The Hub

The latest builds, repairs, and conversations from across Looth. Activity
Filters AND Tag #councilyes× In Perspective× In Tools, Spaces & Robots× In Repair & Restoration× Reset all
Private member DiscussionAcoustic Repair

acoustic guitar body repair

good evening to all. This one showed up on the marketplace. I'm wondering if its too much to chew for me at this time. Is it a very difficult repair? Is it worthwhile pursuing? It's another $25 crash test dummy. Please, don't hold back. I can take it.

4 replies
4 replies
LikeShare
Private member
If you can push the crushed bit out and it looks level with the surrounding surface you are in good shape. If not, you can (carefully) force the issue with a tool like this: https://loothgroup.com/loo…
Private member DiscussionShop Organisation

Physical management of work-in-process instruments

A growing work flow in a small shop means I have in-process guitars stacked all over my work surfaces. I need to protect them and keep all the pieces together but also to have them readily accessible, and cases are less than ideal for that. Never mind the caseless guitars. I'd be grateful for advice on containers/stacking/shelves to protect and organize the growing mess. Thanks!

5 replies
5 replies
LikeShare
Private member
If you have the room to go 48 inches deep, this was our solution. Stores lots of projects and all the drawers slide out. Just like at the morgue.😉🙃 Of course you don't have to make it as tall as we d…
Private member DiscussionFinish Repair

'60's Fender Newporter matte finish repair

I working through a long top crack repair on a c.1964 Fender Newporter and need to do a little touch-up on the clear coat. The top coat is matte over a do-do brown stained mahogany top, I'm guessing around a 10-20% reflectivity. Questions: 1. What top coat product did Fender use on these? 2. What should I use that has great self-leveling qualities and will melt into the old finish? <>

3 replies
3 replies
LikeShare
Private member
I've decided to follow your wisdom, Ian, and it leave the finish cracks alone. It will be structurally sound again and look like it used to have a crack.

GlueBoost vs Nitro drop fill

*Photo added* Ding repair on spruce top, 2015 Collings 0002HE #23701. What are y’all reaching for when repairing dents in nitro? GlueBoost fill & finish or drop filling with nitrocellulose? This is a well-used guitar; not pristine and the owner has reasonable expectations that the repair will not be “like it never happened” Bonus question: If there is bare wood, should I seal it with shellac to preserve the color before proceeding to fil…

13 replies
13 replies
LikeShare
Private member
The coating on that 000 is a mixture of a UV poly base and nitro top coats. It seems that many of the deeper spots could benefit from steam applications. I use a paper towel, folded into four layers a…
Private member DiscussionGeneral

70's Tele Neck w/ truss rod issues and a bulge behind first fret

I've got a client with a '72 Tele. It needs a re-fret, but the truss rod isn't functioning. In fact it's backed out of the channel significantly, and there's a bulge in the neck underneath the first fret which suggests to me there's something going on with the truss rod anchor. The puzzling thing is the wood in the neck has bulged, but the skunk stripe and the finish don't appear to be disturbed at all. I'm thinking I'll probably hav…

7 replies
7 replies
LikeShare
Private member
The only other potential thought I have outside of maestro's James and Ian is, while it's hard to know via photos; has the neck been refinished? I'm seeing some sheen in the worn areas which I wouldn…
Private member DiscussionNeck Reset Database

Spanish Heel failure

Hi all, I got a Do Santos DSMSCC RC in shop, the Spanish heel has failed , or rather collapsed into the soundboard, splitting it on both sides along the grain, a broken brace just under the fingerboard extension , cracks on both sides on the top/side bindings, I measured wood humidity on the fingerboard 9% and inside the (very inaccessible) body 11% The normal procedure would be to re-humidify before jacking or clamping back into place ,…

11 replies
11 replies
LikeShare
Private member
@member More Picture of the Decapitation ...
Private member DiscussionAcoustic Repair

Splines: When are they necessary?

Question about splines: At what point are they necessary? My question is primarily regarding the crack to the left between the bridge and the sound hole as well as the crack at the upper bout that runs along the fingerboard extension. I have already glued them both and used the TJ cleats that run the full length of the cracks. I have already splined the lower bout crack that runs from the bridge to the binding as it was super gappy and d…

1 reply
1 reply
LikeShare
Private member DiscussionAcoustic Repair

Bending purfling- need advice

First time making purfling to match a repair. Problem: couldn’t get it to bend without delaminating and cracking. Veneer is 6 plies using 4 of SMs 0.023” and 2 maple at 0.025” cut to 1 1?2 inches wide. Glue up with Titebond Veneer glue, final stack at 0.140” thick. Let it dry 2 days, cut a few 0.090” strips, then used some super soft just at the waist and despite going very slowly the strip skewed, delaminated and started to break plies. W…

9 replies
9 replies
LikeShare
Private member
I've never used titebond veneer glue before. But when I make purfling, I use a polyurethane glue, like gorilla glue (activated by moisture), so I can use steam to bend the purfling to the shape I need…
Private member DiscussionAcoustic Repair

Retopping a ladder braced Stella - dimensional questions

I am repairing a damaged Stella parlor guitar. The original top was birch, plain sawn at 0.100 inches thick, ladder braced with multiple beefy braces and irreparably split, warped and generally separated from the sides. I want to keep the instrument ladder braced with a movable bridge and upgraded tailpiece, all firsts for me. I would be grateful for input on 2 issues. 1. The new top is Adirondack spruce that I’ve reduced to about 0.110…

4 replies
4 replies
LikeShare
Private member
I don't have much to add but I am working on the exact same guitar at the moment and had a question. How did you get the neck off? I'm doing one of my first few neck removals on this and it isn't seem…
Private member DiscussionAcoustic Repair

Gibson MK-72 Body Damage

All - looking for recommendations on overall approach for repairing this nasty side crack right at the edge of the tail block. My initial thought is that either the top or the back needs to come off in order to properly glue and clamp the main split. Thanks in advance. Images

7 replies
7 replies
LikeShare
Ian Davlin
I use a file or a sanding block. I fit the new side by pulling sandpaper (like on a neck reset) to start and then finish with a little bit of chalk and futzing. You could pull the tailblock inlay and…
Private member DiscussionNeck Reset Database

Washburn Neck Reset

I am working on a neck reset on a Washburn Parlor - SN 283552. I have read that the 28 in the SN indicates that is was built in 1928, but the owner thinks based on her research that it was built before 1920. I am assuming a dovetail joint and that I can get into the neck joint for steaming by drilling into the 13th fret slot, but if anyone knows differently please let me know. The fingerboard extension has already separated slightly…

8 replies
8 replies
LikeShare
Ian Davlin
Love the truss rod let in to the top!
Private member DiscussionTools and Jigs

Tool for shaving back braces

I am retopping a guitar and while it's open I want to reduce the mass of the back braces. Since the sides are in the way, I can't figure out how to cleanly cut the excess brace wood away; anything I've tried involves the handle hitting the sides and preventing a controlled, clean cut. Is there a tool - say a "pull finger plane" - that I can pull from the edge to the middle of each brace to facilitate this?

6 replies
6 replies
LikeShare
Private member
My problem in this parlor guitar is that any chisel I currently have is too long and I can’t address the middle third of the brace without coming in at such an angle that I can’t control the chisel pr…
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…

21 replies
21 replies
LikeShare
Ian Davlin
I never got the video.
Private member DiscussionAcoustic Repair

Intonation: Ive never seen this

I'm restoring an old parlor guitar. I have just discovered that it plays 20 cents sharp. Thats not in and of itself a mystery, usually. This guitar however has exactly the same distance from the nut to the 12th fret, and from the 12th fret to the "saddle" which is now a small shim under the two E strings both are 12 3/32"...with room in front of the bridge pins to finesse the location of the saddle slot, which I have not routed yet) I s…

4 replies
4 replies
LikeShare
Private member
thank you. yes the saddlematic info was valuable!
Private member DiscussionElectric Repair

Epiphone Emperor Ski Jump Extension

I have a Kalamazoo made epiphone with the most extreme fingerboard ramp I have seen. I have the neck dead straight from 1st fret to body joint and get a 1/16 of gap when I run a straight edge from 1st fret to the last fret. The frets average .040" but someone leveled the extension and those frets are half the height. Does anyone have any suggestions for flattening the extension. Clamping a block on it? If I level the board during a r…

4 replies
4 replies
LikeShare
Private member
I found a pic which helped me see the situation. I think what I was mentioning before would work well. It looks like it would be easy to separate the short length of the fingerboard from the extensio…
Private member DiscussionShop Organisation

How do you all keep track of your builds/repairs?

Hey all. I apologize if this type of post isn't allowed here but wanted to share anyway. I've been building a tool called Looth specifically for luthiers and repair techs, and I'm looking for a small group of interested looths to help shape it a bit more before it goes public. I got tired of managing spreadsheets and decided that it could be simpler and more automated. The core idea is simple: one place to track every build…

1 reply
1 reply
LikeShare
Private member
I've got some great feedback on this app so far. Anyone else using something similar or different? What is working for your shop?
Private member DiscussionFinish Repair

Supertone with ? overspray - need advice on how to refinish

I am restoring an old Supertone with a thickened and heavily alligatored finish. The finish softens quickly with acetone, and it looks like it has had an overspray. I would like to keep the staining on the oak back and sides, and to preserve the decal on the headstock. The top I would like to strip and sand. The questions are: 1. What more do I need to know about the finish? 2. How should I remove the finish or at least thin/smooth…

12 replies
12 replies
LikeShare
Ian Davlin
I don’t see much evidence of overspray. The headstock looks to be in decent shape. I’d just leave it unless the finish is actively falling off. One thing you might try on the top before refin is Mohaw…
Private member DiscussionAcoustic Repair

Damaged top repair under failed bridge glue-up

I had a bridge replacement in which the top surface (laminate) had been badly damaged during a prior repair. The first picture shows the extent of the tear out, including one large area and many smaller defects in the top layer. The surface was cleaned of all the old glue and primed with dilute hide glue. A piece of poplar veneer was glued in the largest defect and a hot slurry of hide glue and fine poplar dust was spread across the res…

1 reply
1 reply
LikeShare
Ian Davlin
01:02:30 Q5. Bridge Reglue on a Damaged Laminate Top @member your video sir.