[pianotech] Does shank glue fill affect voicing?

[Ron Nossaman]

André Oorebeek wrote:
> 
> I always glue my own hammers. I drill the hammers and then ream them, 
> so, that the holes are slightly bigger than the shanks.
> The hammers are supposed to even wobble on the shank.
> I then use a white glue, an expanding glue (exactly the same glue Yamaha 
> uses for that purpose) which completely fills up the extra space around 
> the shank. 

André,
What is the glue Yamaha uses? I've never been able to get a 
name for the stuff.
Ron N