Article about bridge agraffes - function, types

[Ron Nossaman]

> Just curious Ron, what is your reasoning for three points of string 
> contact (front, center and rear) rather than two? Two would bind the 
> string up in some desired way. I can see that three points would lock 
> the string in much more firmly. But two could also - much like the 
> forward termination on most pianos whether it is an agraffe or the capo 
> bar.
> 
> Terry Farrell
> 
> (Not really trying to suggest anything here - just trying to 
> understand.....)

Just the elimination of torque (forward or backward) on the 
bridge, that a two bearing point agraffe would necessarily 
impart. That's it. The other concern was leaving the fore/aft 
bearing point low enough to not have to detrimentally shorten 
bridge height (thus detrimentally compromising bridge 
stiffness) to accommodate the agraffe. Simple minded, 
definitely, but that's how I approach everything.
Ron N