Parting off - Left over nib

[JimDobson]

Is there a way when parting off to have the left over nib (that at least I always get) stay on the piece that's in the chuck and not on the piece that's been parted off?
I've tried adjusting my parting tool every which way over the years and never managed to have that nib not end up on the parted piece.
Anyone have any hints?

 

[RM-MN]

When your cut gets almost to the center the piece away from the chuck will bend away from the parting tool just a tiny amount before the tool completes the cut. I don't think you can avoid the nib on that part.

 

[Vietti]

Try grinding a slight angle on the end of the parting tool so the cut off piece is cut deeper than the stock-kind of works

 

[timo_gross]

You "clearly need" a 2nd spindle


I really wonder if a spinning chuck in the tailstock would help to make the "nib" smaller. (I feel guiding small parts by hand helps a little to get smaller "nibs".

 

[L98fiero]

Is there a way when parting off to have the left over nib (that at least I always get) stay on the piece that's in the chuck and not on the piece that's been parted off?
I've tried adjusting my parting tool every which way over the years and never managed to have that nib not end up on the parted piece.
Anyone have any hints?

If you are using inserts, there are left, right and neutral angle inserts, the left and right angle ones determine where the 'nib' is or if you are parting a tube, where the bur is left. The same can be done with a high speed steel parting blade. It should be noted though that especially with the HSS tools, they tend to wander.