[pianotech] Weickert Felt by Ronsen

[William Truitt]

I've used the collodion in the past, but I kept falling asleep at the piano,
don't know why....

Will Truitt

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Ilvedson
Sent: Friday, November 20, 2009 1:36 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Weickert Felt by Ronsen

Andre's book has a recipe for hammer hardner with alcohol instead of acetone
or MEK or Lacquer thinner.   90% alcohol "ketonatus", 4% collodionand, 6%
ether...It would be interesting to discuss the book with those who have read
it...?

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "David Love" <davidlovepianos at comcast.net>
To: pianotech at ptg.org
Received: 11/20/2009 6:57:44 AM
Subject: Re: [pianotech] Weickert Felt by Ronsen


>Straight acetone works also as a solvent for lacquer.  BTW my own solution
>for hardening these hammers is 10:1 through the tenor and bass and about
7:1
>in the treble.  The last set I got definitely needed hardening but was
>produced, apparently, at a time when the sets were coming out too soft.
>Haven't seen a recent set.  I think 4:1 is too strong especially since
>lacquer continues to harden over time.  Best to wait to apply a 2nd coat
for
>at least a couple of weeks if possible.  Of course, it also depends on the
>solids content of your lacquer.  I don't care for plastic as a hardening
>agent either.  For some reason it just produces what seems to be an
>inflexible hammer and a type of hardness that I don't like.  

>David Love
>www.davidlovepianos.com


>-----Original Message-----
>From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
Behalf
>Of Al Guecia/AlliedPianoCraft
>Sent: Friday, November 20, 2009 4:22 AM
>To: pianotech at ptg.org
>Subject: Re: [pianotech] Weickert Felt by ROnsen

>I don't eat it, I just apply it to the hammers <G>

>Not nearly as bad for you as the CA glue we're using. MEK is the most used 
>clean up product in paint chemical labs. I know a few chemists who used it 
>most of their lives and lived to be over 80 yo with no harmful effects that

>I know of. Of course "That I know of" being the operative words here.

>Al