[AUSTINMACHINING]

Hello everyone

Making lighter cuts removes the chatter. But then it would take for ever to machine parts like this. I am already using 4 fl variable helix mills, 3/8" and 1/2" carbide ones.

I have been experiemented a little bit with a indexable 16mm 2 fl mill wich actually cuts nice. In the video I am cutting at 2900rpms, 500ish mm/min feed, WOC 8mm and DOC 3mm. https://www.youtube.com/watch?v=D_HhUJehptc

I also think the sorce of the vibrations might be the Spindle or collumn. But there is no adjustments there. All screws are tight and I can't do anything to the linear ways?

That looks pretty good to me although I've only cut a small amount of 304SS. I was using a Melin 5 flute nACRo coated end mill which allowed me to double my SFM over un-coated carbide. Machining 304 is painfully slow, so anything to speed it up helped.
What grade of steel are you cutting ?.