X0.000 Y0.623 Z-0.070 I0.0 J-0.623
G03 X0.000 Y0.623 Z-0.140 I0.0 J-0.623
G03 X0.000 Y0.623 Z-0.210 I0.0 J-0.623
G03 X0.000 Y0.623 Z-0.280 I0.0 J-0.623
G03 X0.000 Y0.623 Z-0.350 I0.0 J-0.623
G03 X0.000 Y0.623 Z-0.380 I0.0 J-0.623
G01 X0.000 Y0.625
G03 X0.000 Y0.625 Z-0.390 I0.0 J-0.625
G00 Z0.010
G01 X0.000 Y0.750
G01 Z0.000
G03 X0.000 Y0.748 Z-0.070 I0.0 J-0.748
G03 X0.000 Y0.748 Z-0.120 I0.0 J-0.748
G01 X0.000 Y0.750
G03 X0.000 Y0.750 Z-0.120 I0.0 J-0.750
G00 Z1
X0 Y0
M30
%
```

Thanks!