Stock Support on the indexer?

[myxpykalix]

I turned a column round to 2.5" that was 65" long. When it got to about center the stock chattered and I had to exert minimal pressure upwards on stock to keep it from vibrating. Does anyone have suggestions for any type of stock support for long pieces while cutting? thanks

[jhicks]

Jack, you might try a yoke under the piece. Turn a center section round, then cut and attach a yoke to a base or the bed to brace under the piece. Let the piece turn/rest in the cradle/yoke and I think you'll have good support.
Its done on conventional and legacy turnings but I don't have a spindle so only my best guess for a fairly simple fixture.