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How dry is too dry"

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Richard Sutherland

Post subject: How dry is too dry"

Posted: Wed Jun 16, 2010 6:33 pm

Mahogany

Joined: Sun Jan 04, 2009 11:16 am
Posts: 42
Location: Florida, USA
State: Florida
Focus: Build
Status: Amateur

Getting ready to buy a moisture meter but don't know what the moisture content should be. Help. Please and thank you.

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RJS

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JohnAbercrombie

Post subject: Re: How dry is too dry"

Posted: Wed Jun 16, 2010 8:10 pm

Brazilian Rosewood

Joined: Fri Nov 03, 2006 6:50 pm
Posts: 2711
Location: Victoria, BC
First name: John
Last Name: Abercrombie
Status: Amateur

Richard-
How are you planning to use your new wood moisture meter?
ie- for planks or for resawn wood for guitars?
Cheers
John

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Richard Sutherland

Post subject: Re: How dry is too dry"

Posted: Wed Jun 16, 2010 8:13 pm

Mahogany

Joined: Sun Jan 04, 2009 11:16 am
Posts: 42
Location: Florida, USA
State: Florida
Focus: Build
Status: Amateur

For acoustic guitar. Resawn wood.

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RJS

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Richard Sutherland

Post subject: Re: How dry is too dry"

Posted: Wed Jun 16, 2010 9:42 pm

Mahogany

Joined: Sun Jan 04, 2009 11:16 am
Posts: 42
Location: Florida, USA
State: Florida
Focus: Build
Status: Amateur

Actualy, both apply

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RJS

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JohnAbercrombie

Post subject: Re: How dry is too dry"

Posted: Wed Jun 16, 2010 11:59 pm

Brazilian Rosewood

Joined: Fri Nov 03, 2006 6:50 pm
Posts: 2711
Location: Victoria, BC
First name: John
Last Name: Abercrombie
Status: Amateur

Richard-
For guitar tops/backs/sides I think most folks just put them in a humidity-controlled room. It only takes a few weeks for the wood moisture to reach equilibrium with the room humidity. You can weigh the wood - when the weight stabilizes, you can assume that the wood is 'in balance' with the humidity in the room. I know that some of the older moisture testers wouldn't work accurately on thinner stock, but modern meters may be better in this regard.

There are tables which give the moisture content of wood in equilibrium with different relative humidity levels:
http://www.woodbin.com/ref/wood/emc.htm.

A moisture meter is useful for planks and thicker wood, especially if you are milling it yourself from logs, running your own kiln, etc.

Cheers
John

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Richard Sutherland

Post subject: Re: How dry is too dry"

Posted: Thu Jun 17, 2010 1:26 pm

Mahogany

Joined: Sun Jan 04, 2009 11:16 am
Posts: 42
Location: Florida, USA
State: Florida
Focus: Build
Status: Amateur

Thanks John. VERY HELPFUL.

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RJS

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the Padma

Post subject: Re: How dry is too dry"

Posted: Thu Jun 17, 2010 10:49 pm

Koa

Joined: Thu Feb 21, 2008 8:57 pm
Posts: 1982
Location: 8.33±0.35 kpc from Galactic center, 20 light-years above the equatorial in the Sol System
First name: duh
Last Name: Padma
City: Professional Sawdust Maker
Focus: Build

How dry is too dry?

Well if you squeeze or rub the wood between your fingers and it turns to sawdust...its too dry.

blessings
duh

Padma

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Audiences and dispensations on Thursdays ~ by appointment only.

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