Quote Originally Posted by El$syd View Post
So... elucidate!

I have seen a lot of 'definitions' on the web - what is your definition?
Not my definition but industry definition

http://en.wikipedia.org/wiki/2.5D_%28machining%29

Quote Originally Posted by El$syd View Post
With Easymill as far as I am aware the axis is rotated but doesn't cut while rotating.
When the part has been rotationally positioned, the cutting starts in 2.5D.

Isn't 5 axis work holding and machine stability beyond hobbyists' budgets? So why is 5 axis an issue for hobbyist software?

I need many clamps just to hold the small pieces I do in x,y,z - so with 5 axes I am not sure how the work pieces would be securely held - unless I get a very expensive machining centre.
So it is 2.5D

Phil