[CAUT] Bushing cloth thickness

[Mark Cramer]

Perhaps the difference in the cloth Ed, is because the key-bushings are getting a "permafree" treatment at the factory?

As for the "knockier" quality imparted to the felt by compressing the fit and/or ironing, we find this a very liveable trade-off for the closer tolerance of fit. (very much like the um... er... "Faustian" decision to return to leather)   

In actual playing, the less sideplay, the less discernable the "knock," if any at all. 

The odd time we have ended up with a loose initial fit, and tried the bushings "un-ironed" as a test. 

However, when the bushing rides the pin down, much like normal playing conditions, even on a polished/Pro-lubed pin, there is a definite sensation of the fuzzy un-finished felt, and I don't like it! 

Moreso IMHO, at the front-rail, than at the balance pin. (again JMHO)     

BTW Ed, despite my reference to impromptu manicure, I seriously would like to know what "grit" you use/recommend on the drum-sander for leather-sizing. 

You too Jim (and others), what grit do you suggest? (I'm not taking it too personal, but BYU is still bouncing my e-mails... guess I could always use the phone eh, I mean "huh?" :>) 

thanks,
Mark Cramer,
Brandon University






 -----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org]On Behalf Of A440A at aol.com
Sent: Wednesday, August 01, 2007 2:27 PM
To: caut at ptg.org
Subject: Re: [CAUT] Bushing cloth thickness


    Fred writes: 

    Pianotek sells Hainesworth cloth, same felt that Steinway and Renner use to the best of my knowledge (both did last I asked). If there is any other quality bushing felt out there available to us techs, I’d like to know about it


  I have to say that the Pianotek cloth does not look or feel the same as the Steinway stock.  The factory cloth is much stiffer, and the appearance is certainly not the same.  There is more fuzz on the Pianotek cloth and the nap feels softer.  
  Regards, 

  Ed Foote RPT



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