The Hub

Hi all, I'd like to get some input on how to address this top blowout. For starters I own this, I got it as a project guitar, 71 D28. I'm not as experienced with acoustics as electrics and this is a big project but I got it to learn new skills and I'm confident I can do it with guidance. It had been stored in the case for many years under tension and was way too humidified. The bridge had pulled up I assume in stages. The center seam se…

Hi All, I wanted to check in with folks in the industry and ask for some advice. I have been on a building Hiatus for a number of years now (Hand Injury, Medical Issues). Things have gotten much better, and I am fully able and capable of building once again. The 2nd biggest hurdle I have had was a lack of opportunity for shop spaces to build. I now have a viable workspace and full use of my hands once again to build. The problem is that, o…

Greetings Wise Elders and fellow seekers of the Looth Group! I hope you're all keeping well. I humbly beseech thee for thine sage wisdom and experience. I purchased a 1971 Hagstrom Swede. This guitar was basically put in a case and then forgotten about for a few decades. I felt sorry for the old man and have taken it in as a stray / project. I would like to get it playing again. There are many scars on this guitar, I have looked for as…

Hey folks! I picked up a neck relief gauge from Doug in one of the earlier batches, maybe the introductory run? Some of the small feet caps that thread onto the moving legs of the tool have cracked, broken, or become worn down. I contacted StewMac about purchasing replacement parts, but they don't sell subparts for the relief gauge and otherwise won't help me. They appear 3D printed, so I was wondering if anyone with the means to print s…

Hi all. I've just joined the group....I'm pretty certain what I'm asking here has already been covered somewhere but not really sure at the moment how to search chat topics. If so, and it's easier to just point me to an older chat...please do so! I'm in my 50s, been playing guitar for as long as I can remember. I'm a trained wood-worker (amongst other things) and am looking to start a new journey into guitar repairs. At my age I can't a…

I've built a number of classical guitars with an adjustable neck and they seem to gather quite a bit of interest, so i'm currently in the process of looking to refine the design and build. It's quite a simple construction where the neck is held together by string tension and hangs on a pivot. I developed a 3d printed "socket" which acts as the interface between the body and the guitar and allows for some fine tuning of the alignment of t…

A customer brought in a Gibson ivory top A3 mandolin. It's in good shape and has all the parts. He found it at the local thrift store here in Bishop. He wants it mechanically sound. Here are the problems: 1) Everything that comes into the shop has a shrinkage component and the effects of course very from instrument to instrument. This instrument is no exception and the results of that shrinkage, in this case, are severe. The top, ba…

So it seems that a drum sander would be very handy for many parts of a "build from scratch". There are a few out there that cost under $3000.00 that can handle wood up to 4" thick and are wide enough to sand a back or top after the halves have been joined. Jet JWD-22-44 open stand, 22"width Jet JWDS-2550 open stand, 25" width SuperMax 19-38 opend stand, 19" width SuperMas 25-50 closed stand, 25" width Questions: Any recomendations on the sa…

(for background context, I'm probably in the dozens of fret jobs so far, and no I don't let frets leave my house like this) When I got started getting interested in building guitars, I got the StewMac bundle of fret files/book, which comes with the concave toothed file. Over time, I ended up getting both the Narrow/Medium and Wide/Jumbo files. I don't do it often, but occasionally I do something like shown in the picture, where I'm clearl…

Since most of us fix or make guitars, we have probably heard something about the cease and desist letters Fender has sent out concerning the Stratocaster. I thought I would offer some thoughts. As always, caveat emptor. There are three basic ways to protect intellectual property under Federal law. Patent, trademark, and copyright. Each protects different things, and has different underlying legal theories. Lets begin with pate…

Rask Guitars — Utah (relocation required) Rask Guitars is a Utah-based custom shop dedicated to building exceptional instruments — primarily high-end acoustics, alongside electric guitars and prototypes. We operate with a small, focused team where craftsmanship isn't just a standard, it's the entire point. We're growing, and we're looking for a skilled, experienced luthier who's ready to plug into a real production environment, contribute…

Hey everyone, I'm a technician at a music production school in London. As the most 'guitariest' technician on staff, I've become the de facto guitar maintenance person. A big part of my work is taking a look at each guitar once a week. Usually my "routine" is to check action and intonation, making adjustments if needed, then cleaning/polishing. The thing I struggle with the most is getting strings feeling good. We use D'Addario…

Greetings fellow Looths! I recently received a request from a customer to replicate Kurt Cobains 59 Martin, starting with a Sigma DM3. I have pasted the customers email to me below. While I have been a looth hobbyist for many years, I just recently opened my official business, Finger Lakes Guitar Works, and am just getting off the ground and a good flow of repair work is already coming in. While I feel 100% confident in my abilities to…

I’ve been speed modelling parts with the printer running 24/7 since inception. There are currently somewhere around 75-100 individual pieces modelled in my source file. Mostly only building on what I’m considering the X axis, but it’s Freeform so I’ve used them to build out Y.. anyways… Connectors, Extenders, Couplers, Links, Sleeves, Feets, Plugs, Panels, Hooks… and on and on. In a moments time, I will have a mass drop folder of Standar…

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…

Hi everyone, I'm Martino from Hub of Acoustics, a collaborative project created by luthiers for luthiers. Our goal is to explore and teach acoustic principles that are directly relevant to instrument making. In 2026, we’ll be running four courses in different parts of the world, all focused on giving luthiers practical tools to better understand and control the acoustics of their instruments. We’re excited to introduce our very…

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.

Hi all, I'm new here. I've been playing guitars for ~15 years and recently started as a technician at a music production school in London, where part of my job is maintaining the guitars. I picked up this 50s parlor nylon the other day and it's in bad shape but I don't know how to go about repairing it. The main issue is the bridge. The guitar was kept high strung and the bridge has twisted and lifted off slightly at the base. T…