[pianotech] broken agraffes

[Ron Nossaman]

On 1/23/2012 12:19 PM, Ed Foote wrote:
> I don't believe all agraffe fractures are due to lack of thread
> clearance, I have seen too many of the modern undercut design break. I
> think it is mainly over-torque at the factory, trying to get them lined
> up. Even with a "zone" offered by the more crushable lip, it seem they
> still miss it by enough to occasionally over stress the studs.
> Regards,

Fine. I haven't seen any broken agraffes at all with undercut shoulders. 
Every one I've run across has been as I described. In either case, it's 
over torquing.
Ron N