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Double Bass Slap King bass repair

This bass was originally sold as a “Slap King” bass...the owner was quite happy with it, playing rockabilly gigs. But he tripped while carrying the bass, and bashed three holes through the lower treble bout.
I neglected to get a good photo from the outside of the “before”. Here’s one of the inside, after I removed the top.
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I’m not sure what he fell on, to get three holes, evenly spaced along a diagonal line, but the plywood in the center of each hole was pretty well pulverized.

I saturated the “wounds” with glue, shoving them to the outside so that the remaining plywood was fairly close to flush with the outside curve, then added a diagonal patch of 1/16” plywood from the inside, gluing, clamping and bracing, to get a very tight fit.


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I ended up having to add a small linen patch on one side, as the inner ply had a crack extending further along the bout.
Then I began excising the pulverized splinters from the strike-zones, and replacing the wood with ovals cut from solid maple rib-stock.
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Then I closed the top, and continued working on the scars:
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Eventually all was close enough to smooth and flush that I began the retouch process:
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And, finally, I could set it up and deliver the bass to the happy customer.
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The damage is not completely invisible, if you know where to look, but from three feet away, even if you know where to look, all you can see is a tiny difference in color.
The owner is thrilled with it, so it’s a win.
 
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Absolutely correct, James! They used Gorilla glue throughout, and it did pose some interesting differences. The biggest was that, instead of hearing the crackling of brittle hide glue fracturing along the seam as I moved the parting knife, I heard an odd “hissing” sound, as the knife severed the foamed polyurethane glue. Only two very small splinters to glue back in place... and, after some pondering, I decided that since gorilla glue was the original choice, and I wasn’t even sure hot hide glue would adhere to it... I bought a bottle of gorilla glue and I closed the top with it.
No idea what I will do with the remaining gorilla glue...

BTW, James, once again, thanks for your friendly counsel regarding the bass. It gave me much-needed confidence with which to proceed!
 
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BTW, James, once again, thanks for your friendly counsel regarding the bass. It gave me much-needed confidence with which to proceed!

Anytime.

I'd like to think that folks around here know that I run a pretty friendly shop. Whenever possible I try to offer perspective and encouragement on individual projects and with other shops all around the country. We are all looking forward to the day pandemic disruptions are part of history and we can go back to regular interaction together.

For the last 10 years I've had Tuesdays at James' where I pretty much forget about getting any of my own work done but I open the shop up. Students and the local luthiers & all of the young jedi's in training come by and problem solve, use the tools and get in a nice afternoon of community. A little sawdust, maybe a sunburst or two, a lot of laughter, a great local lunch, and playing a few tunes out in the sunshine here at corporate headquarters....while sometimes chasing the redtail hawks and bears away from the chicken coop.

Did you guys know that Asheville has just under 200 radio collared black bears that live in the city limits? The bears are one of the few things that outnumber the unemployed bass players & breweries!
 
Misterbadger: that is funny, because I often wish I still lived in Northern California! I spent a lot of time there back in the day when my girlfriend lived in Arcata.


One repair job on a Gorilla Glued bass was enough for me. Never again.

That is a legitimate concern. I'll regularly refuse to work on instruments that have been compromised by the use of epoxy & yellow glue. Just because you can does not mean that you should.........

Thumbs up to Chet for helping out a fellow bass player in need of help!