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Post by high voltage on Jul 18, 2020 10:42:12 GMT -5
Hi All, I was hoping I could get an expert suggestion for keeping my Schaller strap lock screw tight on my Gretsch 5120 hollow body. This is on the neck side of the body.
The hole isn't stripped as I can tighten it down to a stopping point without over tightening but within a few minutes of playing the guitar, the screw starts backing out again. I've used a dab of Gorilla wood glue in the hole and this works for awhile, but eventually loosens also.
Any ideas?
Thanks in advance.
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Post by Leftee on Jul 18, 2020 11:03:27 GMT -5
Some glue and some very fine wood shavings would be my next step. Install the shavings below the finish level of the guitar with just a smidge of wood glue. Then use the screw to cut new threads. You don’t need to fill the hole. Just enough shavings to allow the screw to cut new threads.
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Post by LTB on Jul 18, 2020 11:40:56 GMT -5
What Leftee said! Also, I have always hated the smaller diameter screws that come with Strap Locks. What I do is take the screws that came with the Guitar and using a Grinder I rotate the head of the screw on grinding wheel to reduce the diameter of the Screw's head so it will fit in the Strap Lock button. Doesn't take much. Holds Much better!
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Post by funkykikuchiyo on Jul 18, 2020 14:24:53 GMT -5
What gorilla glue did you use? Their main glue is an expanding polyurethane glue, but they also put the "gorilla" brand name on a bunch of other stuff. No harm in trying wood glue and sawdust/toothpicks, but my guess is that to really hold well you'll have to get that old glue out of there. I haven't looked at the inside at that point in a while, but depending on what anchor block there is on the inside, you might have to be a bit careful. If it was me, I'd drill it out, glue in a dowel, redrill and start over. Alternatively you can just get in there and scrape back whatever glue is in there and blow it out with compressed air, and see how much of the original threads you have left. If you have some thread left at that point where a screwdriver will actually move the screw inwards, you could probably get away with toothpicks and wood glue... hard to say. Just don't be a maniac with it because if you knock the block off that is on the inside, you'll make it a much bigger project.
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Post by Leftee on Jul 18, 2020 14:37:38 GMT -5
^ Yes. That would suck greatly!
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Post by Peegoo 🏁 on Jul 20, 2020 3:57:48 GMT -5
Knocking the block off is a piece of cake to fix; I came up with this method many years ago.
Get yourself a 36" length of 50-lb Nylon monofilament (fishing line). Tie a little loop on one end. Poke the other end through the screw hole into the guitar. Reach into the F hole with a hemostat or other skinny grabby tool (a short wire with a hook on the end works too). Pull out the end of the mono and poke it through the screw hole on the loose block. If the block has a blind hole, through-drill it with a 3/32" drill.
With the mono through the block, tie a small washer (not a knot) 12" from the end of the mono. Apply Titebond glue to the topside of the block, carefully drop it into the guitar through the F hole, and pull the loop on the other end. The mono sucks the block up tightly against the inside of the guitar body, in perfect alignment with the screw hole. Hang up the guitar by the mono for a few hours to dry. When the glue sets up, clip the mono on the outside, reach inside the guitar, grab the 12" loose end of the mono and pull it out. Titebond does not stick to Nylon very well and it slips right out.
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Post by LTB on Jul 20, 2020 5:18:59 GMT -5
Knocking the block off is a piece of cake to fix; I came up with this method many years ago. Now I like this! Thanks If the block has a blind hole, through-drill it with a 3/32" drill Curious, what is a "blind hole"? Never heard of that one.
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Post by Leftee on Jul 20, 2020 7:27:36 GMT -5
Now that repair sucks a whole lot less.
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Bopper
Wholenote
Motor City USA
Posts: 503
Age: 72
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Post by Bopper on Jul 20, 2020 8:01:33 GMT -5
A hole that goes only part way into the block. You'd need to drill all the way through the block to use the fishing line trick.
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Post by LTB on Jul 20, 2020 10:08:24 GMT -5
A hole that goes only part way into the block. You'd need to drill all the way through the block to use the fishing line trick. Ah got it. Thanks
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