***** Guitar Project Jigs, Tools & Techniques Online Resources Archives OLF Video Page Library of plans MP3 Library Inlay Class
Offical Luthiers Forum





And our community proudly sponsored by:

RC Tonewoods | Stewart MacDonald | LuthiersForum
TasmanianTonewoods | OLF | OLF MERCH
Luthier Suppliers | Pacific Coast Woods | ELEVATE
OLF X | Tasmanian Acoustic Tonewood | Luthiers Forum Store!
Luthiers Forum | OLF Facebook | AVAIL SPACE
OLF | Alaska Specialty Woods | A.Hix Tonewood
Duke of Pearl | Birkonium CNC | Space




Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Tue Nov 26, 2024 10:32 am


Board index » Luthiers Forum Rooms » Guitar Building Forum

All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Print view Previous topic | Next topic 
Author Message
BBailey
PostPosted: Tue May 13, 2008 3:30 pm 
Offline
Mahogany
Mahogany

Joined: Fri Nov 03, 2006 9:37 am
Posts: 62
Location: United States
Hi Gang
I am going to make a half sized steel string guitar and I was wondering if anyone knew of resources for designing the bracing pattern of a little guy like this or should I just go with standard x bracing and downsize it a bit. The instrument will be solid koa all around. Any thoughts appreciated.
Bob
Top
 Profile  
 
WaddyThomson
PostPosted: Tue May 13, 2008 3:35 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9191
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
Seems to me you could go with a pretty major reduction in bracing and top thickness. You'll be dealing with much less string tension.

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars
Top
 Profile  
 
wbergman
PostPosted: Tue May 13, 2008 3:46 pm 
Offline
Koa
Koa

Joined: Mon Dec 18, 2006 9:42 am
Posts: 1577
Location: United States
Even if you bring it up to full tension, such as a terz guitar, the bracing probably should be reduced. I cannot remember (if I ever really knew) the relationship between length of a beam (brace, top wood, etc.) and deflection of a beam supported at both ends, but the deflection under the same load reduces quite dramatically as the length of the beam is shortened. That is, the system becomes much stiffer if you reduce the length without reducing the cross section, and it is not linear.
Top
 Profile  
 
Wade Sylvester
PostPosted: Tue May 13, 2008 3:58 pm 
Offline
Koa
Koa
User avatar

Joined: Fri Jan 07, 2005 3:21 am
Posts: 684
Location: Nashua, NH
Bob,
I would think you could reduce the number of braces as well.
With a thinner x brace, you could have one tone bar and just one finger brace per side, for example. (maybe no tone bar?)
Also, don't over brace the back. (on the lighter side)

I hope to see what you come up with!

Wade

_________________
Wade
Nashua, NH
http://www.wadefx.com
Top
 Profile  
 
Allen McFarlen
PostPosted: Thu May 15, 2008 3:29 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Fri Dec 01, 2006 6:44 pm
Posts: 471
Location: Australia
First name: Allen
Last Name: McFarlen
City: Mt. Sheridan
State: Qld.
Zip/Postal Code: 4868
Country: Australia
Focus: Build
Status: Professional
I'm building a size 5 terz right now. Using 1/4" wide x 1/2" tall braces. One tone bar and one finger brace each side. Lower arms of the X are thinned down to nothing before the linings. Parabolic shaped. Western Red Cedar top at .110 at the bridge and then perimeter thinned in the lower bout. Not finished building yet, but the top has a very nice ring to it.

_________________
Allen R. McFarlen
Barron River Guitars & Ukuleles
Facebook
Cairns, Australia
Top
 Profile  
 
WaddyThomson
PostPosted: Thu May 15, 2008 3:38 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9191
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
Well, crud, we can fix that! Come on, ask some questions. We can get it sounding real thuddy. :D laughing6-hehe

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Board index » Luthiers Forum Rooms » Guitar Building Forum

All times are UTC - 5 hours


Who is online

Users browsing this forum: Melt in the Sun, pkdz and 75 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com