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Private member DiscussionElectric Repair

Broken Neck Screws on Suhr JM

I had a client dropped off his Suhr JM Classic for a pot replacement yesterday. The fretboard extension hangs over the pickguard on these a little so I flipped it over to loosen the neck screws a tad. I found what looked like 3 missing neck screws and only one screwed in place. The one screwed in place was bright and shiny. I removed that screw and the neck would not budge at all. I focused a pin light into the neck pocket holes to find…

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I finally heard back from Suhr. They quickly admitted that they used to relique all the screw surfaces instead of just the heads, weakening them in the process. This is a known issue in their enterpri…
Private member DiscussionGeneral

Bjorn hide glue

Can anyone shed light on the “high clarity” options that Bjorn offers? I’m looking for an all around glue for most applications, just wondering if there is benefit to the HC options?

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I will try the Nikawa after the Bjorn...I am a sucker for a Japanese product
Private member DiscussionSELL! SELL! SELL!

Neck Jig For Sale

Stew Mac Erlewine Neck Jig for sale, purchased new in May of 2023. Very light use in excellent condition. More photos upon request. Comes with angle vise, shipping based on location. Available for pickup in Fairfield County, CT. $550.00 Erlewine Neck Jig Workstation - StewMac

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Private member DiscussionDesign and Testing

Raising resonant frequencies of a new build

Initial frequency analysis of this D28 copy (done with a temporary 35g bolt-on bridge and the back plate taped on) is VERY LOW. Main air resonance 83.5hz and top monopole 156.6. It's standard Martin scalloped X-bracing with a torrefied Adirondack top. Since I can still easily access the bracing, I'm thinking of going in and laminating wood on top of the X brace to stiffen it. Other options would be a very light bridge, though I'm not…

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Update: Turns out it's not impossible to raise the frequencies. Removing the 35g temporary bridge raised the air resonance 2.1 hz and top monopole 2.6 hz, so a lighter bridge could help a bit. Fill…
Private member DiscussionAcoustic Repair

Oiling “ebonized” 1920’s fingerboard

I’m working on a 1920’s Regal with an ebonized fingerboard. I’ve seen these referred to as “ebonized pearwood,” but all I know is it’s worn through to a light wood, definitely much softer and grainier than maple. I want to keep the finger wear through the ebonizing, but build up a little layer of protection. Boiled linseed oil seems ideal for this. However, I’ve heard boiled linseed oil doesn’t react well with tannins. Tannins may be pa…

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Ian Davlin
You might try tru oil for this. You can actually thin tru oil with naptha/mineral spirits, so you could get it to penetrate. After a cursory glance at the internet, I cant find any mention of a simila…
Private member DiscussionFinish New Builds

UV III Systems

Has anyone had luck contacting UV III Systems? I’ve called, could not leave a message, emailed them and never heard back, tried ordering replacement bulbs today and their website had an error. Not sure where to get the specific bulbs for our UV4-XL curing light.

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Private member DiscussionAcoustic Builds

Martin-style Ambertone

Has anyone here sprayed a Martin-Style Ambertone top? Curious how you approach it color wise....seems to me the amber base coat is a very orange/red color, then a very light and warm feathered in brown

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Dark Vintage Maple in TransTint is just a stronger version (more concentrated) of ColorTone "Straw". I don't like amber or Vintage Amber for the center color. I find a better center color with 1 part…
Private member DiscussionAcoustic Repair

1950 Martin D28 with localized scary thinning.

Hey all. I've got the above-mentioned guitar on my bench. It had a neck reset and what appears to be a new bridge pad put in 14 years ago. It's a crack-free guitar except for a couple of little hairlines running from the back of the bridge to the upper tone bar. I thought that was a bit weird. Inside, everything looks okay until I turn off the inspection light, at which point I can see the rosy glow of daylight through the top - this…

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In classical woodworking theory, yes - crossgrain glue-ups are a real no-no, but we get away with it in guitarmaking all the time. We're the rebellious bad boys of woodcraft! In this case I went w…
Private member DiscussionFinish New Builds

Avant UV Coatings?

Hey all, I met the rep for Avant UV Coatings last weekend at the FB Summit. The product seems very interesting, potentially safer and relatively inexpensive to get into with curing lights starting at $250. It uses the UVA spectrum, cleans up with alcohol is HAP and VOC free (according to their info), and does not require any hazardous waste disposal. Does anyone here have any experience with this product? Thanks!

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I'm anxious to hear your results. I'm getting on a call with the rep again this week with a couple of questions but am really about to pull the trigger. He main complaint I hear online is that the fin…
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 DiscussionTools and Jigs

A place for small tools (insert joke here)

If you're like me, you've acquired lots of small luthier tools over the years from StewMac and other vendors. Having a place to store them has always been a problem for me. I stopped drinking soft drinks years ago because they're bad and I recently found out I'm diabetic so they're definitely off the menu. I swapped out soft drinks for water and Crystal Light a long time ago. In our throw away culture, single use plastics are a huge pro…

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Private member DiscussionAmps, Pickups, and Pedals

Flattening Flatwork?

I've got this Telecaster pickup (1969). The pickup works. Is it possible to flatten the top without gluing it down to the windings? Clamping lightly with a caul slotted for the magnets seats it nicely but I'm not sure how to make it stay there. Any experience with this? Suggestions?

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If it's working, you don't really want to. Plenty of people manage to cla.p down the ends and hit the pole pieces with super glue. And that can work. You run the risk of breaking the internal coil wir…
Private member DiscussionFinish Repair

Pigment Powder Kit

After watching Jeff Jewitt's Touch Up for Builders video, I began looking for a source with a selection of pigments like he has. I started by looking at Mohawk Blendal powder stains, but they only had 6 of the 12 pigment colors I was looking for. I widened my search, and exchanged e-mail with a couple of Etsy vendors. I was fortunate enough to find KonstantasShop which offers 24 pigment colors. While I suspect this collection is targete…

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Wow this is great, thank you for sharing.
Private member DiscussionCNC

Surface Inspection Light 2 - Electric boogaloo

This is a rehash of the amazing Loothprint that Mike (@member@member@member) shared to the group (Surface Inspection Light – The Looth Group). I don't have a 3D printer so had to take a low(er) tech approach. The pics should be self explanatory. I have linked to a DXF and CRV (Vectric VCarve) file in case it helps. I do most simple tooling in Aspire as I can move more quickly there than in Fusion. Components needed: .75" Baltic birch ply Flash…

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Ian Davlin
Awesome. When we get Loothcuts up. Remind me an we will repost this there.
Private member DiscussionAcoustic Repair

Strange(?) bellying on Martin 000-15 SM

Just realized that I posted this on the main feed earlier and should have posted it here. Apologies for my poor posting skills. Will go and delete the original now.... Hello all, I’m new around here and excited to continue lurking and learning, taking in all the great content and the knowledge of all you experienced looths. I am more familiar with building than repairing, but I am interested in learning all I can about both. I’m happy to…

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Yeah, I don't know. I would start by calling Customer Service. They will either direct you to a warranty operation for verification or if they let you send the pics, they might just issue a Return Aut…