Noob looking for little advice...

[MRob]

OK, I understand, ratio of forces from the diameter of the cutting head to the diameter of the workpiece - good to know. I'll check out the resources.

Think I gave my specifications wrong to begin with too - I see that people are classifying the slow rpm rotary as another axis to the high speed. So, I need continuous on the 4th axis and I would very much like to be able to change the angle of my tool, but that doesnt need to be continuous. And perhaps I could add this in later. 5 axis then.

... just to get a "finger in the air" idea though, how big a project do you think this is? Can I do it on a budget of under £2k??