Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Mon Jun 23, 2025 3:42 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: bridge curve
PostPosted: Wed Nov 13, 2013 4:22 am 
Offline
Contributing Member
Contributing Member

Joined: Fri Oct 14, 2011 10:29 am
Posts: 502
First name: joseph
Last Name: sallis
City: newcastle-upon-tyne
State: tyne and wear
Zip/Postal Code: ne46xe
Country: UK
Focus: Build
Status: Amateur
Should the top of the bridge, where the saddle slot is, curve to match the finger board radius?

_________________
We are all in the gutter but some of us are looking at guitars.


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Wed Nov 13, 2013 5:23 am 
Offline
Koa
Koa
User avatar

Joined: Mon Sep 05, 2011 10:45 pm
Posts: 1484
First name: Trevor
Last Name: Gore
City: Sydney
Country: Australia
Focus: Build
Status: Professional
There's not many "shoulds" at all in guitar building! However, one approach is to curve the top of the bridge so that the saddle protrusion is constant across. (i.e. approx [but often tighter than] fretbopard radius, on a tilt to match the higher action of the bass side). So the bridge is thinner on the treble side. This also give you an excuse to talk about impedance matched bridges, should you so desire, :mrgreen: .

_________________
Trevor Gore, Luthier. Australian hand made acoustic guitars, classical guitars; custom guitar design and build; guitar design instruction.

http://www.goreguitars.com.au


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Wed Nov 13, 2013 5:55 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Sep 08, 2010 12:17 am
Posts: 1292
First name: John
Last Name: Arnold
City: Newport
State: TN
Zip/Postal Code: 37821
Country: USA
Focus: Repair
Status: Professional
Martin and several other makers do. I see no reason not to do it.

_________________
John


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Wed Nov 13, 2013 10:10 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7527
First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
I do it, as mentioned, to keep a more constant saddle height from bass to treble.


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Wed Nov 13, 2013 10:40 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Dec 20, 2010 7:15 pm
Posts: 1041
First name: Gil
Last Name: Draper
City: Knoxville
State: Tennessee
Country: USA
Focus: Build
Status: Professional
Yes. Cumpiano/Natelson has a great outline on how to make a Martin style bridge (which is radiused). I use 16" radius for the fretboard but that seems like too much radius for the bridge which is wider, so I use a 20" radius block. I hold the 20" block with some sandpaper in a vise and rub the top of the bridge on it until the radius is achieved. You want to take down the treble side a little bit more than the bass side. Takes about 2 minutes.


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Wed Nov 13, 2013 12:16 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6261
Location: Virginia
At some point in the future when a repairman gets the guitar in to lower the action he's gonna plane a curve into it anyway, so ya may as well do it now. Unless of course you don't want too :)


Top
 Profile  
 
 Post subject: Re: bridge curve
PostPosted: Thu Nov 14, 2013 4:34 am 
Offline
Contributing Member
Contributing Member

Joined: Fri Oct 14, 2011 10:29 am
Posts: 502
First name: joseph
Last Name: sallis
City: newcastle-upon-tyne
State: tyne and wear
Zip/Postal Code: ne46xe
Country: UK
Focus: Build
Status: Amateur
That's great, thanks for replies. Issue cleared in my mind.

_________________
We are all in the gutter but some of us are looking at guitars.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: J De Rocher and 16 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