Hi,

 

I recently switched out some of my middle finger inserts from a lift to an oval.  I use Vise #4.  Is there a difference in thickness between the two, and does anyone have a suggestion on how much to move my middle finger hole to account for this?  I am guessing there is a small thickness difference, as well as a small change in span that needs to be accounted for.  The change in span would be due to changing the relative pitch of the hole.  I know that when I moved to a forward pitch in my thumb, I had to make my span slightly smaller.  I am guessing that changing to an oval changes your middle finger pitch about 1/4" (away), so that would require a very small increase in span.  I drilled up a new ball with the same hole-to-hole measurements as before, but with the oval insert, the span feels slightly smaller.  Anyone?

 

Thanks, 

 

Edited by dR3w on 6/20/2011 at 9:37 AM