Try this
(2D CONTOUR1)
M5
T1 M6
S1146 M3
G54
M8
G0 X-2.4 Y-0.05
G43 Z0.6 H1
Z0.2
G1 Z0.0394 F3.5
Z-0.7
G18 G2 X-2.35 Z-0.75 I0.05 K0. F10.4
G1 X-2.3
G17 G3 X-2.25 Y0. I0. J0.05
G1 Y0.3
G2 X-2.1768 Y0.4768 I0.25 J0.
G1 X-1.9768 Y0.6768
G2 X-1.8 Y0.75 I0.1768 J-0.1768
G1 X1.8
G2 X1.9768 Y0.6768 I0. J-0.25
G1 X2.1768 Y0.4768
G2 X2.25 Y0.3 I-0.1768 J-0.1768
G1 Y-0.3
G2 X2.1768 Y-0.4768 I-0.25 J0.
G1 X1.9768 Y-0.6768
G2 X1.8 Y-0.75 I-0.1768 J0.1768
G1 X-1.8
G2 X-1.9768 Y-0.6768 I0. J0.25
G1 X-2.1768 Y-0.4768
G2 X-2.25 Y-0.3 I0.1768 J0.1768
G1 Y0.
G3 X-2.3 Y0.05 I-0.05 J0.
G1 X-2.35
G18 G3 X-2.4 Z-0.7 I0. K0.05
G0 Z0.6
G17
M9
G53 G0 Z0.
G53 G0 X0. Y0.
M30