Nature of tuning pins, why technicians prefer blue, pinblock material

[Ron Nossaman]

> I too have found Denro pins to be quite reliable in most situations. But I
> use pinblocks that are more forgiving (Maple 1/4 sawn or medium laminate
> maple, depending on the piano and what was originally in there). Curiously,
> I have found that the medium laminate maple blocks (standard commercial
> rotary cut block from Schaff or Pianotek) actually hold the pins a little
> more tightly, and uniformly, for a given drilling procedure, but the 1/4
> sawn block just "feels" better when tuning. 

Try the composite.

Ron N