Hey Guys, As a rule of thumb, all epoxies are derived from a few simple things. A resin which is likely purchased from DOW chemicals no matter who puts their name on it, and a reactive agent. Thinner epoxies such as West system are thinner because they add a chemical called a "reactive diluant".... which is a thin liquid which "kicks" or reacts along side of the reactant as opposed to disolving such as acetone. If you are to do a pinblock, you have to consider 2 simple things. Hardness and saturation. A 5-1 ratio should translate to a hard epoxy used for laminates, and coatings. IE, finishing. If that sounds like what you have, than that is good. The hard epoxy will saturate the maple as long as the open time is ample.... 30min or more..... and because it is hard it will aid the existing wood in hardness while filling open pores. Even so, let that pinblock sit for a week before you pin it. Otherwise, the soft epoxy will run fluid on you when you turn the pins and the pins will be glued in. The only reason I know this is because whenever we build pinblocks for victorians, we put a solid maple stretcher along the bottom of the laminate block.... using epoxy. Pins will get caught up in it if you are hasty. Good luck, and be sure to oversize those pins either way. God bless, Mark Perry > > Yes I know I considered it but came to the conclusion that I'm better not spend too much on a 4'10'' grand... > But this is also the occasion to try a new technique instead of trowing the old block to fire I have to try it don't you think? I'll have the occasion to put a new pin bloc on another one. > > -----Message d'origine----- > De : pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] De la part de David Ilvedson > Envoyé : 6 octobre 2009 13:28 > À : pianotech at ptg.org > Objet : Re: [pianotech] Epoxy for pinblock > > You don't want to put in a new pinblock for practice? That would seem to be more in the restore arena... > > David Ilvedson, RPT > Pacifica, CA 94044 > > ----- Original message ---------------------------------------- > From: "Pierre Pouliot" <ppk2 at globetrotter.net> > To: pianotech at ptg.org > Received: 10/5/2009 9:12:11 PM > Subject: [pianotech] Epoxy for pinblock > > > >I have a cheap grand to restore. The kind that does not really worth > >it. I'm doing it to learn and practice. For simplicity (and economy), > >I'll try to fill the partially delamited pinblock with epoxy. I saw the Epotek 301 is a recommanded product. > >I'm trying to order some. But what if I use standard epoxy. I use 5 > >to 1 regular lamination epoxy for a lot of general work. It work well > >on wood. We used it for building boats (epoxy on cedar). the question > >is how will it hold pin torque? Any recommandations before I try it? > > > _____ > > >J’utilise la version gratuite de SPAMfighter pour utilisateurs privés. > >Jusqu’à présent SPAMfighter a bloqué 3204 courriels spam. > >Nous avons en ce moment 6 millions d’utilisateurs de par le monde entier. > >Les utlisateurs payants n’ont pas ce message. Vous pouvez > >télécharger la version gratuite <http://www.spamfighter.com/lfr> > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.420 / Virus Database: 270.14.4/2416 - Release Date: 10/06/09 06:50:00 > > -- > J’utilise la version gratuite de SPAMfighter pour utilisateurs privés. > Jusqu’à présent SPAMfighter a bloqué 3205 courriels spam. > Nous avons en ce moment 6 millions d’utilisateurs de par le monde entier. > Les utlisateurs payants n’ont pas ce message. Vous pouvez télécharger la version gratuite: http://www.spamfighter.com/lfr > _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091007/47d03b84/attachment-0001.htm>
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