Flexible collodion for voicing hammers

David ilvedson ilvey@jps.net
Tue Dec 7 18:38 MST 1999


Horace,

At this time I'll pass, but it might be interesting to experiment 
with.  Isn't it used regularly in Europe?  I had a guy from 
Denmark that talked about it and like the flexibility of it in the 
hammer?  I guess he mean't it never fully hardened?

David I.

Date sent:      	Tue, 07 Dec 1999 11:47:02 -0800
To:             	caut@ptg.org
From:           	Horace Greeley <hgreeley@leland.Stanford.EDU>
Subject:        	Re: Flexible collodion for voicing hammers
Send reply to:  	caut@ptg.org

> 
> David,
> 
> If you seriously want to use some of this stuff, I will gladly let you have
> my remaining stock of about 1.5 pts Ether, and 12oz collodion.
> 
> This is not shippable, so we would have to find time to get together.
> 
> Frankly, in today's market, I am not sure that the results are worth the
> danger and trouble.  Most folks, as Werner Hausmann used to say, listen
> with their pocket books.  Thus, the tone-damaging use of keytop and
> acetone - sounds like @#$%@# but it's fast.
> 
> Please let me know.
> 
> (Besides, my darling bride would _love_ to get this stuff out of her
> freezer...)
> 
> Best regards!
> 
> Horace
> 
> 
> 
> At 10:52 PM 12/3/99 -0800, you wrote:
> >Where can I get collodian or ether or both?
> >
> >David I.
> >
> >
> >Date sent:              Fri, 3 Dec 1999 15:09:43 -0800 (PST)
> >From:                   "S. Brady" <sbrady@u.washington.edu>
> >To:                     caut@ptg.org
> >Copies to:              musutton@alpha.nlu.edu
> >Subject:                Re: Flexible collodion for voicing hammers
> >Send reply to:          caut@ptg.org
> >
> > >
> > > Ed, ether is the solvent for collodian. Flexible collodian is made of
> > > nitrocellulose dissolved in ether. Don't fall asleep on the job!
> > >
> > > On Fri, 3 Dec 1999 musutton@alpha.nlu.edu wrote:
> > >
> > > > Dear List,
> > > >     Anyone out there know anything about "flexible collodion" for 
> > hardening
> > > > hammers?
> > > >     The story is: Steinway hammers, hardened with keytops in acetone, 
> > later
> > > > brightened by addition of flexible collodion, now the tone is "uneven."
> > > >     I've not seen this piano yet; it's a long trip.  What is the solvent
> > > > for collodion?  Can these hammers be saved?  Anybody out there have any
> > > > opinions?  ;)
> > > >     Ed Sutton
> > > >
> > >
> > >
> > > _________________________________________________
> > >
> > > Steve Brady, RPT
> > > Head Piano Technician, University of Washington
> > > Editor, Piano Technicians Journal
> > >
> > >
> > >
> > >
> > >
> >
> >
> >David Ilvedson, RPT
> >Pacifica, CA
> >ilvey@jps.net
> 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 
> Horace Greeley, 			email:	hgreeley@stanford.edu	
> CNA, MCP, RPT				
> Systems Analyst/Engineer		voice:	650.725.9062
> Controller's Office			fax:	650.725.8014
> Stanford University
> 651 Serra St., RM 100, MC 6215
> Stanford, CA 94305-6215
> 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 


David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net


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