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PostPosted: Fri Jan 04, 2008 1:38 pm 
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Koa
Koa

Joined: Tue Jul 04, 2006 3:24 am
Posts: 744
Location: United States
I am currently working on a radius jig and need to know a few things. What dimensions are your fingerboards? (thickness, width at nut, width at body, scale length)

Thanks!

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Brad
Avon, OH


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PostPosted: Fri Jan 04, 2008 2:08 pm 
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Cocobolo
Cocobolo

Joined: Sat Jun 16, 2007 3:50 am
Posts: 214
Location: United States
For me, thickness varies but I normally start with a blank that is
~3/8" before radiusing.  Sometimes thicker if I want to recess the
truss rod into it a little.



Scale length is variable...I make both basses and guitars.



And I normally taper the board after radiusing.




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 Post subject:
PostPosted: Fri Jan 04, 2008 2:13 pm 
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Koa
Koa

Joined: Tue Jul 04, 2006 3:24 am
Posts: 744
Location: United States
How much taper?

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Brad
Avon, OH


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PostPosted: Fri Jan 04, 2008 2:30 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Sun Feb 27, 2005 10:11 am
Posts: 2167
My boards are a hair over 1/4" at the center.

I use 24.9,(triple o)25.25 (archtop)and 25.4 (Dreadnout)scales.

I usually taper them 3/8" at the 12th fret.

I use a 12"radius for archtops and a 16" radius for flattops.


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PostPosted: Sat Jan 05, 2008 9:39 am 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Tue May 02, 2006 9:02 am
Posts: 2351
Location: Canada
First name: Bob
Last Name: Garrish
City: Toronto
State: Ontario
Country: Canada
Status: Professional
On board thicknesses, old-school guys like Mario like thinner boards (almost down to 3/16"), most guys use 1/4" thickness, and Selmer-style guitars (Michael Collins) use 5/16". It makes sense, most production guitars I've seen these days have 1/4" thick boards, but a lot of old acoustics have thinner boards.

I like 24.5-25" scales on electrics, and 25.34" on acoustics, though I might be prone to try longer and shorter scales on acoustics for different instruments. Longer works better for the way I play chords, shorter works better for the way I play lead on acoustics.

Nut width usually just under 1.75" (1 5/8", 1 11/16")

Width at the 12th fret will be:

(nut width)+(string spread at saddle)+1/4"
------------------------------------------
                      2

That'll give you 1/8" of board above and below the strings.

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Bob Garrish
Former Canonized Purveyor of Fine CNC Luthier Services


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 Post subject:
PostPosted: Sat Jan 05, 2008 9:42 am 
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Koa
Koa

Joined: Tue Jul 04, 2006 3:24 am
Posts: 744
Location: United States
Bob...thanks for the input!

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Brad
Avon, OH


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 Post subject:
PostPosted: Sat Jan 05, 2008 1:20 pm 
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Contributing Member
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Joined: Mon Jan 03, 2005 7:46 am
Posts: 1315
Location: Branson, MO
First name: stan
Last Name: thomison
City: branson
State: mo
Zip/Postal Code: 65616
Country: united states
Focus: Build
Status: Professional
Brad can't wait to see the rig. If it is like the bending and circle(rosette)tools, I bet will be outstanding.


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