I think I just learned something.

I am trying to bore a 5 inch diameter hole in 6 inch diameter aluminum bar stock about 5 inches deep.

I was getting tool chatter.  At first I thought I needed a stiffer boring bar. My boring bar is about .75 inch in diameter.

I discovered if you speed up the carriage feed the chatter goes away more or less.

Some of you guys on here are expert machinist.

Have you heard of this before ?

Paul Lamar

Paul,
The added chip load stabilizes the cutter and gets it on a different frequency.
Larry Childs

Thanks Larry.

Nice to know.

Paul Lamar


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