Rebushing centers/mystery center pinning

[Richard Brekne]

Hi Robin,

Nice and informative posting. However I am a bit perplexed here. The 
bushings in question are of the new Steinway type as I understand it. 
And it has been stated that these employ a very dense bushing felt with 
some kind of teflon impregnation.  If that is so, then it shouldnt be 
necessarry to take steps aimed at dealing with too soft a bushing 
felt... yes ?

Are you under the impression that these new Steinway bushings employ 
inadequately densified bushings as delivered from the factory ?

Cheers
RicB


Robin Hufford wrote:

>      They are very unlikely to stay there long at all.  Again, the 
> problem that I see, judging from your description is likely  do to an 
> overly soft  bushing cloth have been used.  They may well, actually, 
> have been sized at the factory but this effort has not densified the 
> bushing sufficiently, which was probably too soft to begin with.  The 
> use of  water again, may render them acceptable,  although I doubt 
> this will occur.
>        In my opinion, it is necessary to do something due to the 
> overly soft cloth, which is similar to what one does when rebushing 
> keys, that is, through a similar process to the glue-sizing done when  
> replacing key bushings which  allows the glue in that case to wick 
> into the felt and size them to a certain dimension.  While we are not 
> actually trying to size the bushing, I think to a certain dimension, 
> we are trying to increase its functionaly density which impregnating 
> the felt matrix with a very thin deposit of plastic does, I believe.