The use case for everyone that’s asked for this is slab flattening and table surfacing. Using intercon is a really easy and effective way to do this. You can control the exact stepover, feedrate, and depth for the cut. You can make an intercon file for this in under a minute, and you can even save off intercon files right in Centroid so you can recall them even faster.
It’s faster, easier and safer than the old manual way.
Doing this manually is not recommended as you have no real control over the feedrate.
I would highly recommend take Intercon for a spin. Despite it’s very simple interface it’s very fast and easy for this sort of stuff.
If you absolutely wanted to do this “the old way” you could write a two line text file and load it as a job:
M3 S12000 ;turn on spindle and set speed
M00 ;stop and allow operator to jog
I would not recommend doing this, but there is a way if you want to.