Quite an Unusual one

[EddyCurrent]

The hammer is now mounted on a gimbal and can be made to work in a circular motion by moving the X and Y axes.

No need for a rotating base so it can be made cheap and strong.
Mach3 can operate the X and Y axes.



OR easier

A small X Y gantry mounted on top moves the end of the hammer so 50mm there would be maybe 300mm at the other end of the hammer.
Then Mach3 could be used in the normal way where you would use a 2D software to draw a reduced size pan with the required toolpaths.
A pneumatic proportional valve working on 0-10v (like a VFD) could be used to control air pressure to the hammer using M codes e,g, M3 to turn on the air
then for example S500 would tell the valve to deliver 5Bar, S200 = 2Bar , etc.
So the S codes could be put in the G code as required to change the hammer power.