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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