08-07-2012, 02:48 AM
(08-06-2012, 09:25 PM)dallen Wrote: the guys at the tool house said it was the cheap inserts I been getting from evil bay
In my experience the finishes I am seeing are probably a result of using a negative rake insert on too light a machine or a machine with loose gibs, assuming that is that you are using power feeds, negative rake tools,(so pretty much any tool where the insert has a hole in it) tend to load the toolpost up laterally if the machines rigidity is not at it's best the finish is the first thing to suffer,
The problem being that even the newest machines are designed under the influence of experience gained working with 50-100 year old lathes, in that last 100 years there have been really significant changes in the tools with the CNC industry in mind, but the strength of cross slides and toolposts is almost unchanged.
Best Regards
Rick
Whatever it is, do it today, Tomorrow may not be an option and regret outlasts fatigue.