Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Thu Nov 28, 2024 3:22 am


All times are UTC - 5 hours





Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Side puncture approaches
PostPosted: Sat Dec 11, 2021 4:47 pm 
Offline
Koa
Koa

Joined: Tue Jan 15, 2013 10:00 pm
Posts: 985
First name: Josh
Focus: Build
Status: Amateur
So this week I had a dreadnought arrive in the workshop with a puncture in the side at the location of an output jack:

Image

The puncture is a little more than 3/4” in size. I’m told the guitar was dropped a few feet onto the jack. There was very little internal reinforcement in the area, and what was there was actually a bit askew from where the factory installed the jack.

The customer asked for a jack plate which could cover the damage. Various steel Les Paul style or oval plates from the parts bin didn’t quite fit the curve of the side, so I decided to make one.

I bent a .060” padauk layer and an .060” camphor layer to the right curve and laminated them cross-grain, like plywood. The result was very rigid. Some shaping, drilling and satin nitro and I had this:

Image


I added .070 internal cross-grain reinforcement around the puncture to stiffen the side, hold a longer screw and help prevent any cracks propagating in future.

Image

Now the jack is mounted firmly to the new plate, which bears against a wide stiff portion of the side, to hopefully handle future torque and impact loads on the jack a bit better.

I’m hopeful this repair will be robust enough and the customer is satisfied with it but I don’t like the look of a big jack plate like this on an acoustic.

My question is - what are some different approaches to fixing punctures like this around a jack? Perhaps which actually aim to repair the damage rather than reinforce and hide the area. I’d like to knock a few holes in my workshop test mule and practice some more aesthetically pleasing techniques for future use.



These users thanked the author joshnothing for the post: Chris Pile (Sat Dec 11, 2021 5:19 pm)
Top
 Profile  
 
PostPosted: Sat Dec 11, 2021 5:20 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 5824
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
That's as good an option as any, Josh. Wait until you get your first bullet hole.....

_________________
"Act your age, not your shoe size" - Prince



These users thanked the author Chris Pile for the post: joshnothing (Sat Dec 11, 2021 5:47 pm)
Top
 Profile  
 
 Post subject: Side puncture approaches
PostPosted: Sun Dec 12, 2021 5:38 am 
Offline
Koa
Koa

Joined: Tue Jan 15, 2013 10:00 pm
Posts: 985
First name: Josh
Focus: Build
Status: Amateur
Thanks Chris. I’m still working on my repair chops, if anything like that shows up I’ll refer the owner to a luthier of greater caliber.



These users thanked the author joshnothing for the post: Chris Pile (Sun Dec 12, 2021 9:19 am)
Top
 Profile  
 
PostPosted: Sun Dec 12, 2021 9:19 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 5824
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
CLEVER! You are fitting right in here.

_________________
"Act your age, not your shoe size" - Prince



These users thanked the author Chris Pile for the post: joshnothing (Sun Dec 12, 2021 3:19 pm)
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 21 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