The Acoustic Guitar Forum

Go Back   The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Build and Repair

Reply
 
Thread Tools
  #16  
Old 05-11-2021, 09:56 AM
warfrat73's Avatar
warfrat73 warfrat73 is offline
Charter Member
 
Join Date: May 2010
Location: Syracuse
Posts: 3,919
Default

Quote:
Originally Posted by Dan Pack View Post
The main top or back resonance is what is referred to when the they are coupled to the sides, or when the are held in a rigid temporary form.
Ahhh... that helps, thank you.
__________________
"What have I learned but the proper use for several tools" -Gary Snyder

Bourgeois DR-A / Bowerman "Working Man's" OM / Martin Custom D-18 (adi & flame) / Martin OM-21 / Northwood M70 MJ / 1970s Sigma DR-7 / Eastman E6D / Flatiron Signature A5 / Silverangel Econo A
(Call me Dan)
Reply With Quote
  #17  
Old 05-11-2021, 10:00 AM
Dan Pack Dan Pack is offline
Registered User
 
Join Date: Apr 2021
Location: Northern California
Posts: 9
Default

Quote:
Originally Posted by Howard Klepper View Post
Dan, this is a place where it really shows that you have been reading too much Somogyi, and that you have done too little repair of old guitars.
Guilty on both accounts I'm pretty new at this and it is a hobby, so I've only done like 2 repairs so I've clearly got lots to learn.

someone mentioned Trevor Gore. I'll look his book up. I've heard him referred to a lot by other people. I'm interested in hearing as many opinions on the subject as possible. And ultimately I know experience is the best teacher, so it may be a bit slower learning curve for me due to the fact that its a hobby.

thanks again.
Reply With Quote
  #18  
Old 05-11-2021, 11:06 AM
charles Tauber charles Tauber is offline
Registered User
 
Join Date: Feb 2011
Posts: 8,381
Default

Quote:
Originally Posted by Dan Pack View Post
someone mentioned Trevor Gore. I'll look his book up. I've heard him referred to a lot by other people.
If Somogyi's books are a largely qualitative approach, Gore's books are a largely quantitative approach.

Quote:
I'm interested in hearing as many opinions on the subject as possible.
The potential downfall of gathering too many opinions is paralysis by analysis. One guy opines "white", another guy opines "black". Each works for the respective builder. You are left not knowing what to do, who's advice to follow. The old expression, "Too many cooks..."

Then there is the issue of subjective opinion versus objective evidence... The large gaps in what is actually known about guitar making are filled with unsubstantiated opinion ("belief") that "you do this" and "you get that result".
Reply With Quote
  #19  
Old 05-11-2021, 12:19 PM
Howard Klepper Howard Klepper is offline
Registered User
 
Join Date: May 2008
Location: Earthly Paradise of Northern California
Posts: 6,627
Default

Quote:
Originally Posted by Dan Pack View Post
Guilty on both accounts I'm pretty new at this and it is a hobby, so I've only done like 2 repairs so I've clearly got lots to learn.

someone mentioned Trevor Gore. I'll look his book up. I've heard him referred to a lot by other people. I'm interested in hearing as many opinions on the subject as possible. And ultimately I know experience is the best teacher, so it may be a bit slower learning curve for me due to the fact that its a hobby.

thanks again.
I was not suggesting that you move from one book on theory to another. My point is that the main reason for bracing and most other aspects of guitar construction is structural: making the guitar stay together with its geometry adequately intact while not overbuilding it. Ervin mostly ignores that and treats bracing as if it is there just to shape the lower vibration modes. I have not read Gore's book (and have only skimmed Ervin's), but I have some reasons to doubt that it will get you the perspective I am talking about.
__________________
"Still a man hears what he wants to hear, and disregards the rest."
--Paul Simon
Reply With Quote
  #20  
Old 05-11-2021, 02:17 PM
Talldad Talldad is offline
Registered User
 
Join Date: May 2016
Location: Uk
Posts: 113
Default

Quote:
Originally Posted by Howard Klepper View Post
I was not suggesting that you move from one book on theory to another. My point is that the main reason for bracing and most other aspects of guitar construction is structural: making the guitar stay together with its geometry adequately intact while not overbuilding it. Ervin mostly ignores that and treats bracing as if it is there just to shape the lower vibration modes. I have not read Gore's book (and have only skimmed Ervin's), but I have some reasons to doubt that it will get you the perspective I am talking about.
I think you would like an afternoon reading Gore, this is very much his approach.
Reply With Quote
  #21  
Old 05-11-2021, 03:48 PM
redir redir is offline
Registered User
 
Join Date: Aug 2011
Location: Mountains of Virginia
Posts: 7,657
Default

In addition to all this fine advice you may consider thinning the top around the perimeter of the lower bout to loosen it up a bit. Classical guitar makers have done this for many years and some steel string makers do now too. Typically youthin from an imaginary line parallel the bridge and just above it drawn to the edge of the lower bout all way round to the other side about 2inces thick

Do it before binding the instrument so that you can measure it and keep an eye on it. Tap and listen as you go. I always do it with a closed sound box.
Reply With Quote
Reply

  The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Build and Repair

Thread Tools





All times are GMT -6. The time now is 08:48 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ©2000 - 2022, The Acoustic Guitar Forum
vB Ad Management by =RedTyger=