A DEFINITION PLEASE

[Drcal]

From an ignorant member....
Can somebody define what "run out" is in woodturning?

The reason I ask. I read some negative reviews of the PSI collet chuck where people complained of run out.

I bought one because I read at least 10 reviews where users raved about it and thought it was as good, if not better, than Beall). I used it tonight for the first time with no problems at all.....which for me is like a miracle (because I always manage to mess something up.)
I loved it.


Carmen
Tampa Bay

 

[JBCustomPens]

A lot of run out means that it doesn't turn in a complete circle, so it creates items that are out of round.

No run out means that it turns in almost a perfect circle, or perfectly round.

 

[snyiper]

Runout is usually the amount out of round if I am not mistaken. Take the centerline and measure to the edge on one end and do the same on the other the difference would be run out.

 

[holmqer]

The preceding comments are pretty good, but a good way to visualize it is to imagine a pencil held in the collet chuck, and a piece of paper just touching the pencil tip. If there is no runout, with the spindle turning the pencil will just make a point. If there is runout, the pencil will draw a circle, the worse the runout, the bigger the circle.

 

[DurocShark]

The preceding comments are pretty good, but a good way to visualize it is to imagine a pencil held in the collet chuck, and a piece of paper just touching the pencil tip. If there is no runout, with the spindle turning the pencil will just make a point. If there is runout, the pencil will draw a circle, the worse the runout, the bigger the circle.

Excellent description.