I have a set in a recording studio (Yamaha C7 F ) that I have been monitoring very closely. These were a set of the early prototype hammers, which were much too soft for any performance situations. I ended up juicing them at 10:1 throughout and ended up with a very pleasant tone. Lately the dynamics have been increasing, much to everyone's hopes and the feedback has been very positive. Tom Servinsky ----- Original Message ----- From: "David Love" <davidlovepianos at comcast.net> To: <pianotech at ptg.org> Sent: Friday, November 20, 2009 9:57 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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