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 Post subject: Side puncture approaches
PostPosted: Sat Dec 11, 2021 4:47 pm 
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Koa
Koa

Joined: Tue Jan 15, 2013 10:00 pm
Posts: 605
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)
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PostPosted: Sat Dec 11, 2021 5:20 pm 
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Joined: Sun Mar 06, 2011 12:04 am
Posts: 5321
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.....

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"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)
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 Post subject: Side puncture approaches
PostPosted: Sun Dec 12, 2021 5:38 am 
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Koa
Koa

Joined: Tue Jan 15, 2013 10:00 pm
Posts: 605
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)
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PostPosted: Sun Dec 12, 2021 9:19 am 
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Joined: Sun Mar 06, 2011 12:04 am
Posts: 5321
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.

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"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)
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