SV: Re: Reverse Torque tuning pins & reverse crown

[Ron Nossaman]

> I recall that at Baldwin, about 15 years ago, they used a go-no-go gauge
> which was used to check each and every tuning pin that was used in their
> grand production.  If I remember correctly, it was discovered that rolled
> pins tended to be slightly out-of round (oval shaped in cross section), and
> less so with cut threads.  

That was certainly my experience. Out of round, tapered top to 
bottom, or bottom to top, and ranging + - 0.003" or more from 
one to the next, depending on where you measured. The current 
cut thread stuff is much more uniform. It's been a long time 
since I had to mic and sort a set.

Ron N