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Private member DiscussionAcoustic Repair

Local Thrift Shop Find: Gibson Ivory Top A3 Mandolin

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…

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Ian Davlin
@member Man, sorry for the late reply. I would just keep on taking this mandolin apart until you meet serious resistance. I'd build a mold and just trim it until it fits and…
Private member DiscussionNeck Reset Database

1965 Stella

This guitar appears to have been assembled with urea formaldehyde glue, which is insoluble in water and doesn’t melt at any reasonable temperature. It is definitely not hide glue or resorcinol.The neck pocket is not under a fret slot. Luckily, very little glue was used to assemble the neck and it was all on the cheeks of the tenon and the neck came off rather easily using a combination of the StewMac heat rod and foam cutters, with smal…

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Private member DiscussionDesign and Testing

Incoherence between CAD and test-piece

Good morning everyone, I was taking some measurement on production necks with scarf-joint (13° headstock angle) to add some machining process with the cnc. I so recreated the standard neck blank feature (100mm wide and 20mm thick), then drawed the 13° angle. Everything correspond the to the real piace but two measurement: the startingcut behind the break angle is ''off'' by 20mm +/- as well as the cut on the bottom, still off by 20mm…

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Is it possible that the angle of the scarf joint is different from the angle of the headstock on the real piece? Could be a manufacturing quirk
Private member DiscussionFinish Repair

triage neck on LP copy

This is an LP copy from Memphis guitars. It looks like it has had the headstock repaired at some point. Also, there is what looks like some separation of the fretboard near the nut. I don't know if its left over from the repair or if its something new and just trying to go this way. I'm asking the group to look at the pics to help me figure out if any corrective steps are needed. Also from a finish repair standpoint, how to deal with i…

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Ian Davlin
This is a good entry level job. Are you able to flex that crack open in such a way as to get glue in there ?
Private member DiscussionAcoustic Builds

Nominal Normal Thickness of Barb Thickness for a .022” Tang Wire?

Let me start with this; I'm trying to find the root cause of difficult fret wire installation of two different SM fret wires. I've spent a lot of time gathering dimensions and experimenting with techniques wich could cause the problem. I enlisted the help of a colleague who arrived at a similar poor performance. His solution was to glue the fret ends/ beat the frets in. My "rather" is to find the root cause so I don't have to go thr…

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Matching the fretwire to the fret slots (and visa-versa) is a huge subject. Dan and I did an entire episode of the Dan and Doug Show just on fret slots. I'll be revisiting the subject of fretwork in…
Private member DiscussionGeneral

Heating Pad (or other) Recommendation for Backbow?

Have an electric archtop that has a .012" backbow strung with 12-48s with truss rod completely loosened. 3 piece maple neck with a Ziricote fingerboard... Any tips or recommendations to straighten this neck would be appreciated... Currently trying humidity (in the case). Thank you! David O'

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Private member
Hi Tom and John. We're trying to slip the glue joint and heat the lignin in the fingerboard. Lignin is a natural glue in wood that holds the cell structure together and acts much like glue we use and w…
Private member DiscussionGeneral Business

Fender, Schmender

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…

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There is also a time limit to both Patents and Copyright (and Trademarks, though Trademarks can be renewed). Don't know how long they last in other countries, but Canada is normally 20 years. Copy…
Private member DiscussionJob Postings

Full-time Luthier Position @ Austin Straight Frets

Straight Frets in Austin has an excellent full-time position opening up soon. The job pays by the job, and equates to $70-85K a year for a tech that does: *neck resets *structural repairs *bridge making/reglues *refrets *headstock breaks with splines/airbrush We work on about 1,350 guitars a year (about 28-30 a week) and have had work shipped in from 22 different states at this point. We also teach setup classes on…

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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…

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Ian Davlin
Love the truss rod let in to the top!
Private member DiscussionGeneral

Epoxy glue

Good morning everyone, it is been a while since I wanted to replace my glue (standard Titebond) with epoxy. The best I can find in EU, and specifically in Italy, is the West System 105 with 206 hardeners. Is it any good for fretboard and top gluing or neck gluing? For all the other small task, like top jointing etc I'll still use Titebond or polyurethane glue. Thanks!

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I mostly build flat tops and the occasional archtop. I use titebond to join tops and backs and have used the superbond to glue cocobolo in the past. I would have no objection to using the superbond…
Private member DiscussionFinish New Builds

Sanding methods/mechanism routine

Good evening folks, lately I'm experiencing some sanding methods/mechanism frustration. Can't explain better than look like I'm regressing at doing it. The only thing changed in my building routine is that I'm currently using a CNC (I haven't used one for some years) for both bodies and necks. I have no problems with necks, but sanding bodies has become incredibly frustrating, specially around the edges. While I keep improving my c…

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Private member DiscussionAcoustic Repair

Confounding Refret....

Well, I am pulling my hair out here... just did a compression fret job on a 2017 D18 Authentic 1939. Neck had severe excess relief, so I pulled the frets, planed the board flat, and got to work....done this a handfull of times, so I wasnt expecting anything out of the ordinary...... I got a handful of frets in, checked my relief by stringing up the guitar, and decided I need to keep pushing, so I got a full set of frets in and som…

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Private member
Hi Jonathan, I can feel the frustration in your original question posted. We've all had guitars that were uncooperative on our benches and it can be exasperating.Unless I mis-read your original pos…
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
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Ian Davlin
I never got the video.