Thickness of the Back

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mounirben

Posts: 43
Joined: Sep. 12 2013

Thickness of the Back

Hi,

What is the thickness that you choose four your Backs (Cypress & Indian Rosewood, also i'm considering building a test guitar with Mahagony/Sapelli)

REPORT THIS POST AS INAPPROPRIATE | Date May 22 2015 14:59:01

Andy Culpepper

Posts: 3053
Joined: Mar. 30 2009
From: NY, USA

RE: Thickness of the Back (in reply to mounirben)

I aim for a target stiffness of the back by flexing it with my thumbs just as I do the top. The thickness will vary with the type and properties of the wood you're using. I'll take Rosewood as thin as 1.8 - 1.9 mm sometimes, Cypress sometimes as thick as 2.5 mm. I'd say average would be about 2.0 for EIR and 2.2 for Cypress, usually a bit thinner at the edges.

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Andy Culpepper, luthier
http://www.andyculpepper.com

REPORT THIS POST AS INAPPROPRIATE | Date May 22 2015 19:38:29

constructordeguitarras

Posts: 1754
Joined: Jan. 29 2012
From: Seattle, Washington, USA

RE: Thickness of the Back (in reply to mounirben)

Mine are in the same ballpark as Andy's.

_____________________________

Ethan Deutsch
www.edluthier.com
www.facebook.com/ethandeutschguitars
www.youtube.com/marioamayaflamenco
I always have flamenco guitars available for sale.

REPORT THIS POST AS INAPPROPRIATE | Date May 22 2015 21:44:58

mounirben

Posts: 43
Joined: Sep. 12 2013

RE: Thickness of the Back (in reply to mounirben)

Thank you Andy & Ethan,

Otherwise do you tune your back (tap tone) ? if it a yes, for which note do you tune it.

Thanks again

REPORT THIS POST AS INAPPROPRIATE | Date May 24 2015 21:59:35

constructordeguitarras

Posts: 1754
Joined: Jan. 29 2012
From: Seattle, Washington, USA

RE: Thickness of the Back (in reply to mounirben)

No.

_____________________________

Ethan Deutsch
www.edluthier.com
www.facebook.com/ethandeutschguitars
www.youtube.com/marioamayaflamenco
I always have flamenco guitars available for sale.

REPORT THIS POST AS INAPPROPRIATE | Date May 25 2015 3:31:08