[Scott_bob]

I have some experience...
28 years, ugh!
25 years CNC...

Mostly, Fanuc, Fadal, Allen Bradley, Bandit, Tree, Yasnak, oh a bunch more I guess...

But enough about me.
HSM is a revolution in our industry. It is being promoted not so much by machine tool builders at large, but by other high tech players.
End Mills or Cutting Tools have evolved to a state that currently they can go much faster than most CNC machines can go smoothly.
Let me stop here with this. What is meant by smooth motion control?
Automatic Feed reduction?
Fadals ansewer to this is to slow the feed at the end of every block of code. But this is only good when a sharp change in direction is next. Slowing the feed rate when there is not a sharp change in direction is just a waste of time. And in 3D machining, Hugh amounts of time...
In 3D, usually the code is point to point or linear, (but not always) and Fadal has done some work here to improve performance, but that should be another point.

I like the point that one guy on this site says:
1st you get it right, then you go faster...