Ron, How do you approach the hammer hanging procedure, jig wise...simple straight edge and guide hammers?...how about right to left tilt and rake? Jim I > > I knurl the shanks again just before hanging the hammers (but I don't knurl > them too hard), because the shanks will swell after knurling to varying > degrees over time. I have found quite a lot of diameter inconsistency from > shank to shank within a new set, even though they were knurled at the time > of manufacture. The process of knurling them again causes the diameter > deviation of the set to be much reduced, which results in much better > control of the clearance between the hammer bore diameter and the knurled > shank at the time of glue-up. I also agree with Joe that the diameter-growth > which occurs once the shank comes into to contact with the glue makes for a > faster set up if the clearances have been carefully controlled. > > It a sheer pleasure to hang a set of hammers when things are going as > intended. Hammer hanging is one of my specialties at our place. > > Image of the hammers being hung on our piano no. 6 > http://users.tpg.com.au/ronovers/hmmr.hng.no.6.jpg > > Ron O > -- > OVERS PIANOS - SYDNEY > Grand Piano Manufacturers > _______________________ > > Web http://overspianos.com.au > mailto:ron at overspianos.com.au > _______________________ > -- grandpianosolutions.com (under construction) Shirley, MA (978) 425-9026 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090610/fbbd8793/attachment.htm>
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