G-Code uses z-moves for chipping instead of G73

[megamechasloth]

Hello, I'm new to using Autodesk Fusion, and I'm using it to drill, tap, and mill a piece of extruded heatsink. The drilling operations all have 'Chip breaking - partial retract' as the Cycle Type. The Pecking Depth, Minimum Pecking Depth, and Chip Breaking Distance are all 0.05 in. Pecking Depth Reduction is 0 in and Accumulated pecking Depth is 0.525 in. While looking at the G-Code generated from this, I noticed that the first drilling operation uses z-moves to show the chipping instead of G73 like the others. I wanted to know why this one was different from the rest, and what can I do to ensure that they all use G73 in the future as it uses fewer lines. I've also tried this on a few different pieces, and I've gotten inconsistent results. Some use z-moves to drill the holes, and others use G73.

(T1 D=0.5 CR=0. TAPER=118DEG - ZMIN=-0.5252 - DRILL)

(T2 D=0.125 CR=0. TAPER=118DEG - ZMIN=-0.4126 - DRILL)

(T3 D=0.187 CR=0. TAPER=118DEG - ZMIN=-0.4312 - DRILL)

(T4 D=0.138 CR=0. - ZMIN=-0.375 - RIGHT HAND TAP)

(T6 D=1. CR=0. TAPER=90DEG - ZMIN=-0.248 - COUNTERSINK)

(T7 D=2. CR=0. - ZMIN=-0.015 - FACE MILL)

N10 G90 G94 G17

N15 G20

N20 G28 G91 Z0.

N25 G90

(.50 DIA HOLES)

N30 T1 M6

N35 S5000 M3

N40 G4 P36

N45 G90 G94 G17

N50 M8

N55 G0 E1 X2. Y0.0004

N60 G43 Z0.6 H1

N65 Z0.2

N70 Z0.08

N75 G1 Z-0.05 F40.

N80 G0 Z0.

N85 G1 Z-0.1 F40.

N90 G0 Z-0.05

N95 G1 Z-0.15 F40.

N100 G0 Z-0.1

N105 G1 Z-0.2 F40.

N110 G0 Z-0.15

N115 G1 Z-0.25 F40.

N120 G0 Z-0.2

N125 G1 Z-0.3 F40.

N130 G0 Z-0.25

N135 G1 Z-0.35 F40.

N140 G0 Z-0.3

N145 G1 Z-0.4 F40.

N150 G0 Z-0.35

N155 G1 Z-0.45 F40.

N160 G0 Z-0.4

N165 G1 Z-0.5 F40.

N170 G0 Z-0.45

N175 G1 Z-0.5252 F40.

N180 G0 Z0.2

N185 X4.75

N190 Z0.08

N195 G1 Z-0.05 F40.

N200 G0 Z0.

N205 G1 Z-0.1 F40.

N210 G0 Z-0.05

N215 G1 Z-0.15 F40.

N220 G0 Z-0.1

N225 G1 Z-0.2 F40.

N230 G0 Z-0.15

N235 G1 Z-0.25 F40.

N240 G0 Z-0.2

N245 G1 Z-0.3 F40.

N250 G0 Z-0.25

N255 G1 Z-0.35 F40.

N260 G0 Z-0.3

N265 G1 Z-0.4 F40.

N270 G0 Z-0.35

N275 G1 Z-0.45 F40.

N280 G0 Z-0.4

N285 G1 Z-0.5 F40.

N290 G0 Z-0.45

N295 G1 Z-0.5252 F40.

N300 G0 Z0.2

N305 X9.25

N310 Z0.08

N315 G1 Z-0.05 F40.

N320 G0 Z0.

N325 G1 Z-0.1 F40.

N330 G0 Z-0.05

N335 G1 Z-0.15 F40.

N340 G0 Z-0.1

N345 G1 Z-0.2 F40.

N350 G0 Z-0.15

N355 G1 Z-0.25 F40.

N360 G0 Z-0.2

N365 G1 Z-0.3 F40.

N370 G0 Z-0.25

N375 G1 Z-0.35 F40.

N380 G0 Z-0.3

N385 G1 Z-0.4 F40.

N390 G0 Z-0.35

N395 G1 Z-0.45 F40.

N400 G0 Z-0.4

N405 G1 Z-0.5 F40.

N410 G0 Z-0.45

N415 G1 Z-0.5252 F40.

N420 G0 Z0.2

N425 X12.

N430 Z0.08

N435 G1 Z-0.05 F40.

N440 G0 Z0.

N445 G1 Z-0.1 F40.

N450 G0 Z-0.05

N455 G1 Z-0.15 F40.

N460 G0 Z-0.1

N465 G1 Z-0.2 F40.

N470 G0 Z-0.15

N475 G1 Z-0.25 F40.

N480 G0 Z-0.2

N485 G1 Z-0.3 F40.

N490 G0 Z-0.25

N495 G1 Z-0.35 F40.

N500 G0 Z-0.3

N505 G1 Z-0.4 F40.

N510 G0 Z-0.35

N515 G1 Z-0.45 F40.

N520 G0 Z-0.4

N525 G1 Z-0.5 F40.

N530 G0 Z-0.45

N535 G1 Z-0.5252 F40.

N540 G0 Z0.2

N545 X16.5

N550 Z0.08

N555 G1 Z-0.05 F40.

N560 G0 Z0.

N565 G1 Z-0.1 F40.

N570 G0 Z-0.05

N575 G1 Z-0.15 F40.

N580 G0 Z-0.1

N585 G1 Z-0.2 F40.

N590 G0 Z-0.15

N595 G1 Z-0.25 F40.

N600 G0 Z-0.2

N605 G1 Z-0.3 F40.

N610 G0 Z-0.25

N615 G1 Z-0.35 F40.

N620 G0 Z-0.3

N625 G1 Z-0.4 F40.

N630 G0 Z-0.35

N635 G1 Z-0.45 F40.

N640 G0 Z-0.4

N645 G1 Z-0.5 F40.

N650 G0 Z-0.45

N655 G1 Z-0.5252 F40.

N660 G0 Z0.2

N665 X19.25

N670 Z0.08

N675 G1 Z-0.05 F40.

N680 G0 Z0.

N685 G1 Z-0.1 F40.

N690 G0 Z-0.05

N695 G1 Z-0.15 F40.

N700 G0 Z-0.1

N705 G1 Z-0.2 F40.

N710 G0 Z-0.15

N715 G1 Z-0.25 F40.

N720 G0 Z-0.2

N725 G1 Z-0.3 F40.

N730 G0 Z-0.25

N735 G1 Z-0.35 F40.

N740 G0 Z-0.3

N745 G1 Z-0.4 F40.

N750 G0 Z-0.35

N755 G1 Z-0.45 F40.

N760 G0 Z-0.4

N765 G1 Z-0.5 F40.

N770 G0 Z-0.45

N775 G1 Z-0.5252 F40.

N780 G0 Z0.2

N785 Z0.6

N790 M5

N795 G28 G91 Z0.

N800 G90

(.125 DIA HOLES  36)

N805 M9

N810 M1

N815 T2 M6

N820 S5000 M3

N825 G90 G94 G17

N830 M8

N835 G0 E1 X17.875 Y0.0004

N840 G43 Z0.6 H2

N845 Z0.2

N850 G98 G73 X17.875 Y0.0004 Z-0.4126 R0+0.185 Q0.05 P0.05 F40.

N855 X10.625

N860 G80

N865 G1 X5.875 Y0.4694 Z0.2 F100.

N870 G0

N875 G98 G73 X5.875 Y0.4694 Z-0.4126 R0+0.2 Q0.05 P0.05 F40.

N880 Y-0.4686

N885 G80

N890 G1 X3.375 Y0.0004 Z0.2 F100.

N895 G0

N900 G98 G73 X3.375 Y0.0004 Z-0.4126 R0+0.185 Q0.05 P0.05 F40.

N905 G80

N910 Z0.6

N915 M5

N920 G28 G91 Z0.

N925 G90

(.187 DIA HOLES)

N930 M9

N935 M1

N940 T3 M6

N945 S5000 M3

N950 G90 G94 G17

N955 M8

N960 G0 E1 X0.5 Y0.0004

N965 G43 Z0.6 H3

N970 Z0.2

N975 G98 G73 X0.5 Y0.0004 Z-0.4312 R0+0.2 Q0.05 P0.05 F40.

N980 X7.

N985 X14.25

N990 X20.75

N995 G80

N1000 Z0.6

N1005 M5

N1010 G28 G91 Z0.

N1015 G90

(36 TAP)

N1020 M9

N1025 M1

N1030 T4 M6

N1035 S500 M5

N1040 G90 G94 G17

N1045 M8

N1050 G84.2

N1055 G0 E1 X5.875 Y0.4694

N1060 G43 Z0.9 H4

N1065 Z0.5

N1070 G98 G84.1 X5.875 Y0.4694 Z-0.375 R0+0.2 S500 F15.625

N1075 Y-0.4686

N1080 G80

N1085 Z0.9

N1090 M5

N1095 G28 G91 Z0.

N1100 G90

(CSINK)

N1105 M9

N1110 M1

N1115 T6 M6

N1120 S5000 M3

N1125 G90 G94 G17

N1130 M8

N1135 G0 E1 X0.5 Y0.0004

N1140 G43 Z0.6 H6

N1145 Z0.2

N1150 G98 G81 X0.5 Y0.0004 Z-0.123 R0+0.2 F13.33

N1155 G80

N1160 G1 X2. Z0.2 F100.

N1165 G0

N1170 G98 G81 X2. Y0.0004 Z-0.248 R0+0.2 F13.33

N1175 X4.75

N1180 G80

N1185 G1 X7. Z0.2 F100.

N1190 G0

N1195 G98 G81 X7. Y0.0004 Z-0.123 R0+0.2 F13.33

N1200 G80

N1205 G1 X9.25 Z0.2 F100.

N1210 G0

N1215 G98 G81 X9.25 Y0.0004 Z-0.248 R0+0.2 F13.33

N1220 X12.

N1225 G80

N1230 G1 X14.25 Z0.2 F100.

N1235 G0

N1240 G98 G81 X14.25 Y0.0004 Z-0.123 R0+0.2 F13.33

N1245 G80

N1250 G1 X16.5 Z0.2 F100.

N1255 G0

N1260 G98 G81 X16.5 Y0.0004 Z-0.248 R0+0.2 F13.33

N1265 X19.25

N1270 G80

N1275 G1 X20.75 Z0.2 F100.

N1280 G0

N1285 G98 G81 X20.75 Y0.0004 Z-0.123 R0+0.2 F13.33

N1290 G80

N1295 Z0.6

N1300 M5

N1305 G28 G91 Z0.

N1310 G90

(MILLING)

N1315 M9

N1320 M1

N1325 T7 M6

N1330 S2000 M3

N1335 G90 G94 G17

N1340 M8

N1345 G0 E1 X3.375 Y2.1625

N1350 G43 Z0.6 H7

N1355 Z0.2

N1360 G1 Z-0.015 F13.33

N1365 Y2.0629 F40.

N1370 Y-2.0629

N1375 G19 G2 Y-2.2629 Z0.185 K0.2

N1380 G0 Z0.2

N1385 G1 X10.625 Y-2.1625 F100.

N1390 Z-0.015 F13.33

N1395 Y-2.0629 F40.

N1400 Y2.0629

N1405 G3 Y2.2629 Z0.185 K0.2

N1410 G0 Z0.2

N1415 G1 X17.875 Y2.1625 F100.

N1420 Z-0.015 F13.33

N1425 Y2.0629 F40.

N1430 Y-2.0629

N1435 G2 Y-2.2629 Z0.185 K0.2

N1440 G0 Z0.6

N1445 G17

N1450 M9

N1455 G28 G91 Z0.

N1460 G90

N1465 G0

N1470 G53 X0. Y0.

N1475 M30

%