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Private member DiscussionAcoustic Repair

Martin Bridge Plate Crack

Hey all. I have a Martin D18 with a severe belly up. The bridge has nearly popped off all the way at the time it was brought to me. Looking inside, the bridge plate has a crack going across all the pin holes. There's a few additional cracks above them toward the sound hole. Replace, or not replace, that is the question? Is this plate salvageable, with a tool like StewMax's BridgeSaver? I'm planning to heat treat the footprint of the bri…

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Private member
I'm all about the path of least resistance and filling with epoxy sounds good to me. But you mention watching out for additional cracks. What about the cracks on both sides in the plate above the pin…
Private member DiscussionAcoustic Repair

Suggestions for my crack problem?

Hello everybody, I have a 2001 Guild 12-string in my shop that I suspect got a little too hot in a car. The extent of the damage is what you see here, the two cracks in the top and some warped binding where it meets the neck. I don't see any loose or damaged bracing. After looking into it a little, I found Frank Ford's approach: http://www.frets.com/FretsPages/Luthier/Technique/Guitar/Structural/Cracks/D45FBTopCrack/d45fbtopcrack.html b…

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Ian Davlin
Are you talking about for the underside, like a cleat etc ?
Private member DiscussionElectric Builds

2D Printing Saves The Day

We hear a lot in LoothLand these days about 3D printing. I think it's an awesome use of that technology for what we all do. With my long history with AutoCad and 3D rendering in my previous life, I should pull the trigger on a 3D printer, but I'm just not ready yet AND I have no available space for one in my little shop or in my office right now. Yes, 3D printing is great, but sometimes, good ole regular printing can be a surprise frien…

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Ian Davlin
Awesome! Great idea.
Private member DiscussionAcoustic Repair

Laminated Neck Split

Does anybody have any advice on where to start on repairing this crack. I have some ideas about what I would do but its pretty intense and am hoping someone might have some simpler advice. This is a friends guitar that is THE guitar and they're on a budget. So I'm trying to help them out. I don't currently have access to the instrument.

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Private member
Don't have access to it right now unfortunately so I'm not sure.
Private member DiscussionAcoustic Repair

Binding repair on 70's J-45

Would love some advise on how to stabilize/repair this tortoiseoid binding on a 70's J-45... I'm thinking of wicking gluboost ultra thin into the cracks and then building up the missing areas with the thicker viscosity gluboost. Am I on the right track? Thanks in advance for any wisdom you all might be willing to share...

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Ian Davlin
For small areas you might be able to do it with GB. Tortoise is such a busy pattern that cutting it out and replacing it is often the faster move. If you go in for the idea that the rot is chemically…
Private member DiscussionNeck Reset Database

Gibson LG-1 1957 fingerboard extension glue will not loosen

Today I have spent the better part of five hours attempting to get the fingerboard extension free on this guitar. I am using the method I have used for dozens of neck resets: 100 watt halogen bulb with heat shields. After a couple hours I thought I was making some progress under one corner, only to discover after some movement that my palette knife was going through the top. I then abandoned that area and have been applying heat and…

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Ian Davlin
There's a lot going on here. So I'll make a list The lightbulb I use is the 250 watt infrared bulb. Not sure how it compares to the halogen. If it is hide glue, I like to add spit to my knife. It's tem…
Private member Discussion3D Printing

F Hole Plugs for Archtop

I drew up and printed these F hole plugs for a customer a little while back, felt like showing them off here. The bottom diamond shaped piece has a M4 nut in it, and is super glued to the body of the plug at its two tips. An M4 screw threads into the nut through the counter-sunk hole in the top of the plug. The entire plug drops into the F hole, and then you can tighten the screw slightly to expand the plug so it clamps itself into plac…

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Private member
Great idea, and I love the idea of comically oversized F holes.
Private member DiscussionTools and Jigs

Poseidon’s Horn: The Ultra-Humidifier

Introducing Poseidon’s Horn! Coming in just shy of 18”, this tubular behemoth is the ultimate mess-free humidification device for closing up those pesky top and back cracks prior to repair. It’s dry to the touch and holds 1000ml of water! The days of finessing a Tupperware through a sound hole are over. Cheap and quick to make! Parts list (Supplies to easily make 10 of them) . Water beads - https://a.co/d/5v5Q2da . Braided sleeving - https:…

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Private member
Well that's pretty damn cool.
Private member DiscussionAcoustic Repair

Fretting a fret slot that won’t hold the fret

Hey all, I’ve got a Prewar Martin on my workbench (1932/33 0-18) and this thing has unfortunately been through the guitar center wringer. I’ve had to reset a fretboard that was glued down with Gorilla glue and as well, rejoint the neck and underside of the fretboard. I had to repair a large deal of tear out that was sitting underneath their fret job and because of that I now have a brittle fret slot all up the board that will not hold a fr…

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Gotta rig up something like this. Been using that clamp for years. Just got the Jaws II a couple weeks ago.
Private member DiscussionAcoustic Repair

Cracked in the head/stock

Looking for advice on the best product and technique for getting adhesive deep into this tight crack. Under string tension, the headplate has a visible stress line but no damage in the finish. The crack does open a bit with a little pressure but I’m hoping to avoid cracking through the HP. Thanks so much

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Yeah I would probably blow in some slightly watered down TB with the ol' compressed air/suction cup method.
Private member DiscussionAcoustic Repair

The Pick Guard Dilemma

New to the Looth Group forum so I hope I'm posting in the right place. I am also relatively new to the trade although I've been a woodworker for a long while. I have a general question for luthiers regarding the repair of a typical pick guard issue. I have 2 early 1970's Martin D35's in my shop with the usual pick guard curling and cracks associated with shrinkage. I've watched luthiers flatten and re-glue these back on the bare wood as…

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Ian thanks for the reply. So to be clear you would glue the celluloid to the bare wood area with Titebond? Or are you saying to seal the old area, maybe with lacquer, and contact adhere the new guard…
Private member DiscussionGeneral

Celluloid Rot

Someone came to me with an old Gretsch afflicted with binding rot. The cream binding was mostly intact, with some pitting and discoloration in various spots, and only a couple of pieces loose. The owner was aware that the only sure cure was the removal of the old binding, and then rebinding the guitar. They didn't want to invest that much money into a repair. I rediscovered a StewMac video from 2017 called "Guitar repair using kitchen…

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Well, given enough time, we shall all be dust. I just hope the Gretsch doesn't come back.
Private member DiscussionElectric Repair

Les paul neck repair advice

Hi, just joined and this is my first post, excited to be a part of the Group! I've been building and repairing guitars and amps for about 15 years but am a better builder than repair person. I have a les paul that has a small but definitely there crack in the neck where the head to neck joint is. It's very tight but does look to be in the wood. Not sure the best method to fixing something like this. I have attached pics for reference. A…

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Update, I tried the naphtha thing. It didn't flow in very much, and I tried to get it to open again without much success so I ended up trying to get some CA glue in and now I'm going to let that dry c…
Private member DiscussionAcoustic Builds

Side thickness recommendation

I am having a little trouble bending my first acoustic sides. The wood is a interlocked mahogany. I am hand bending on a temp controlled 2" curling iron. I have thicknessed the sides down to 1.9mm but still got some wrinkling and cracking trying to bend around the cutaway. I am trying to figure out how to improve this for the next attempt. I have read some conflicting information on how to do this though. Thus far my plan for the next a…

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Private member
Hi Nicholas, I would agree with Anthony, it sounds like you need a larger surface area to heat up the wood. A small pipe only allows you to heat up a small area at one time. I have the ibex bending iro…
Private member DiscussionFinish Repair

How to fix

Hi yall. I have this gibson that got into a fight with a drum cymbal. What would be the best way to tackle this wound. It has dented the wood. But no cracks.

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Ian Davlin
Toner coat is just a coat of lacquer that has color in it. Usually translucent and meant to make a subtle change.
Private member DiscussionFinish Repair

Paint chip out matte finish

Hey everyone, Well I had a bit of a day today. The issue is a paint chip out on a matte finish 3 month old Ibanez RG 421. I was in the middle of a pup install and was backing out the screw holding the 5 way switch. As you can see from the pics there must have been some paint sitting above the screw and well viola! I thought it best to try to glue the chips back in but I used accelerator (BSI) because well I’m a dumb ass and it looks like…

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Thanks Ian. No sadly no local source for gluboost products here in New Zealand so won’t be the quick fix my customer was hoping for, but at least I’m not flailing around in the dark anymore. Cheers I’…
Private member DiscussionFinish Repair

Happy little accident: Guild neck finish repair

Oh, the shame. I knew my mistake the second I tied off the surgical tubing that was being used to clamp multiple cracks and breaks that ran halfway down the neck of this Early 80's Guild D-55. I muttered "Lets hope it doesn't stick too bad".. (It stuck, and it stuck really, really bad.) The mistake I'm referring to is failing to sandwich some wax paper between the finish and the surgical tubing. I was making pressured contact directly to…

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Eek! That’s never easy to swallow but good news is you probably won’t make that mistake again. At least not exactly like that. I’ve gotten halfway decent at finish work because of similar situations I…
Ian Davlin DiscussionJob Postings

Tempe Arizona: Acoustic Vibes Music ($21-26/ Hr)

Acoustic Vibes Music is looking for a lead tech that would primarily be working on Martin and Taylor warranty issues. We are a Martin and Taylor Warranty Service center. So everything from Setups, to making new nuts/Saddles, minor finish repair, refrets, binding repairs, cleating cracks in tops, Pickup installation, strap button installation, pickguard removal and installation, bridge removals and reglue, level crown/polish, and oc…

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