%
(helix.txxt)
N1 T7 M06 ( 3/8" END MILL ) 
N2 G17 G00 G90  X0.8125 Y0.0 S2500 M03
N3 G43 Z1.0 H07
N4 Z0.1
N5 G01 Z0.0 F2.5
N6 G02 Y0.0 Z-0.5 I-0.8125 J0.0 F5.0
N7 G00 Z1.0
N8 G00 Z1.0 
N9 M05
N10 G28 Z0
N11 G28 Y0
N12 M30
%