; Author: jthornton

(info: outside diameter - lathe turning)
o<od> sub
#<Material_Dia> =  #1 (=0.260 Material Diameter)
   #<Final_Dia> =  #2 (=0.180 Final Diameter)
   #<Depth_Cut> =  #3 (=0.010 Depth of Cut)
   #<Final_Cut> =  #4 (=0.000 Final Cut)
#<SurfaceSpeed> =  #5 (=100 Surface Speed)
    #<FeedRate> =  #6 (=2 Feed Rate)
     #<Max_RPM> =  #7 (=1500 Max Spindle RPM)
  #<Z_EndOfCut> =  #8 (=-0.5 End of Cut)
#<Z_StartOfCut> =  #9 (=0.100 Start of Cut)
 #<RToolNumber> = #10 (=6 Roughing Tool)
 #<FToolNumber> = #11 (=6 Finishing Tool)
     #<Coolant> = #12 (=8 Flood=8, Off=9)

T#<RToolNumber> M6
; G43: toolength offset
; G7:  diameter mode
; G96: constant surface speed
G43 G7 G96 D#<Max_RPM> S#<SurfaceSpeed>

; Turn the OD
M3 M#<Coolant> ; spindle cw, coolant on/off
G0 X#<Material_Dia> Z#<Z_StartOfCut>
#<Current_Dia>=#<Material_Dia>

o100 while [#<Current_Dia> gt #<Final_Dia>]

O101   if [#<Current_Dia>-#<Depth_Cut> gt #<Final_Dia>]
         #<Current_Dia>=[#<Current_Dia>-#<Depth_Cut>]
O101   else
         #<Current_Dia>=#<Final_Dia>
O101   endif

       X#<Current_Dia>
       G1 Z#<Z_EndOfCut> F#<FeedRate>
       G0 X[#<Current_Dia>+0.025]
       Z#<Z_StartOfCut>
o100 endwhile

G0 X[#<Current_Dia>+0.025]
M5 M9               ; stop spindle, all coolant off
Z#<Z_StartOfCut>
G49                 ; cancel tool length offset compensation
G53 G0 X0 Z0        ; move in machine coordinates
o<od> endsub