Conversational Programming Spiral

see www.rcgroups.c...
CNC Spiral from small Arcs
GCODE Below
G90 ; ABS
G0 X40.0 Y40.0 ; P1 Fast
G1 Z0 F800
G91 ; REL
G1 Z-1.8 ; DOWN
G2 X0.8 Y1.4 R1.7
G2 X2.1 Y0.2 R3.3
G2 X2.1 Y-1.7 R5.0
G2 X0.8 Y-3.3 R6.7
G2 X-1.6 Y-3.9 R8.3
G2 X-4.2 Y-2.8 R10.0
G2 X-5.8 Y-0.1 R11.7
G2 X-5.7 Y3.4 R13.3
G2 X-3.5 Y6.7 R15.0
G2 X0.6 Y8.3 R16.7
G2 X5.3 Y7.5 R18.3
G2 X9.2 Y4.1 R20.0
G2 X10.8 Y-1.2 R21.7
G2 X9.4 Y-7.1 R23.3
G2 X4.8 Y-11.7 R25.0
G2 X-1.9 Y-13.3 R26.7
G2 X-8.9 Y-11.2 R28.3
G2 X-14.2 Y-5.5 R30.0
G2 X-15.8 Y2.6 R31.7
G2 X-13.0 Y10.8 R33.3
G2 X-6.1 Y16.7 R35.0
G2 X3.2 Y18.3 R36.7
G2 X12.6 Y14.9 R38.3
G2 X19.2 Y6.8 R40.0
G1 Z1.8
G0 Z5 ; UP
G91 ; REL