Got around to making a quick and dirty video showing CSS, or Constant Surface Speed on the Patriot

Shopmaster Patriot CSS - YouTube

I'll get one of actual chips under CSS up soon.

Here is the code running in the video.

G18 G40 G49 G90 G94 G80
G48 S1000
G96 S100
M3
G0 X1.7625 Z0.1
F5
G0 Z-0.005
G1 X0.01F5
G0 Z0.1
G0 X1.7625
G0 Z-0.01
F3
G1 X0
G0 Z0.1
G97S100
M5
M30

Basicly, the normal wizard code for OD facing then, before the M3 to turn the spindle on you insert the G48 with the S command to limit the maximum spindle speed, the insert the G96 and S command to turn on surface speed control and give the desire surface feet per minute. Then before the M5 command to turn off the spindle you do good housekeeping and cancel CSS with the G97 with the S command to set the new spindle speed back down to a reasonable amount.