Laminated ribs and grain angle

[Farrell]

This is a multi-part message in MIME format.

---------------------- multipart/alternative attachment
And this leads me to a concept I have never been at peace with: panel =
flitch width. Seems that a popular target flitch width is maybe about =
four inches. I have trouble imagining how a number of narrow flitches =
would be detrimental to the soundboard. That would allow use of some of =
this non-optimal-grain-angle wood by resawing to quarter it. Now =
certainly more work would be involved, but I see that as the only =
downside. Some may suggest appearance, but I don't see that as an issue =
- often the only way I can find flitch joints on a subpanel is to look =
for the squared-off ends - straight grain and consistent color make =
joints nearly invisible. Is there something else I need to get a grip of =
to understand this?

FWIW, I most often use 45-degree grain-angle (non-nicely quartered) =
spruce for rib laminations. I reverse the grain angles from lamination =
to lamination like below, thinking this may maximize stability. Don't =
know this really does anything except make me feel better - but it most =
certainly does do that (please don't burst my bubble).

/////////
\\\\\\\\\
/////////
\\\\\\\\\
/////////
\\\\\\\\\

Terry Farrell

----- Original Message -----=20
From: "Ron Nossaman" <RNossaman@cox.net>
To: <davidlovepianos@earthlink.net>; "Pianotech" <pianotech@ptg.org>
Sent: Tuesday, November 11, 2003 7:56 PM
Subject: Re: Laminated ribs and grain angle


>=20
> >How critical is grain angle when making laminated ribs?
> >
> >David Love
>=20
> Annular ring, I presume, rather than axial... <G> As nearly as I can =
tell,=20
> it's not critical at all. This is handy in letting you use planks with =

> grain angles you wouldn't want in the panel and would otherwise =
discard, in=20
> the ribs
>=20
> Ron N
>=20


-------------------------------------------------------------------------=
-------


>=20
> ---
>=20
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.538 / Virus Database: 333 - Release Date: 11/10/2003
>=20


-------------------------------------------------------------------------=
-------


> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
> 
---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/69/1b/5f/11/attachment.htm

---------------------- multipart/alternative attachment--