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Ron Belanger
 Post subject: Spider Bridge insert
PostPosted: Sat Nov 14, 2009 7:59 pm 
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First name: Ron
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I am making a spider bridge saddle insert, maple with an ebony cap. What should the grain orientation, relative to the height of the insert, in the maple be? Verical? Horizontal? Diagonal?
I have cut some with the grain vertical and it seems to bend a little more than I think it should.
Any thoughts are welcome.
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JohnAbercrombie
 Post subject: Re: Spider Bridge insert
PostPosted: Sat Nov 14, 2009 10:33 pm 
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Brazilian Rosewood
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Ron-
I don't know if this will help, but fiddle bridges have the piece quarter-sawn- ie the grain lines run parallel to the soundboard.
Discussion and pic:
http://www.lutherie.net/grain.html


Cheers
John (with a reso body still not assembled, hardware in the drawer....)
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the Padma
 Post subject: Re: Spider Bridge insert
PostPosted: Sun Nov 15, 2009 12:03 am 
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JohnAbercrombie wrote:
Ron-
I don't know if this will help, but fiddle bridges have the piece quarter-sawn- ie the grain lines run parallel to the soundboard.
Discussion and pic:
http://www.lutherie.net/grain.html


Cheers
John (with a reso body still not assembled, hardware in the drawer....)




Ummm...John

Yes,
Violin family bridges are definatly quarter sawn.

But NO, the grain does not run parallel to the soundboard, it runs Perpendicular to the grain of the sound board.


Ron,

When you make the bridge out of perfect quartersawn stock...the end grain will show the layerd growth rings hoizontal to the deck of the instrument.

In reality one face of the bridge shuld be perfectly quartered to show the medullary rays, The other face will be slightly off quarter.

Blessings
the
Padma

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Audiences and dispensations on Thursdays ~ by appointment only.


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Ron Belanger
 Post subject: Re: Spider Bridge insert
PostPosted: Sun Nov 15, 2009 10:08 am 
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Thank you both for the replies. I really appreciate it. [:Y:]

Ron
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JohnAbercrombie
 Post subject: Re: Spider Bridge insert
PostPosted: Sun Nov 15, 2009 1:29 pm 
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Brazilian Rosewood
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the Padma wrote:

Ummm...John

Yes,
Violin family bridges are definatly quarter sawn.

But NO, the grain does not run parallel to the soundboard, it runs Perpendicular to the grain of the sound board.


Huh?
Would it be clearer if I'd said 'parallel to the plane of the face of the soundboard'??

Looking at the pic in the link should clear this up.

Cheers
John


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the Padma
 Post subject: Re: Spider Bridge insert
PostPosted: Sun Nov 15, 2009 3:14 pm 
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Koa
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Location: 8.33±0.35 kpc from Galactic center, 20 light-years above the equatorial in the Sol System
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City: Professional Sawdust Maker
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JohnAbercrombie wrote:
Huh?
Would it be clearer if I'd said 'parallel to the plane of the face of the soundboard'??

Looking at the pic in the link should clear this up.

Cheers
John



Ummm ... sorry John,

no it wouldn't.


Image


blessings
the
Padma

_________________
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Audiences and dispensations on Thursdays ~ by appointment only.


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JohnAbercrombie
 Post subject: Re: Spider Bridge insert
PostPosted: Sun Nov 15, 2009 6:10 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Nov 03, 2006 6:50 pm
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Forget about the grain direction of the soundboard for a moment....
..."plane of the soundboard"...


Anyway, 'nuff said (in any font size)
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