Quote Originally Posted by LMMasterMariner View Post
You are right. Four jaws chuck should be used for this job. I have it but many people don't.
Also, title of this post is Eccentric Turning Setup for 3 Jaws Chuck.
Don't know if your calculations are based on arrow point like in your sketches
or calculations are based on true geometry of the jaws.
I am using graphic method for rough calculations of packing size.
I like the graphics method better, the maths may be correct but have not enough time to read it let alone calculate it.