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Private member DiscussionTools and Jigs

Hackman Finland Wood Pecker chisels?

I picked up a set of these chisels a couple years ago at an estate sale. They were in a very sorry state but had clearly been used and loved. I gave them a good cleaning and sharpened just the smallest one, which took a very nice edge. I'm debating sharpening the rest in order to sell them along with my Narex chisels (which I haven't loved) and replacing them all with a couple Lie Nielsen chisels only in the sizes I really use. Anyone h…

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Hey @member the Narex chisels are ok. Out of the box they needed a good amount of sharpening and polishing, which I put off for literally years. But I finally used Rye Bear's method and got them to a…
Private member DiscussionElectric Repair

Lollar Monolith HB coil split I need help!

Gah! I need help wiring Lollar Monoliths to coil split each pup at their own 2 way mini switch...client brought it in wired to a card ( based on rough drawing ) said he "tested it"....I had to clean up his wiring and soldering some...both pots, 3-way and 2-way switches are functioning but I get a weak signal when plugged in....what am I missing here? I redrew it ( nicer drawing ) with the black hots going to the 3-way ( swapped with gre…

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I'm not seeing an actual ground going to the black leads for the pickups (unless there is an internal connection at the pickup). Try putting a jumper from the ground to the black lead at the switch.
Private member DiscussionElectric Builds

alternative to mixol?

Hey guys, does anybody know of a good alternative to mixol? I use it in lacquer for mixing opaque colors and it's great but I've been on the lookout for something more affordable and haven't had much luck. Wondering if anybody here knows of anything. Thanks!

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Ian Davlin
It used to be the colortone pigments from stewmac that were quite good and didn't require a ton of material to go to opaque. It seems like we are left with just Mixol for guitar grade pigments that wo…
Private member DiscussionElectric Repair

Les Paul (Knock Off) Wiring - Volume Pot Issue

Hi Everyone, I've got this knock off Les Paul in the shop right now and the wiring is a rats nest as you can see in the picture. Does anyone know which of the pictures from the guitar wiring bible what would apply to this guitar? The volume pot is an issue that I may just try to clean but if I do decide to tackle all of the wiring I’m curious to know which diagram I should be working with. Thanks in advance! Images

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It looks like modern wiring. Personally, I tend to prefer doing modern wiring, no real reason why. Regardless, it will be easier and better to start from scratch then to try and make this mess work.
Private member DiscussionCAD/CAM

Contriver Node Atlas

A visual dependency map for Autodesk Fusion. It turns complex Fusion designs into an interactive map of model logic, helping users understand how parameters, sketches, construction references, features, bodies, and other design elements relate to each other. Instead of digging through dense timelines, browser trees, and feature chains, Node Atlas gives users a readable graph of how a design is connected. It is built for designers, builder…

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Private member DiscussionTools and Jigs

Hide Glue Pot

Does anyone have a good glue pot they can recommend. I'm planning to try some hide glue work. Regards, Gerry

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I made this 3d printed top for a wax pot a long time ago, I think the links are there. I highly recommend keeping the glue in squeeze bottles, it keeps the glue uncomfortably hot all the way to the i…
Private member DiscussionAcoustic Repair

54' SJ-200 Bridge replacement....

Well, I have exhausted all the internet can offer for options for a replacement bridge. The customer, long ago, removed a ton of material from the bottom(!!!!) of the bridge, and now that ive taken this guitar on as a restoration, its up to me to make a new bridge. I have found some ultra small pattern bits, and round-over bits to do the inside of the mustache flush, but I can not for the life of me decided how im going to cut the bulk…

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Hey Jonathan, PM me. I have a moustache model (even though I don't particularly care for them!) and I might be able to help you out. I'll need the desired material for the bridge, X, Y, and desired…
Private member DiscussionCustomer Relations

What do you do when you get a knock off guitar on your bench?

I have a "fender", which I believe is a knock off, in my shop. I didn't immediately catch that it was a fake, but as I worked on it it's become fairly undeniable, in my opinion. For the neck — the fretboard is made from two pieces of rosewood, the headstock decal doesn't look right, the truss rod is metric, the tuners don't look like a MIA Fender, and there's no walnut plug on the truss access. The model name being wrong is suspicio…

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Ian Davlin
My opinion is to avoid mission creep. Repairing instruments and authenticating instruments are two different jobs. Only one of these jobs are you actually being paid for. I've never experienced any up…
Private member DiscussionAcoustic Repair

Repairing small instruments

Im 6'-6" with hands to match. I can squeeze my hands into most flattops, but a friend asked me to look at his 1930's Tiple. It has multiple back cracks that I can get to with props and TJ's crack system, but there are also plenty of loose braces. Looks like I've got to pop the back off, but I feel the long back cracks should be stabilized first. Would you hesitate removing the back? or is there a way to address the loose braces from out…

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Ian Davlin
Those are pretty small, but I think you can get those glued with sound hole clamps. I would at least try it before taking the back off. Take all the hardware off a sound hole clamp and flip one of the…
Private member DiscussionAcoustic Repair

Yamaha System 19 pre-amp in an LD-10E guitar

Hi Folks Newbie here so please bear with me. I have a lovely early 90's Yamaha LD-10E acoustic in for repair, I think all solid wood? made in Indonesia and a lovely sounding instrument, however the electrics are letting it down. The pre-amp has a PCB populated with SMD electrolytic caps. Many of these have leaked and destroyed the PCB pads underneath. Repairing the traces is nigh on impossible so it looks like I'll have to replace t…

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Can you put up some pics?
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…

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thank you. yes the saddlematic info was valuable!
Private member DiscussionSELL! SELL! SELL!

Fret press for sale

I bought the StewMac fret jaws and am hoping to sell the heavy press. I can't imagine shipping it but if you're in Northwest Alabama come by and buy this from me. Buddy Guy is playing here at the end of the month and we have Jason Isbel and the Drive By Truckers playing here for Shoals Fest some time this summer.

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More pics
Private member DiscussionDesign and Testing

AI hallucinations-Claude fessing up

I am working on an article to post here on the Looth Group regarding the history, and problems, with scale temperament. In the process, I asked Claude about a particular point, and Claude gave me a quote that perfectly encapsulated the concept I was exploring. I asked Claude to provide the specific citation for the quote. Claude fessed up to outright misrepresentation. Probably nothing new here, but I thought it was worth sharing.…

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There's a really cool book, not specifically about intonation but dives deeply into it, called Harmonic Experience by W.A Mathieu. Highly recommended. Cheapish used.
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…

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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 DiscussionFinish Repair

Varnish Repair - Cracking/Flaking alon edges

I'll open by saying I know nothing about varnish finishes, yet. I've seen this Brentrup mandolin with a varnish finish that has extensive lifting/flaking around almost all edges. Is there a process/chemical for consolidating varnish finish like this? (beyond the brute force GluBoost wicking I might usually do) In any of the violin video sessions, has this type of finish repair been discussed?

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I knew Hans. At the time I met him (around 2016) he was spraying spirit varnish pre-made from International Violin. His mandolins ended up with slight checking a year or so later, but I had not see…
Private member DiscussionNeck Reset Database

L Viohl's Empire State 20's?

A new one for me... joint is pretty much centered between 12th and 13th.

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The bolt is a more recent addition...