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Private member DiscussionTools and Jigs

Not exactly a tool or a jig, but...

The tuner app I’ve used regularly on my smartphone for years has slowly become bloated with useless features, heavy, and totally impractical. I tried a few alternatives, but I didn't really like any of them. Since we are the kind of people who prefer to just build things ourselves when we need them, I decided to built my own tuner: completely free, ad-free, and actually effective. I even threw in some links to my social media. I think I'l…

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I haven't uploaded it to the Play Store yet. If you want to test it and know how to install unknown apps on Android, I can share the APK file on GDrive
Private member DiscussionNeck Reset Database

neck reset acoustic guitar with two necks (harp guitar)

I've owned this Jersey City made 12-string/drone 'harp' guitar for a few years and want to get on the repair. I've taken the necks off many dozens of Schmidt-made guitars but never one with two necks. I've searched the web looking for harp guitar neck removal and didn't find anything of use. Asking for any tips/aids/experience from the loothers. My plan is to make a custom neck removal jig that fits the necks, and then drill the typical…

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Private member
Beautiful guitar. Will your neck jig(s) bind the two necks together top and bottom, as well as push up equally on the heels while you release the joints? Seems like any loss of rigid coupling between…
Private member DiscussionGeneral

When taking the ends of fret tangs off how do you guarantee not to file into fret causing perceived lift when making them flush?

Hi There, I've seen a number of jigs, Some seem like they might work with specific size frets but we all know that even same sized frets have some variances depending batch and where on the line it came off the spool. No matter how i do it I seem to scrape the bottom of the fret trying to make it perfectly flush. I've considered using small rotary round burr or cylinder and only touching the tang so if it does go to deep its…

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Here we go! The UnTangler was created exactly to deal with this issue. If you look in the loothprints library there is a LITE version you can download and print yourself, or have somebody print for yo…
Private member DiscussionAcoustic Repair

Help needed to pinpoint my mistakes please!

Hi all, I am a newer guitar tech and after dozens of repairs this particular Simon & Patrick Luthier Cedar top SP6 acoustic dreadnought from the 90-ies with a bolt-on maple neck has been an incredible challenge. It came with a maxed out and stuck truss rod with a considerable up bow in the neck, extremely low saddle with barely any string break angle, so it needed a neck reset. Later on I figured out that it also has a pretty dras…

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Ian Davlin
I never got the video.
Private member DiscussionAcoustic Builds

LuthierTool Neck Angle Jig

Is anyone using the LuthierTool Neck Angle Jig. I have a quick question about setting up to cut the tenon and getting the correct angle dialed in for cutting the heel block. TIA for any help

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Private member
No, it was made by LuthierTool in Kettle Falls WA. Chris the owner recently retired. Thanks Ian
Private member DiscussionTools and Jigs

Measured drawing and assembly for Proper Variable Radius Sanding Jig

Doug Proper designed a sanding jig that supports variable concave and convex curves, described in the following Loothgroup article: https://loothgroup.com/post-imgcap/the-variable-radius-sander/ I built one and am impressed with how it facilitates preparing bridges, braces and also allows tracing any radius using the chord formula. I made a rough measured drawing and assembly guide to share, with Doug's blessing. First step, ma…

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Ian Davlin
Thank you John !
Private member DiscussionAcoustic Repair

First ebony fingerboard - any advice?

I’m about to do my first ebony fingerboard replacement and wondered if there was any advice, compared with rosewood fingerboard construction. I plan to use the small aluminum jig and fret saw to cut the slots manually, indexing off the old fingerboard. Thanks for any advice or encouragement!

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Dan, your generous advice is much appreciated. I'm all repair at this point, and have refretted a couple of dozen necks but still feel like an amateur! If you have time, can you mention which glues you…
Private member DiscussionTools and Jigs

Acrylic Centering Guide For Obrien Neck Jig?

Does anyone have a laser cutter/engraver file for the Acrylic centerline guide for the O'Brien Neck Jig? I can't find any replacement parts and was hoping to simply make my own. Its the most susceptible piece on the jig and my students can be rough on those.

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Private member
I think Greg at Skyscraper Guitars manufactures replacement parts for the LMI neck angle jig. I know he has made replacement templates in the past and upgraded them tot he new ones he puts on my jig.…
Private member DiscussionAcoustic Builds

Any helpful tips with bar frets?

Hello, One of my commissions is coming down the pike and it's going to be my first time using bar frets. I could use a once over for any helpful tips if you have any. About the guitar: Aged HD-28 but mahogany back and sides. I think Martin called this a HD-28 M? Skipping the truss-rod and using two carbon fiber strips. My process for Frets: 1: I CNC my fingerboards to a 16" radius and for T-frets I use a .023" to cut slots with a mat…

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Ian Davlin
Depending on the carbon fiber strips and the gauge of string, you're compression may be moot, or at the very least, a fairly subtle factor. I would do a lot of testing before you glue the neck on to t…
Private member DiscussionAcoustic Builds

Cutting Fret Slots

I cut the fret slots for a baritone guitar build today, so I thought I'd share my method for cutting fret slots, as I think it is a bit unusual. I radius and profile my fretboard before I cut the slots. I print out a paper layout of the fretboard, double-stick tape it to the radiused and profiled fretboard, line up the saw by eye to using red hatch marks on the printout, and saw the fret slots with a 3" circular saw that rides on…

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Private member
Awesome! Can you share how you print out the fingerboard layout?
Private member DiscussionElectric Repair

Neck Spline jig recommendations

Hey all - I've got a couple Gibson headstock repair investments that I'd like to practice inserting splines for reinforcement (or I may go the backstrap method..tbd). Do you have any jig recommendations or preferences? I've only seen the G&W option (which looks awesome), several ebay knock-offs and lots of DIY jigs. I welcome your feedback. Thanks and all the best, Chris

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Ian Davlin
I think this is my favorite. It's not my favorite technique overall, but this version, with the long splines that extend WAY past the transition of the neck is the best. https://mcconvilleguitars.blo…
Private member DiscussionAcoustic Repair

1950s Gibson LG-3

Hi, I have a 1950's Gibson LG-3 that's had some poor work done to the spruce under the area of the bridge where the spruce has pulled away and or been sanded excessively. It's missing about .020-0.30 thou of spruce and I'm wondering/looking for advice about how to go about splicing in a thin piece of spruce before I re-glue the bridge. Please see pictures attached. My main questions are: glues for the patch, should the patch be mitered…

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When faced with a similar job recently, I chose to glue the patch in place with epoxy, then used hide glue to reset the bridge. The logic being that 20 years from now when someone needs to reset the…
Private member DiscussionElectric Repair

Just one string buzz from 1-12 even with really hi action.

I work in guitar repair for over 20 years and this strange buzz happen only 3 times and i really going crazy. Five years ago a all parts strat neck in G string, change string, leveling frets twice thinking i made a mistake, in some point i made a rudimentar neck jig to tried to repair that neck. Work in that guitar for 3 weeks and string heigth like 3.5mm and yeat, buzzing with not so hard picking just the G, even in other tuning like F…

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Thanks Ian! It’s a brand new guitar, client contact the dealership and it’s in process to return and get other one. I really want to open and understand why this happened, not know why it’s a big bumm…
Private member DiscussionAcoustic Builds

How to get a perfectly square neck alignment using the LMII/O'Brien jig

I attach my necks using the LMII/O'Brien jig. No matter the method, there is no guarantee that the neck block and edge of the rim at the top is truly perpendicular to the centerline of the guitar. I’ve just flossed when things weren’t quite right. But now I take a long square, place it on the rim at the neck block and measure where the long square aligns on the top seam. I note Bass/Treble deviation at a known point (I use 290 mm).…

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Private member DiscussionAcoustic Builds

Fast set up glue jig for hide glue

I've been trying to figure out an easy to use jig that will allow me to clamp a top and back fast, so that I can use hot hide glue. No way with my spool clamp method I could ever get everything clamped in time. I thought about trying to use pneumatic cylinders with 3D printed perimeter feet, but that seemed very complicated and a lot of work to get something to attach the pneumatic cylinders to. But it kept coming back to me that usi…

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Ian Davlin
Dude. That looks pretty cool? Have you thought about making an arch with an ACME screw to just throw center pressure on it? Like a book binding press etc?