Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Fri Nov 29, 2024 12:02 pm


All times are UTC - 5 hours





Post new topic Reply to topic  [ 15 posts ] 
Author Message
 Post subject: Discolored wood?
PostPosted: Mon Jan 14, 2013 11:46 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 just bought a 6' piece of quartersawn 10/4 Mahogany. Got a pretty good deal because there was a crack in one part of it. No biggie since I'm cutting of 3-3.5" at a time to build guitar necks.

In trying not to be wasteful, I cut the 1st piece from where the crack was and turned it on it's side so it's essentially flat sawn. This was the only way to salvage a blank out of that particular section. After facing everything, I noticed a good bit of it looked faded. It had a grey color to it. Does this mean that it's rotten or that it was just exposed to the sun for a while? What I don't want is to build a neck from that particular piece and have it crack or be unstable.

Thanks,
-Aaron

_________________
"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: Discolored wood?
PostPosted: Tue Jan 15, 2013 3:23 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Jan 05, 2005 6:25 pm
Posts: 2749
Location: Netherlands
Could be sapwood, could be simple color variation. Is it as hard/does it plane the same way as the rest of the stock?


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 5:21 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Mon Dec 27, 2010 9:06 pm
Posts: 2739
Location: Magnolia DE
First name: Brian
Last Name: Howard
City: Magnolia
State: Delaware
Zip/Postal Code: 19962
Country: United States
Focus: Repair
Status: Professional
Sounds like sap wood.

_________________
Brian

You never know what you are capable of until you actually try.

https://www.howardguitarsdelaware.com/


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 6:05 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
I guess the reason I'm suspicious is because of the crack that was in the piece. Figured there may be some correlation between the two. This is right in the center, btw. Wouldn't sap wood be near the outer part of the tree?

_________________
"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: Discolored wood?
PostPosted: Tue Jan 15, 2013 6:15 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
Here's a pic


You do not have the required permissions to view the files attached to this post.

_________________
"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: Discolored wood?
PostPosted: Tue Jan 15, 2013 8:18 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Tue Aug 17, 2010 3:31 pm
Posts: 1682
First name: Kevin
Last Name: Looker
City: Worthington
State: OH
Zip/Postal Code: 43085
Country: USA
Focus: Build
Status: Amateur
I'm not sure what that is, maybe some sort of mineral staining?

Does it seem sound in that area, is it softer, can you put your fingernail into it? If it seems the same as the surrounding wood, I'd say its ok.

Kevin Looker

_________________
I'm not a luthier.
I'm just a guy who builds guitars in his basement.
It's better than playing golf.


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 10:07 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
Posts: 3263
Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
It is a hard to tell from that photo but it looks a little bit like Luan mahogany, which is really unsuitable for a neck or anything else. Do you know for certain what species of mahogany this is?


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 7:19 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Mon Dec 27, 2010 9:06 pm
Posts: 2739
Location: Magnolia DE
First name: Brian
Last Name: Howard
City: Magnolia
State: Delaware
Zip/Postal Code: 19962
Country: United States
Focus: Repair
Status: Professional
That looks like a container stain, from shipping. Water damage basically. Can't tell the species from the pic but that pin knot at the edge of your layout is most likely going to cause grief.

_________________
Brian

You never know what you are capable of until you actually try.

https://www.howardguitarsdelaware.com/


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 7:31 pm 
Offline
Koa
Koa

Joined: Sat Apr 19, 2008 10:08 pm
Posts: 1958
Location: Missouri
First name: Patrick
Last Name: Hanna
State: Missouri
Country: USA
I agree with Brian Howard on this one. I think somewhere, some how, the wood was contaminated by drips of some liquid. Could be water, oil, or any manner of other nastiness. I am NOT advising you to chuck all the wood, but if it were mine I would certainly avoid using any of that stained portion. I'll also agree completely with Brian about the pin knot. I'd try to lay things out to avoid it. I'm no expert, but that's my instinct.
Patrick


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Tue Jan 15, 2013 11:18 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
Barry Daniels wrote:
It is a hard to tell from that photo but it looks a little bit like Luan mahogany, which is really unsuitable for a neck or anything else. Do you know for certain what species of mahogany this is?

It's Honduran. It's not a big deal if I don't use that little piece. For right now, I'm just getting my layout, templates & jigs, etc. all sorted out. I figured I'd try to waste as little wood as possible. The place I bought it from (come to think of it) did have some leaks in the ceiling with buckets underneath them. It probably is a water stain. Is that bad?

Thanks for the advice on the pin knot too. What will that do?

_________________
"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: Discolored wood?
PostPosted: Wed Jan 16, 2013 11:43 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
Posts: 3263
Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
A water stain does no harm to the wood other than discoloring it.


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Wed Jan 16, 2013 10:49 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
What about that pin knot? Curiosity is peaked. :?:

_________________
"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: Discolored wood?
PostPosted: Thu Jan 17, 2013 5:22 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Mon Dec 27, 2010 9:06 pm
Posts: 2739
Location: Magnolia DE
First name: Brian
Last Name: Howard
City: Magnolia
State: Delaware
Zip/Postal Code: 19962
Country: United States
Focus: Repair
Status: Professional
absrec wrote:
What about that pin knot? Curiosity is peaked. :?:


It will make the neck difficult to carve. It will most likely look bad when finished, unless the finish is opaque. But most of all it will introduce an amount of instability into the neck and that's not a good thing.

_________________
Brian

You never know what you are capable of until you actually try.

https://www.howardguitarsdelaware.com/


Top
 Profile  
 
 Post subject: Re: Discolored wood?
PostPosted: Thu Jan 17, 2013 7:42 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
Thanks Brian.

By the way, I see you're in Hummelstown. I grew up near the poconos a little outside of Allentown. So, howdy neighbor. :mrgreen:

_________________
"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: Discolored wood?
PostPosted: Wed Jan 23, 2013 11:40 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Apr 02, 2010 10:35 pm
Posts: 2561
Country: USA
Focus: Repair
Status: Professional
Could also be spalt or fungal damage. Especially if it got wet.

_________________
Old growth, shmold growth!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 15 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 30 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