Re: finger nail test.
Originally Posted by
GeneK
I think what they are referring to is lower the point into the hole, gently until it is touching all around. I have mine mounted in an end mill holder firmly but still able to slide if I push it down too hard.
If the hole isn't centered the joint where the tip joins the body will be off set. I 'milk' the body with my fingers first, so I feel which side the tip is off set. Re-adjust X or Y until I can't feel the seam. The finger nail test is to run your finger nail up and down across the joint to see if it is really even on all sides.
GeneK
Yup, what GeneK said, amazingly accurate. For holes larger than the edge finder cone, a dial indicator works best for me.
Jim Dawson
Sandy, Oregon, USA