A turning insert cuts with a radius, not a point, and tapers and arcs show the difference. How TNR comp works, the orientation number, and the lead-in rules.
On a waterjet, G41/G42 kerf compensation carries the dimensional accuracy. How to pick the kerf value, program lead-ins that survive comp, and handle taper.
G41 offsets the cutter to the left of the path and G42 to the right. Here is how cutter compensation works, the D register, and how to engage it without a crash.