%
(Stock size(X,Y,Z: 100mm x 500mm x 5mm)
M6 T10
(G00 X7 Y12 F70)
G00 X0 Y0 F70 Z1.75 (get above work straight line)
G20 (inches G20 vs mm G21)
G91 X.00 Y0 Z1.75 (incremental relative ot current position)
G90 (absolute relative to corner or center)

G91 X7.00 Y12 Z0(move to starting point)
(M6 T10 (tool selection 1-10)
(G92 X0.00 Y10.00 Z-.75) (clockwise cut)
G91 X0.00 Y0.00 Z-1.25(starting point)
G91(incremental coordinates to next position important)
G3 X0 Y0 I5 J0  Z0(counter clockwise cut y=diameter)
M30  (end of file) 
%