Hello
I just turned the script I provide on the following thread to a plugin (because VB script is not working on Linux)
http://www.cambam.co.uk/forum/index.php?topic=7674.0It allow to calculate what must be the feedrate to set for the toolpath in a mop (point A) to cut an internal circular shape, depending of the hole diameter and the tool diameter, so the wanted feedrate is applied to the surface to cut (point B).

for CamBam V1.0 only (tested on Linux Ubuntu)
++
David