Agraff Torque

[Thomas Cole]

If you or the machinists are using easy outs, then it can be difficult 
to turn the stud when the easy out is forcing the brass out against the 
threaded hole. That's why it's best to drill with a left-handed bit 
which doesn't distort the stud but snags it with the cutting part of the 
drill bit. If there is some corrosion hampering the removal, you might 
try soaking in some liquid wrench.

Tom Cole

J. R. White wrote:

>I have a question about tight afraffes, relating to a Steinway grand I
>recently encountered.  These agraffes have broken; and, their posts will not
>come out by any means thus far tried.  Professional machinists whom I have
>consulted can't budge them either.  Now what?
>J R W
>  
>