***** 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 Sun Nov 24, 2024 8:55 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
  [ 8 posts ] 
  Print view Previous topic | Next topic 
Author Message
dofthesea
PostPosted: Fri Sep 08, 2023 8:48 pm 
Offline
Contributing Member
Contributing Member

Joined: Sat Sep 14, 2013 9:46 pm
Posts: 784
Location: Napa Valley
First name: David
Last Name: Foster
City: Napa
State: CA
Zip/Postal Code: 94558
Country: USA
Focus: Build
Status: Amateur
What is everyone's favorite classical guitar top and back radius. I've been building my acoustic steel string and Ukuleles with 30 and 15.

_________________
https://www.instagram.com/fostinoguitars/
https://www.facebook.com/PuraVidaUkuleles/
Top
 Profile  
 
Jim Watts
PostPosted: Fri Sep 08, 2023 9:16 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2968
Location: United States
I don't use a radius dish for my classical guitars. I made a solara that has a scooped out lower bout about 2mm deep and flat out at the rim. Seems to work well and is a pretty traditional way to do it.

_________________
Jim Watts
http://jameswattsguitars.com


These users thanked the author Jim Watts for the post: dofthesea (Sat Sep 09, 2023 6:56 pm)
Top
 Profile  
 
Mike Collins
PostPosted: Sat Sep 09, 2023 6:40 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Mon Mar 06, 2006 10:10 pm
Posts: 2485
Location: Argyle New York
First name: Mike/Mikey/Michael/hey you!
Last Name: Collins
City: Argyle
State: New York
Zip/Postal Code: 12809
Country: U.S.A. /America-yea!!
Focus: Build
Status: Professional
28 for tops 25 for backs
Mike

_________________
Mike Collins


These users thanked the author Mike Collins for the post: dofthesea (Sat Sep 09, 2023 6:56 pm)
Top
 Profile  
 
TRein
PostPosted: Sat Sep 09, 2023 6:52 am 
Offline
Koa
Koa

Joined: Thu Aug 31, 2006 11:42 pm
Posts: 698
Location: United States
First name: Tom
Last Name: Rein
City: Saline
State: Michigan
Focus: Build
Jim Watts wrote:
I don't use a radius dish for my classical guitars. I made a solara that has a scooped out lower bout about 2mm deep and flat out at the rim. Seems to work well and is a pretty traditional way to do it.

Right on. A solera is not confined to a single radius. You can enforce more dome in front of the bridge compared to behind the bridge. And a flat rim/soundboard plane just looks right to me, as well as making subsequent steps of attaching the back simpler.

_________________
Stay with the happy people.
--Reynolds Large


These users thanked the author TRein for the post: dofthesea (Sat Sep 09, 2023 6:56 pm)
Top
 Profile  
 
wbergman
PostPosted: Sat Sep 09, 2023 11:08 am 
Offline
Koa
Koa

Joined: Mon Dec 18, 2006 9:42 am
Posts: 1577
Location: United States
Some people use a cylindrical shape. Plans for Jose Ramirez III guitars seem to indicate cylindrical in the lower bought.
Top
 Profile  
 
Dave m2
PostPosted: Sat Sep 09, 2023 11:36 am 
Offline
Cocobolo
Cocobolo

Joined: Sun Oct 09, 2016 12:18 pm
Posts: 403
Location: Somerset UK
State: West Somerset
Country: UK
Focus: Build
Status: Amateur
8 m that's about 26 ft for tops, 5 m - 16 ft for the backs. Yes quite a tight curve for the back.

The top is not quite spherical as the upper bout is flattened somewhat to accommodate the glueing of the fretboard and allowing for the angle of the neck.

Dave


These users thanked the author Dave m2 for the post: dofthesea (Sun Sep 10, 2023 2:19 pm)
Top
 Profile  
 
oval soundhole
PostPosted: Sun Sep 10, 2023 12:17 pm 
Offline
Contributing Member
Contributing Member

Joined: Tue May 18, 2010 6:42 pm
Posts: 569
First name: Brian
Last Name: Itzkin
State: NY/Granada
Country: USA/Spain
Focus: Build
6 meter radius for the back but my tops don't have a consistent radius. Depending on the model my top doming is anywhere from 1.5 to 3 mm


These users thanked the author oval soundhole for the post: dofthesea (Sun Sep 10, 2023 2:19 pm)
Top
 Profile  
 
Alan Carruth
PostPosted: Sun Sep 10, 2023 2:16 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Sat Jan 15, 2005 12:50 pm
Posts: 3927
Location: United States
I use the same radii on Classicals that I use on steel strings: 15' back and 25' top. I've heard lots of claims about the acoustic advantages of one or another number or system, but I don't see how you could ever 'prove' anything there. I dome the plates because rapid changes and low wintertime humidity make New England guitar hell, and it seems to help reduce cracking.


These users thanked the author Alan Carruth for the post: dofthesea (Sun Sep 10, 2023 2:19 pm)
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » Luthiers Forum Rooms » Guitar Building Forum

All times are UTC - 5 hours


Who is online

Users browsing this forum: stumblin and 25 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