Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Wed Jul 23, 2025 6:15 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Bridge Gluing Problem
PostPosted: Wed Jan 14, 2009 2:42 pm 
Offline
Cocobolo
Cocobolo

Joined: Tue Nov 27, 2007 2:36 am
Posts: 241
Location: Magnolia, Texas
First name: Chuck
Last Name: Gilbert
Focus: Build
Status: Semi-pro
The bridge has come unglued on my last two builds after being strung up for a day or two. As I usually do, I waited 48 hours after gluing the bridge before stringing the guitar. I've never had this problem before, so I looked at what changed in my building process and the only thing I can think of is that I'm now using a new pedastal buffer to buff out the guitars. I removed the bridge mask before buffing and I think this is my problem. Before gluing the bridge however, I scraped the area clean with a razor blade and thought that I had removed any buffing compound binder that may have been left behind on the bare wood. Has anyone experienced a similar issue? Is there a solvent that I should clean the area with that will not harm a nitro lacquer finish?

Thanks in advance.

Chuck


Top
 Profile  
 
PostPosted: Wed Jan 14, 2009 2:46 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Tue Jan 04, 2005 1:43 am
Posts: 1533
Location: Morral, OH
Buff and THEN remove the mask. You are impregnating WAX into the wood pores. You can use Naphtha to clean it but I doubt anything will get deep into the pores to get the wax out. You may have to route our a few thou of wood and set the bridge in a pocket. Sounds scarry but it will work if your top is thick enough?

_________________
tim...
http://www.mcknightguitars.com


Top
 Profile  
 
PostPosted: Wed Jan 14, 2009 3:52 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Sat Dec 03, 2005 10:04 am
Posts: 2060
Yeah, you've essentially succeeded in thoroughly waxing the wood, effectively doing the same thing as one may do to mask a surface from being glued. I think Tim is right, and you're looking at least at some serious scraping (chisel as opposed to razor), or possibly routing to clean out the contamination.

_________________
Eschew obfuscation, espouse elucidation.


Top
 Profile  
 
PostPosted: Wed Jan 14, 2009 4:43 pm 
Offline
Cocobolo
Cocobolo

Joined: Tue Nov 27, 2007 2:36 am
Posts: 241
Location: Magnolia, Texas
First name: Chuck
Last Name: Gilbert
Focus: Build
Status: Semi-pro
Thanks, guys that's what I suspected. I just tried taking a tiny sanding block - 3/4"x3/4" - and sticking some P120 sandpaper on it and sanding carefully across the grain. It kicks up a surprising amount of dust so I'm going to give sanding and wiping with naptha intermittantly a try before resorting to the dremel and trying to rout. If it doesn't work, then I'll go with the more risky method.

Chuck


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: jfrench and 31 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