Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Fri Sep 30, 2022 3:48 am


All times are UTC - 5 hours





Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Ebony/Maple Gluing
PostPosted: Mon Jul 11, 2022 6:50 pm 
Offline
Cocobolo
Cocobolo

Joined: Tue Nov 20, 2012 8:59 pm
Posts: 372
First name: Aaron
Last Name: Thompson
City: Atlanta
State: Ga
Zip/Postal Code: 30308
Country: USA
Focus: Build
Status: Semi-pro
I seem to remember reading a long time ago about gluing an ebony fretboard to a maple neck vs one of the various types of Rosewood (East Indian, Brazilian, Cocobolo, etc.) or Rosewood alternatives (Pau Ferro, Bubinga, etc.). It seemed to revolve around the typical moisture content of each wood. I've heard people reference the topic as if it's common knowledge that the marriage of Ebony and Maple has the potential to reek havoc on a neck if glued up in the wrong conditions. Mainly because Ebony is a drier species compared to other fretboard options. I want to say that there was some trick like storing them in separate climates until ready for gluing but I'm not positive.This is all I remember. I don't know the specifics and I can't seem to find the article where this concept was discussed.

Anyone know what I'm talking about?

_________________
"I'm not going to say that perfection has never been achieved. However, if it has, it probably went unnoticed due to it's lack of character."


Top
 Profile  
 
 Post subject: Re: Ebony/Maple Gluing
PostPosted: Mon Jul 11, 2022 8:05 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
Posts: 2933
Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
That does not make sense. How could one species be drier than another unless they were stored in different conditions. A few years ago I was involved in a semi-production of maple archtops and I made 36 curly maple necks with ebony fretboards. I would have preferred to use carbon fiber rods but that was not part of the design. The woods were stored and seasoned in the same shop and there was no stability issues. They were glued with epoxy.


Top
 Profile  
 
 Post subject: Re: Ebony/Maple Gluing
PostPosted: Tue Jul 12, 2022 3:02 am 
Offline
Cocobolo
Cocobolo

Joined: Thu Feb 09, 2012 4:10 pm
Posts: 265
First name: Chris
Last Name: Reed
City: Stowmarket
State: Suffolk
Zip/Postal Code: IP14 2EX
Country: UK
Focus: Build
Status: Amateur
You might be thinking of the differential rates of expansion, widthways, with humidity. Water based glues would produce this effect, but it would mean the fretboard curling at the edges, not inducing a bow to the neck.

I've only used rosewood - I seem to recall ebony can expand more, but others will know for certain.

Epoxy should avoid this, if it's a major issue.


Top
 Profile  
 
 Post subject: Re: Ebony/Maple Gluing
PostPosted: Tue Jul 12, 2022 6:25 am 
Offline
Cocobolo
Cocobolo

Joined: Tue Nov 20, 2012 8:59 pm
Posts: 372
First name: Aaron
Last Name: Thompson
City: Atlanta
State: Ga
Zip/Postal Code: 30308
Country: USA
Focus: Build
Status: Semi-pro
Barry Daniels wrote:
They were glued with epoxy.

profchris wrote:
Epoxy should avoid this, if it's a major issue.

Interesting... One of my greatest successes was a short scale bass I built for someone back in 2016 and I did glue the Ebony FB with Epoxy for whatever reason.

I'm nearing the end of a pile of Cocobolo fretboards that others have advised me not to use due to it's oily nature. I used Polyurethane glue on them and I don't think they will come apart (for better or for worse) anytime this century. Does anyone know if the two glues are pretty much the same in use? I realize they are different chemical makeups.

_________________
"I'm not going to say that perfection has never been achieved. However, if it has, it probably went unnoticed due to it's lack of character."


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 10 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:  
cron
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com