---------------------- multipart/alternative attachment Dale, Internet was down for a little over 24 hours. Sorry to reply so=20 late. I was questioning wether there was some formulae that you used to=20 calculate what thickness of panel you will use based on the species=20 selected. Naturally this also hinges upon what type of panel support you=20 plan i.e. RC&S or CC. Greg At 09:21 PM 2/22/2005, you wrote: > > Greg >Which Part? > Dale > > > >Dale, > How do you determine this? Is there some formula? > >Greg Newell > > > >At 09:51 AM 2/18/2005, you wrote: > > Dave > > Another variable to keep in mind is that many of us are using sitka > > spruce panels & the older designs used predominantly a softer eastern > > wood. Softer wood under compression requires more thickness for strenght > > to survive. WHere as Sitka is stiffer denser having the greatest= strength > > to wieght ratio. SO it can be thinner in the designs of any kind. It > > depends on your idea of mass in the panel too. > > I keep that in mind when I'm choosing panel thickness. This is also= a > > variable that could effect part of the equation for hammer selection. > > I.E> many old Stwy A 2s had panels routinely .360 in the main part of > > the panel. With Sitka .320 to 340 is plenty even if you were stricitly > > compression crowning. > > Dale > > Greg Newell Greg's piano Fort=E9 mailto:gnewell@ameritech.net=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/79/15/c8/ab/attachment.htm ---------------------- multipart/alternative attachment--
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