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How relief is perfectly adjusted?   You are logged in as Guest
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Ahmed Flamenco

 

Posts: 163
Joined: Feb. 22 2014
From: Egypt

How relief is perfectly adjusted? 
If the fingerboard is 100% flat when it is glued on a mahogany neck without reinforcement should relief be applied?,if so how?
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 9 2015 22:30:53
 
Tom Blackshear

 

Posts: 2304
Joined: Apr. 15 2008
 

RE: How relief is perfectly adjusted? (in reply to Ahmed Flamenco) 
quote:

ORIGINAL: Ahmed Flamenco

If the fingerboard is 100% flat when it is glued on a mahogany neck without reinforcement should relief be applied?,if so how?


Ahmed, are you referring to your guitar build as a new instrument?

If you are, then the straight board will probably pull up to a little curve after the guitar is a few days old.

If you purposely built it completely flat with no curve, after being strung for a few days without frets, then the peak of any curve would be very slight with age. Guitar Wood will bend under any presser to a certain extent.

And the way I make a straight board is to string up the guitar at concert pitch with no fret wire for about a week, and then resurface the fingerboard to be straight, and this will help it stay straight for a longer period of time.

If I wanted the board to have a little curve than I install frets before I string up the guitar and allow the string tension to pull a slight curve that way. Or with carbon strips I build a little curve before installing frets.

I use Spanish cedar for my builds so there might be a slight difference with Mahogany.

_____________________________

Tom Blackshear Guitar maker
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 10 2015 16:18:59
 
Ahmed Flamenco

 

Posts: 163
Joined: Feb. 22 2014
From: Egypt

RE: How relief is perfectly adjusted? (in reply to Tom Blackshear) 
that question for a guitar to be completed
I think the first 3 fret should be in a ramp and higher than the fourth and from the fourth to the end should be straight.
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 10 2015 21:10:27
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