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
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