Terry, I think a hammer rail that is about 1.5" thick as heavy. Engineered wood is wood glued up in laminations, ideally this is much less vulnerable to flexing a crown with humidity changes. There will be, of-course, some of the usual tightening and loosening of screws in wood. Andrew Anderson At 09:30 AM 3/5/2007, you wrote: >In the world of all-wood rails, I have only seen solid wood (usually >hard maple). What is a "heavy engineered wood" rail? > >Terry Farrell > >----- Original Message ----- >>The brass clad rails aren't as bad as the aluminum rails for just >>plain clunky action noise which can take over in pianissimo >>playing. The fine pianos I've encountered use heavy engineered >>wood rails to resist dimensional movement with the climate and they >>have quiet actions. The little brass clad rails are rather >>flexible under exuberant playing. There have been instructions >>posted to couple them to help stiffen them a little by coupling two >>rails. They are also difficult to get solid alignment on >>especially when you want to reduce casting a little. >> >>Andrew Anderson >> >>At 10:52 PM 3/4/2007, you wrote: >> >>>>Just curious, and something I've always wondered about - what do >>>>you think are the advantages/disadvantages of wooden action rails >>>>vs. metal vs. metal-clad hardwood? >>>>Terry Farrell >>> >>>For me, stiffness, and ease of traveling and alignment with wooden >>>rails. The question is, what is the justification for brass clad >>>tubular action rails? >>>Ron N >
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